repo_id stringlengths 22 103 | file_path stringlengths 41 147 | content stringlengths 181 193k | __index_level_0__ int64 0 0 |
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data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/44/index.md | ---
title: Firefox 44 for developers
slug: Mozilla/Firefox/Releases/44
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
[To test the latest developer features of Firefox, install Firefox Developer Edition](https://www.mozilla.org/firefox/developer/)Firefox 44 was released on January 26, 2016. This article list... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/101/index.md | ---
title: Firefox 101 for developers
slug: Mozilla/Firefox/Releases/101
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 101 that will affect developers. Firefox 101 was released on May 31, 2022.
## Changes for web developers
### HTML
No notabl... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/98/index.md | ---
title: Firefox 98 for developers
slug: Mozilla/Firefox/Releases/98
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 98 that affect developers. Firefox 98 was released on March 8, 2022.
## Changes for web developers
### HTML
- The HTML {{HTML... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/34/index.md | ---
title: Firefox 34 for developers
slug: Mozilla/Firefox/Releases/34
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 34 was released on December 1st, 2014. This article lists key changes that are useful not only for web developers, but also Firefox and Gecko developers as well as add-on developers.
... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/113/index.md | ---
title: Firefox 113 for developers
slug: Mozilla/Firefox/Releases/113
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 113 that affect developers. Firefox 113 was released on May 09, 2023.
## Changes for web developers
### HTML
No notable cha... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/20/index.md | ---
title: Firefox 20 for developers
slug: Mozilla/Firefox/Releases/20
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 20 was released on April, 2nd 2013. This article provides information about the changes in this release that will affect developers.
## Changes for Web developers
### HTML
- Suppor... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/6/index.md | ---
title: Firefox 6 for developers
slug: Mozilla/Firefox/Releases/6
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 6, based on Gecko 6.0, was released on August 16, 2011. This article provides links to information about the changes that affect developers in this release.
## Changes for web develope... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/6 | data/mdn-content/files/en-us/mozilla/firefox/releases/6/updating_add-ons/index.md | ---
title: Updating add-ons for Firefox 6
slug: Mozilla/Firefox/Releases/6/Updating_add-ons
page-type: guide
---
{{FirefoxSidebar}}
This article provides an overview of the changes you may need to make to your add-ons in order for them to work properly in Firefox 6. You can find a complete list of developer-related c... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/122/index.md | ---
title: Firefox 122 for developers
slug: Mozilla/Firefox/Releases/122
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 122 that affect developers. Firefox 122 was released on [January 23, 2024](https://whattrainisitnow.com/release/?version=122).... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/49/index.md | ---
title: Firefox 49 for developers
slug: Mozilla/Firefox/Releases/49
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
[To test the latest developer features of Firefox, install Firefox Developer Edition](https://www.mozilla.org/firefox/developer/) Firefox 49 was released on September 20, 2016. This article l... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/59/index.md | ---
title: Firefox 59 for developers
slug: Mozilla/Firefox/Releases/59
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 59 that will affect developers. Firefox 59 was released on March 13, 2018.
## Changes for web developers
### Developer tools
... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/29/index.md | ---
title: Firefox 29 for developers
slug: Mozilla/Firefox/Releases/29
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 29 was released on April 29, 2014. This article lists key changes that are useful not only for web developers, but also Firefox and Gecko developers as well as add-on developers.
## ... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/106/index.md | ---
title: Firefox 106 for developers
slug: Mozilla/Firefox/Releases/106
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 106 that will affect developers. Firefox 106 was released on October 18, 2022.
## Changes for web developers
### HTML
- The... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/42/index.md | ---
title: Firefox 42 for developers
slug: Mozilla/Firefox/Releases/42
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
[To test the latest developer features of Firefox, install Firefox Developer Edition](https://www.mozilla.org/firefox/developer/) Firefox 42 was released on November 3, 2015. This article lis... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/118/index.md | ---
title: Firefox 118 for developers
slug: Mozilla/Firefox/Releases/118
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 118 that affect developers. Firefox 118 was released on September 26, 2023.
## Changes for web developers
### HTML
- The {{... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/75/index.md | ---
title: Firefox 75 for developers
slug: Mozilla/Firefox/Releases/75
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 75 that will affect developers. Firefox 75 was released on April 7, 2020.
**See also the accompanying hacks post — [Firefox 75:... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/38/index.md | ---
title: Firefox 38 for developers
slug: Mozilla/Firefox/Releases/38
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 38 was released on May 12th, 2015. This article lists key changes that are useful not only for web developers, but also Firefox and Gecko developers as well as add-on developers.
## ... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/3.6/index.md | ---
title: Firefox 3.6 for developers
slug: Mozilla/Firefox/Releases/3.6
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
[Firefox 3.6](https://www.mozilla.org/firefox/) offers support for new and developing web standards, increased performance, and an overall better experience for web users and developers. Th... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/3.6 | data/mdn-content/files/en-us/mozilla/firefox/releases/3.6/interfaces_moved/index.md | ---
title: Interfaces moved in Firefox 3.6
slug: Mozilla/Firefox/Releases/3.6/Interfaces_moved
page-type: guide
---
{{FirefoxSidebar}}
These interfaces were moved to new locations in the tree in Gecko 1.9.2.
This is generally only interesting to people doing development on Mozilla itself.
## Moved DOM interfaces
Th... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/3.6 | data/mdn-content/files/en-us/mozilla/firefox/releases/3.6/updating_plug-ins/index.md | ---
title: Updating plug-ins for Firefox 3.6
slug: Mozilla/Firefox/Releases/3.6/Updating_plug-ins
page-type: guide
---
{{FirefoxSidebar}}
Several changes were made in Gecko 1.9.2 that may impact plug-in developers in particular. This article provides a list of those changes.
## Interface changes
The `nsIPluginInsta... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/3.6 | data/mdn-content/files/en-us/mozilla/firefox/releases/3.6/updating_extensions/index.md | ---
title: Updating extensions for Firefox 3.6
slug: Mozilla/Firefox/Releases/3.6/Updating_extensions
page-type: guide
---
{{FirefoxSidebar}}
This article provides helpful information to extension developers trying to update their extensions to work properly in Firefox 3.6.
## User interface changes
[Right-clicking... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/3.6 | data/mdn-content/files/en-us/mozilla/firefox/releases/3.6/updating_themes/index.md | ---
title: Updating themes for Firefox 3.6
slug: Mozilla/Firefox/Releases/3.6/Updating_themes
page-type: guide
---
{{FirefoxSidebar}}
This article intends to help theme authors update Firefox-3.5-compatible themes for Firefox 3.6 compatibility.
## Chrome registration change
[`contents.rdf` is not supported anymore]... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/39/index.md | ---
title: Firefox 39 for developers
slug: Mozilla/Firefox/Releases/39
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 39 was released on July 2, 2015. This article lists key changes that are useful not only for web developers, but also Firefox and Gecko developers as well as add-on developers.
## Ch... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/116/index.md | ---
title: Firefox 116 for developers
slug: Mozilla/Firefox/Releases/116
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 116 that affect developers. Firefox 116 was released on August 01, 2023.
## Changes for web developers
### HTML
- The [`dir... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/28/index.md | ---
title: Firefox 28 for developers
slug: Mozilla/Firefox/Releases/28
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 28 was released on March 18, 2014. This article lists key changes that are useful not only for web developers, but also Firefox and Gecko developers as well as add-on developers.
## ... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/33/index.md | ---
title: Firefox 33 for developers
slug: Mozilla/Firefox/Releases/33
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 33 was released on October 14, 2014. This article lists key changes that are useful not only for web developers, but also Firefox and Gecko developers as well as add-on developers.
#... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/120/index.md | ---
title: Firefox 120 for developers
slug: Mozilla/Firefox/Releases/120
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 120 that affect developers. Firefox 120 was released on [November 21, 2023](https://whattrainisitnow.com/release/?version=120)... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/107/index.md | ---
title: Firefox 107 for developers
slug: Mozilla/Firefox/Releases/107
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 107 that will affect developers. Firefox 107 was released on November 15, 2022.
## Changes for web developers
### HTML
No n... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/112/index.md | ---
title: Firefox 112 for developers
slug: Mozilla/Firefox/Releases/112
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 112 that affect developers. Firefox 112 was released on April 11, 2023.
## Changes for web developers
### HTML
- The {{domx... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/81/index.md | ---
title: Firefox 81 for developers
slug: Mozilla/Firefox/Releases/81
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 81 that will affect developers. Firefox 81 was released on September 22, 2020.
## Changes for web developers
### Developer Too... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/71/index.md | ---
title: Firefox 71 for Developers
slug: Mozilla/Firefox/Releases/71
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 71 that will affect developers. Firefox 71 was released on December 3, 2019.
## Changes for web developers
### Developer tools... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/123/index.md | ---
title: Firefox 123 for developers
slug: Mozilla/Firefox/Releases/123
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 123 that affect developers. Firefox 123 was released on [February 20, 2024](https://whattrainisitnow.com/release/?version=123)... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/48/index.md | ---
title: Firefox 48 for developers
slug: Mozilla/Firefox/Releases/48
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
[To test the latest developer features of Firefox, install Firefox Developer Edition](https://www.mozilla.org/firefox/developer/) Firefox 48 was released on August 2, 2016. This article lists... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/21/index.md | ---
title: Firefox 21 for developers
slug: Mozilla/Firefox/Releases/21
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 21 was released on May 14, 2013. This article lists key changes that are useful not only for web developers, but also Firefox and Gecko developers as well as add-on developers.
## Ch... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/37/index.md | ---
title: Firefox 37 for developers
slug: Mozilla/Firefox/Releases/37
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 37 was released on March 31st, 2015. This article lists key changes that are useful not only for web developers, but also Firefox and Gecko developers as well as add-on developers.
#... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/82/index.md | ---
title: Firefox 82 for developers
slug: Mozilla/Firefox/Releases/82
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 82 that will affect developers. Firefox 82 was released on October 20, 2020.
> **Note:** See also [Coming through with Firefox ... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/92/index.md | ---
title: Firefox 92 for developers
slug: Mozilla/Firefox/Releases/92
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 92 that will affect developers. Firefox 92 was released on September 7, 2021.
> **Note:** See also [Time for a review of Firefo... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/89/index.md | ---
title: Firefox 89 for developers
slug: Mozilla/Firefox/Releases/89
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 89 that will affect developers. Firefox 89 was released on June 1, 2021.
> **Note:** See also [Looking fine with Firefox 89](ht... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/69/index.md | ---
title: Firefox 69 for developers
slug: Mozilla/Firefox/Releases/69
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 69 that will affect developers. Firefox 69 was released on September 3, 2019.
## Changes for web developers
### Developer tool... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/121/index.md | ---
title: Firefox 121 for developers
slug: Mozilla/Firefox/Releases/121
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 121 that affect developers. Firefox 121 was released on [December 19, 2023](https://whattrainisitnow.com/release/?version=121)... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/15/index.md | ---
title: Firefox 15 for developers
slug: Mozilla/Firefox/Releases/15
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 15 shipped on August 28, 2012. This article lists key changes that are useful for not only Web developers to know about, but also Firefox and Gecko developers as well as add-on develo... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/119/index.md | ---
title: Firefox 119 for developers
slug: Mozilla/Firefox/Releases/119
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 119 that affect developers. Firefox 119 was released on October 24, 2023.
## Changes for web developers
### HTML
#### Remov... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/41/index.md | ---
title: Firefox 41 for developers
slug: Mozilla/Firefox/Releases/41
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
[To test the latest developer features of Firefox, install Firefox Developer Edition](https://www.mozilla.org/firefox/developer/) Firefox 41 was released on September 22, 2015. This article l... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/26/index.md | ---
title: Firefox 26 for developers
slug: Mozilla/Firefox/Releases/26
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 26 was released on December 10, 2013. This article lists key changes that are useful not only for web developers, but also Firefox and Gecko developers as well as add-on developers.
... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/124/index.md | ---
title: Firefox 124 for developers
slug: Mozilla/Firefox/Releases/124
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 124 that affect developers. Firefox 124 is the current [Beta version of Firefox](https://www.mozilla.org/en-US/firefox/channel... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/91/index.md | ---
title: Firefox 91 for developers
slug: Mozilla/Firefox/Releases/91
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 91 that will affect developers. Firefox 91 was released on August 10, 2021.
> **Note:** See also [Hopping on Firefox 91](https:... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/88/index.md | ---
title: Firefox 88 for developers
slug: Mozilla/Firefox/Releases/88
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 88 that will affect developers. Firefox 88 was released on April 19, 2021.
> **Note:** See also [Never too late for Firefox 88]... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/85/index.md | ---
title: Firefox 85 for developers
slug: Mozilla/Firefox/Releases/85
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 85 that will affect developers. Firefox 85 was released on January 26, 2021.
> **Note:** See also [January brings us Firefox 85... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/72/index.md | ---
title: Firefox 72 for Developers
slug: Mozilla/Firefox/Releases/72
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 72 that will affect developers. Firefox 72 was released on January 7, 2020.
## Changes for web developers
### Developer tools
... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/23/index.md | ---
title: Firefox 23 for developers
slug: Mozilla/Firefox/Releases/23
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
## Changes for Web developers
### Security
- Mixed content blocking. Firefox will no longer load non-secure (http) resources on secure (https) pages ([Firefox bug 834836](https://bugzil.la/... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/70/index.md | ---
title: Firefox 70 for developers
slug: Mozilla/Firefox/Releases/70
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 70 that will affect developers. Firefox 70 was released on October 22, 2019.
## Changes for web developers
### Developer tools... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/4/index.md | ---
title: Firefox 4 for developers
slug: Mozilla/Firefox/Releases/4
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 4, which shipped on March 22, 2011, enhances performance, adds more support for HTML5 and other evolving Web technologies, and further improves security. This article provides informati... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/4 | data/mdn-content/files/en-us/mozilla/firefox/releases/4/the_add-on_bar/index.md | ---
title: The add-on bar
slug: Mozilla/Firefox/Releases/4/The_add-on_bar
page-type: guide
---
{{FirefoxSidebar}}
Firefox 4 eliminates the status bar from the bottom of the browser window in favor of a new toolbar located at the bottom of the window. This new toolbar, with the ID "addon-bar", is a standard XUL `<tool... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/4 | data/mdn-content/files/en-us/mozilla/firefox/releases/4/updating_extensions_for_firefox_4/index.md | ---
title: Updating extensions for Firefox 4
slug: Mozilla/Firefox/Releases/4/Updating_extensions_for_Firefox_4
page-type: guide
---
{{FirefoxSidebar}}
This article offers details on changes in Firefox 4 that may impact existing extensions.
## User interface changes
### The status bar
The status bar has been remov... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/10/index.md | ---
title: Firefox 10 for developers
slug: Mozilla/Firefox/Releases/10
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 10 shipped on January 31, 2012. This article provides information about the new features and key bugs fixed in this release, as well as links to more detailed documentation for both w... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/10 | data/mdn-content/files/en-us/mozilla/firefox/releases/10/updating_add-ons/index.md | ---
title: Updating add-ons for Firefox 10
slug: Mozilla/Firefox/Releases/10/Updating_add-ons
page-type: guide
---
{{FirefoxSidebar}}
Although a lot of things have changed in Firefox 10 that, in theory, can cause add-on compatibility breakage, most of them are relatively obscure, so they're not very likely to affect ... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/111/index.md | ---
title: Firefox 111 for developers
slug: Mozilla/Firefox/Releases/111
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 111 that affect developers. Firefox 111 was released on March 14, 2023.
## Changes for web developers
### HTML
- The [`auto... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/7/index.md | ---
title: Firefox 7 for developers
slug: Mozilla/Firefox/Releases/7
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 7 shipped on September 27, 2011. This article provides information about the changes that affect developers — both of web content and of Firefox add-ons.
## Changes for web developers
... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/7 | data/mdn-content/files/en-us/mozilla/firefox/releases/7/updating_extensions/index.md | ---
title: Updating extensions for Firefox 7
slug: Mozilla/Firefox/Releases/7/Updating_extensions
page-type: guide
---
{{FirefoxSidebar}}
This article offers advice for add-on developers that want to update their extensions to work in Firefox 7. Fortunately, most of the changes are relatively minor in this release, a... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/47/index.md | ---
title: Firefox 47 for developers
slug: Mozilla/Firefox/Releases/47
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
[To test the latest developer features of Firefox, install Firefox Developer Edition](https://www.mozilla.org/firefox/developer/) Firefox 47 was released on June 6, 2016. This article lists k... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/83/index.md | ---
title: Firefox 83 for developers
slug: Mozilla/Firefox/Releases/83
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 83 that will affect developers. Firefox 83 was released on November 17, 2020.
> **Note:** See also [Firefox 83 is upon us](http... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/61/index.md | ---
title: Firefox 61 for developers
slug: Mozilla/Firefox/Releases/61
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 61 that will affect developers. Firefox 61 was released on June 26, 2018.
## Changes for web developers
### Developer tools
-... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/110/index.md | ---
title: Firefox 110 for developers
slug: Mozilla/Firefox/Releases/110
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 110 that will affect developers. Firefox 110 was released on February 14, 2023.
## Changes for web developers
### HTML
No n... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/58/index.md | ---
title: Firefox 58 for developers
slug: Mozilla/Firefox/Releases/58
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 58 that will affect developers. Firefox 58 was released on January 23, 2018.
## Changes for Web developers
### Developer Tools... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/68/index.md | ---
title: Firefox 68 for developers
slug: Mozilla/Firefox/Releases/68
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 68 that will affect developers. Firefox 68 was released on July 9, 2019.
## Changes for web developers
### Developer tools
##... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/18/index.md | ---
title: Firefox 18 for developers
slug: Mozilla/Firefox/Releases/18
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 18 was released on January 8, 2013. This article lists key changes that are useful not only for web developers, but also Firefox and Gecko developers as well as add-on developers.
##... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/86/index.md | ---
title: Firefox 86 for developers
slug: Mozilla/Firefox/Releases/86
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 86 that will affect developers. Firefox 86 was released on February 23, 2021.
> **Note:** See also [A Fabulous February Firefox... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/66/index.md | ---
title: Firefox 66 for developers
slug: Mozilla/Firefox/Releases/66
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 66 that will affect developers. Firefox 66 was released on March 19, 2019.
## Changes for web developers
### Developer tools
... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/76/index.md | ---
title: Firefox 76 for developers
slug: Mozilla/Firefox/Releases/76
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 76 that will affect developers. Firefox 76 was released on [May 5, 2020](https://wiki.mozilla.org/RapidRelease/Calendar#Future_b... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/13/index.md | ---
title: Firefox 13 for developers
slug: Mozilla/Firefox/Releases/13
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 13 was shipped on June 5, 2012. This page summarizes the changes in Firefox 13 that affect developers.
## Changes for Web developers
### HTML
- Tables' [`cellspacing`](/en-US/docs/... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/57/index.md | ---
title: Firefox 57 (Quantum) for developers
slug: Mozilla/Firefox/Releases/57
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 57 (a.k.a. Firefox Quantum) that will affect developers. Firefox 57 was released on November 14, 2017.
## Firefox 57 ... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/103/index.md | ---
title: Firefox 103 for developers
slug: Mozilla/Firefox/Releases/103
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 103 that will affect developers. Firefox 103 was released on July 26, 2022.
## Changes for web developers
### HTML
#### Rem... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/56/index.md | ---
title: Firefox 56 for developers
slug: Mozilla/Firefox/Releases/56
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 56 was released on September 28, 2017. This article lists key changes that are useful for web developers.
## Changes for Web developers
### Developer Tools
- Display Negative Line ... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/63/index.md | ---
title: Firefox 63 for developers
slug: Mozilla/Firefox/Releases/63
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 63 that will affect developers. Firefox 63 was released on October 23, 2018.
## Changes for web developers
### Developer tools... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/16/index.md | ---
title: Firefox 16 for developers
slug: Mozilla/Firefox/Releases/16
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 16 shipped on October 9, 2012. This article lists key changes that are useful for not only Web developers to know about, but also Firefox and Gecko developers as well as add-on develo... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/105/index.md | ---
title: Firefox 105 for developers
slug: Mozilla/Firefox/Releases/105
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 105 that affect developers. Firefox 105 was released on September 20, 2022.
## Changes for web developers
### HTML
No notab... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/14/index.md | ---
title: Firefox 14 for developers
slug: Mozilla/Firefox/Releases/14
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 14 shipped on July 17, 2012. This article lists key changes that are useful for not only Web developers to know about, but also Firefox and Gecko developers as well as add-on develope... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/31/index.md | ---
title: Firefox 31 for developers
slug: Mozilla/Firefox/Releases/31
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
## Changes for Web developers
### Developer Tools
Highlights:
- [Eyedropper tool to select colors in web pages](https://firefox-source-docs.mozilla.org/devtools-user/eyedropper/index.html)... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/114/index.md | ---
title: Firefox 114 for developers
slug: Mozilla/Firefox/Releases/114
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 114 that affect developers. Firefox 114 was released on June 06, 2023.
## Changes for web developers
### Developer Tools
- ... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/2/index.md | ---
title: Firefox 2 for developers
slug: Mozilla/Firefox/Releases/2
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
## New developer features in Firefox 2
Firefox 2 introduces a vast array of new features and capabilities. This article provides links to articles covering the new features.
### For website a... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/2 | data/mdn-content/files/en-us/mozilla/firefox/releases/2/adding_feed_readers_to_firefox/index.md | ---
title: Adding feed readers to Firefox
slug: Mozilla/Firefox/Releases/2/Adding_feed_readers_to_Firefox
page-type: guide
---
{{FirefoxSidebar}}
Starting with Firefox 2, Firefox has support for selecting different RSS or Atom feed readers to use when you try to read a feed. This article provides information about ho... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/2 | data/mdn-content/files/en-us/mozilla/firefox/releases/2/updating_extensions/index.md | ---
title: Updating extensions for Firefox 2
slug: Mozilla/Firefox/Releases/2/Updating_extensions
page-type: guide
---
{{FirefoxSidebar}}
This article provides information that will be useful to developers that wish to update their extensions to work properly under Firefox 2.
## Step 1: Update the install manifest
... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/2 | data/mdn-content/files/en-us/mozilla/firefox/releases/2/security_changes/index.md | ---
title: Security in Firefox 2
slug: Mozilla/Firefox/Releases/2/Security_changes
page-type: guide
---
{{FirefoxSidebar}}
This article discusses changes that affect security in Firefox 2.
## Weak ciphers disabled by default
[Firefox 2](/en-US/docs/Mozilla/Firefox/Releases/2) disables SSLv2 and the weak "export" ci... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/125/index.md | ---
title: Firefox 125 for developers
slug: Mozilla/Firefox/Releases/125
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 125 that affect developers. Firefox 125 is the current [Nightly version of Firefox](https://www.mozilla.org/en-US/firefox/chan... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/36/index.md | ---
title: Firefox 36 for developers
slug: Mozilla/Firefox/Releases/36
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 36 was released on February 24th, 2015. This article lists key changes that are useful not only for web developers, but also Firefox and Gecko developers as well as add-on developers.... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/77/index.md | ---
title: Firefox 77 for developers
slug: Mozilla/Firefox/Releases/77
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 77 that will affect developers. Firefox 77 was released on [June 2, 2020](https://wiki.mozilla.org/RapidRelease/Calendar).
**Se... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/45/index.md | ---
title: Firefox 45 for developers
slug: Mozilla/Firefox/Releases/45
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
To test the latest developer features of Firefox, install Firefox Developer Edition Firefox 45 was released on March 8, 2016. This article lists key changes that are useful not only for web d... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/3.5/index.md | ---
title: Firefox 3.5 for developers
slug: Mozilla/Firefox/Releases/3.5
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
[Firefox 3.5](https://website-archive.mozilla.org/www.mozilla.org/firefox_releasenotes/en-us/firefox/3.5/releasenotes/) (_released June 30, 2009)_ introduces a number of new features, as we... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/3.5 | data/mdn-content/files/en-us/mozilla/firefox/releases/3.5/updating_extensions/index.md | ---
title: Updating extensions for Firefox 3.5
slug: Mozilla/Firefox/Releases/3.5/Updating_extensions
page-type: guide
---
{{FirefoxSidebar}}
This article provides helpful information to extension developers trying to update their extensions to work properly in Firefox 3.5.
## Update basics
This section covers the ... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/3.5 | data/mdn-content/files/en-us/mozilla/firefox/releases/3.5/security_changes/index.md | ---
title: Security changes in Firefox 3.5
slug: Mozilla/Firefox/Releases/3.5/Security_changes
page-type: guide
---
{{FirefoxSidebar}}
This article covers security-related changes in Firefox 3.5.
## Changes to chrome registration
A security hole was closed in order to prevent remote content to be used as chrome. Thi... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/3.5 | data/mdn-content/files/en-us/mozilla/firefox/releases/3.5/icc_color_correction_in_firefox/index.md | ---
title: ICC color correction in Firefox
slug: Mozilla/Firefox/Releases/3.5/ICC_color_correction_in_Firefox
page-type: guide
---
{{FirefoxSidebar}}
Although support for color correction was introduced in Firefox 3, it was disabled by default, requiring some tinkering about in the about:config window to enable it. F... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/104/index.md | ---
title: Firefox 104 for developers
slug: Mozilla/Firefox/Releases/104
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
This article provides information about the changes in Firefox 104 that will affect developers. Firefox 104 was released on August 23, 2022.
## Changes for web developers
### HTML
No not... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/12/index.md | ---
title: Firefox 12 for developers
slug: Mozilla/Firefox/Releases/12
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
Firefox 12 was shipped on April 24, 2012. This page summarizes the changes in Firefox 12 that affect developers. This article provides information about the new features and key bugs fixed in... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases | data/mdn-content/files/en-us/mozilla/firefox/releases/3/index.md | ---
title: Firefox 3 for developers
slug: Mozilla/Firefox/Releases/3
page-type: firefox-release-notes
---
{{FirefoxSidebar}}
If you're a developer trying to get a handle on all the new features in Firefox 3, this is the perfect place to start. This article provides a list of the new articles covering features added t... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/3 | data/mdn-content/files/en-us/mozilla/firefox/releases/3/dom_improvements/index.md | ---
title: DOM improvements in Firefox 3
slug: Mozilla/Firefox/Releases/3/DOM_improvements
page-type: guide
---
{{FirefoxSidebar}}
Firefox 3 offers a number of improvements to the [Document Object Model](/en-US/docs/Web/API/Document_Object_Model) (DOM), especially in regard to support for extensions to the DOM added ... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/3 | data/mdn-content/files/en-us/mozilla/firefox/releases/3/updating_extensions/index.md | ---
title: Updating extensions for Firefox 3
slug: Mozilla/Firefox/Releases/3/Updating_extensions
page-type: guide
---
{{FirefoxSidebar}}
This article provides information that will be useful to developers that wish to update their extensions to work properly under Firefox 3.
Before going further, there's one helpfu... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/3 | data/mdn-content/files/en-us/mozilla/firefox/releases/3/updating_web_applications/index.md | ---
title: Updating web applications for Firefox 3
slug: Mozilla/Firefox/Releases/3/Updating_web_applications
page-type: guide
---
{{FirefoxSidebar}}
There are a number of changes in the upcoming Firefox 3 that may affect your website or web application, as well as new features you may wish to take advantage of. This... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/3 | data/mdn-content/files/en-us/mozilla/firefox/releases/3/full_page_zoom/index.md | ---
title: Full page zoom
slug: Mozilla/Firefox/Releases/3/Full_page_zoom
page-type: guide
---
{{FirefoxSidebar}}
Full page zoom (or just fullZoom) is a new feature in [Firefox 3](/en-US/docs/Mozilla/Firefox/Releases/3).
### Example (XUL:browser)
The following example demonstrates the use for the current focused br... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/3 | data/mdn-content/files/en-us/mozilla/firefox/releases/3/xul_improvements_in_firefox_3/index.md | ---
title: XUL improvements in Firefox 3
slug: Mozilla/Firefox/Releases/3/XUL_improvements_in_Firefox_3
page-type: guide
---
{{FirefoxSidebar}}
Firefox 3 provides a number of new XUL elements, as well as improvements to existing elements. While this material is documented in detail elsewhere, this article provides a ... | 0 |
data/mdn-content/files/en-us/mozilla/firefox/releases/3 | data/mdn-content/files/en-us/mozilla/firefox/releases/3/using_an_external_spell_checker/index.md | ---
title: Using an external spell checker
slug: Mozilla/Firefox/Releases/3/Using_an_external_spell_checker
page-type: guide
---
{{FirefoxSidebar}}
Starting with Firefox 3 (as well as Thunderbird 3 and SeaMonkey 2), you can now install an external spell checker using an extension.
This is _not_ for extensions who wa... | 0 |
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