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--- |
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license: mit |
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base_model: black-forest-labs/FLUX.2-klein-9B |
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tags: |
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- lora |
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- flux |
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- flux.2 |
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- flux.2-klein-9b |
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- image-to-image |
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- text-to-image |
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- font |
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- typography |
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- atlas |
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- comfyui |
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- safetensors |
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--- |
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# Ref2Font V3 — Contextual LoRA for FLUX.2 Klein 9B |
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**Ref2Font V3** is an updated **contextual LoRA** trained for **black-forest-labs/FLUX.2-klein-9B**. It generates **1280×1280 font atlases** from a single reference image (**"Aa"** for Latin or **"Аа"** for Cyrillic scripts). |
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### Changes in V3: |
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- **Cyrillic Support:** Now generates Russian fonts using "Аа" as reference. |
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- **Extended Glyphs:** Added `"` and `&`. |
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- **Straighter Letters:** Improved alignment and reduced "jitter" in atlas generation. |
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**Changes in V2:** |
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- Fixed alignment issues (letters no longer "dance" or jump). |
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- Increased resolution to **1280x1280**. |
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- Improved vectorization scripts. |
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> Disclaimer: it works **well**, but **not perfectly**. Expect occasional artifacts. |
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## Examples |
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## Guide |
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The full usage, installation guide and detailed workflow live in the [GitHub repo](https://github.com/SnJake/Ref2Font): |
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``` |
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https://github.com/SnJake/Ref2Font |
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``` |
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## What’s included |
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- `Ref2FontV3.safetensors` (LoRA weights) |
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- `Example Workflow/` (ComfyUI workflow with notes inside nodes) |
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- `Example/` (input images and their atlases) |
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- Post-processing scripts (`flux_pipeline.py`, `flux_grid_to_ttf.py`, `flux_upscale.py`) |
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## License |
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MIT |
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## ComfyUI setup |
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### Required models |
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1) Base model: |
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``` |
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https://huggingface.co/black-forest-labs/FLUX.2-klein-base-9B/blob/main/flux-2-klein-base-9b.safetensors |
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``` |
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Place in: `ComfyUI/models/diffusion_models` |
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2) Text encoder (Qwen): |
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``` |
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https://huggingface.co/Comfy-Org/vae-text-encorder-for-flux-klein-9b/blob/main/split_files/text_encoders/qwen_3_8b.safetensors |
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``` |
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Place in: `ComfyUI/models/text_encoders` |
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3) VAE: |
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``` |
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https://huggingface.co/Comfy-Org/vae-text-encorder-for-flux-klein-9b/blob/main/split_files/vae/flux2-vae.safetensors |
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``` |
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Place in: `ComfyUI/models/vae` |
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### LoRA |
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Download: |
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``` |
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https://huggingface.co/SnJake/Ref2Font/blob/main/Ref2FontV2.safetensors |
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``` |
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Place in: `ComfyUI/models/loras` |
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## ⚠️ IMPORTANT: V3 Required Prompts |
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**For Latin ("Aa" reference):** |
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> A technical font atlas grid of the Latin charset: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!?.,;:-"&". The style is strictly derived from the reference image "Aa". |
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**For Cyrillic ("Аа" reference):** |
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> A technical font atlas grid of the Cyrillic charset: "АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдеёжзийклмнопрстуфхцчшщъыьэюя0123456789!?.,;:-"&". The style is strictly derived from the reference image "Аа". |
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### Input image rules |
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- **Strict black & white only** (no gray, no shadows, no volume) |
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- **1280×1280** (recommended) |
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- Follow the examples in `Example/` |
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## Post-processing: Atlas → TTF |
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Use the included pipeline script to convert the atlas into a TTF. |
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### Example command (Windows) |
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``` |
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python flux_pipeline.py ^ |
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--input "path\to\your_atlas.png" ^ |
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--output-dir "output\folder" ^ |
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--no-upscale ^ |
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--use-grid ^ |
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--simplify 0.5 ^ |
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--canvas 1280 ^ |
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--contour-level 0.5 ^ |
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--trace-scale 4 ^ |
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--trace-blur 1.0 ^ |
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--smooth-iters 2 ^ |
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--baseline-mode auto ^ |
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--align-mode visual ^ |
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--keep-components 4 ^ |
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--min-component-area 3 ^ |
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--component-center-bias 0.65 ^ |
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--cell-bleed 0.4 ^ |
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--cell-bleed-max 10 ^ |
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--core-overlap-min 0.35 ^ |
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--charset "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!?.,;:-""&" ^ |
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--no-auto-invert |
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``` |
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``` |
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python flux_pipeline.py ^ |
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--input "path\to\your_atlas.png" ^ |
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--output-dir "output\folder" ^ |
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--no-upscale ^ |
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--use-grid ^ |
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--simplify 0.5 ^ |
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--canvas 1280 ^ |
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--contour-level 0.5 ^ |
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--trace-scale 4 ^ |
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--trace-blur 1.0 ^ |
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--smooth-iters 2 ^ |
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--baseline-mode auto ^ |
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--align-mode visual ^ |
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--keep-components 4 ^ |
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--min-component-area 3 ^ |
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--component-center-bias 0.65 ^ |
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--cell-bleed 0.4 ^ |
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--cell-bleed-max 10 ^ |
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--core-overlap-min 0.35 ^ |
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--charset "АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдеёжзийклмнопрстуфхцчшщъыьэюя0123456789!?.,;:-""&" ^ |
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--no-auto-invert |
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``` |
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## Notes |
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- `flux_upscale.py` is optional; you can skip it with `--no-upscale`. |
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- If the atlas looks inverted, try removing `--no-auto-invert` or add `--invert`. |
