Nerulio.
All toolsStudioNo upload · processed on this device

Bitmap Font Maker

Turn a grid font sheet and character order into PNG, BMFont and JSON.

Drop image files hereProcess many files at once
No upload · processed on this device

Example

Original geometric sample · 96 × 64
Original geometric sample · 96 × 64
Processed sample · 96 × 64
Processed sample · 96 × 64

Example generated with this tool. ZIP tools show their preview; inspect the downloaded archive for every file.

Bitmap Font Maker

Turn a grid font sheet and character order into PNG, BMFont and JSON.

How it works

  1. Add images
  2. Adjust settings and review the result
  3. Download a new file

Supported formats

PNG / JPG / WebP / AVIF / HEIC → PNG + FNT + JSON (ZIP) — Input decoding depends on browser support and optional engines.

What this tool does

Turn a grid font sheet and character order into PNG, BMFont and JSON.

Implementation and verified quality

advanced · fixed grid BMFont. Quality qualification is in progress. Pro/Flagship quality has not been established.

Before you export

Fixed-cell grids only. No kerning, variable advance or automatic Godot resource generation.

Frequently asked questions

What are this tool’s limitations?

Fixed-cell grids only. No kerning, variable advance or automatic Godot resource generation.

Are my files uploaded?

Nerulio processes selected files on your device and has no file-upload API. Optional engines and models are downloaded from third parties; those requests expose connection information such as your IP address.

Will my work be saved automatically?

No. Images and editing state stay in this tab; media output can use local temporary storage. Changing language preserves your work; reloading, closing the tab, or following a link to another page can clear it.