Font tools
Font tools: Bitmap font from a TTF/OTF: atlas PNG, BMFont .fnt with kerning, JSON and a preview of a sample line. Pixel mode snaps glyphs to whole pixels with no antialiasing. Full schema: https://rengi.dev/v1/font-tools/schema
Answeringour last check, 2026-10-21
1 of 1checks answered this week
909 msmedian answer time
$0.1listed price per call
$0.1price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://rengi.dev/v1/font-tools/bitmap
| Category | Everything else |
|---|---|
| Provider host | rengi.dev |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-21 | valid payment request | 402 | $0.1 | 909 ms |
Example input (from the provider)
{
"body": {
"charset": "cyrillic",
"fontUrl": "https://rengi.dev/samples/DejaVuSans.ttf",
"mode": "pixel",
"size": 16
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"chars": {
"description": "charset=custom: exactly these characters.",
"maxLength": 4000,
"type": "string"
},
"charset": {
"default": "cyrillic",
"enum": [
"ascii",
"latin1",
"cyrillic",
"custom"
],
"type": "string"
},
"color": {
"default": "#ffffff",
"description": "Glyph colour baked into the atlas (white lets the engine tint it).",
"pattern": "^#?[0-9a-fA-F]{6}$",
"type": "string"
},
"font": {
"description": "TTF or OTF file as base64.",
"type": "string"
},
"fontUrl": {
"format": "uri",
"type": "string"
},
"mode": {
"default": "pixel",
"description": "pixel: crisp, no antialiasing, for pixel art games; smooth: antialiased.",
"enum": [
"pixel",
"smooth"
],
"type": "string"
},
"outline": {
"default": 0,
"maximum": 8,
"minimum": 0,
"type": "integer"
},
"outlineColor": {
"default": "#000000",
"pattern": "^#?[0-9a-fA-F]{6}$",
"type": "string"
},
"padding": {
"default": 1,
"maximum": 8,
"minimum": 0,
"type": "integer"
},
"sample": {
"default": "The quick brown fox 0123 \u041f\u0440\u0438\u0432\u0456\u0442, \u044f\u043a \u0441\u043f\u0440\u0430\u0432\u0438?",
"maxLength": 200,
"type": "string"
},
"size": {
"default": 16,
"description": "Pixel size (em).",
"maximum": 256,
"minimum": 6,
"type": "integer"
}
},
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"atlas": {
"type": "string"
},
"base": {
"type": "number"
},
"fnt": {
"description": "AngelCode BMFont text format (.fnt): Unity TextMeshPro/BMFont importers, Godot, Phaser, LibGDX.",
"type": "string"
},
"glyphs": {
"type": "number"
},
"height": {
"type": "number"
},
"json": {
"type": "string"
},
"lineHeight": {
"type": "number"
},
"missing": {
"description": "Characters the font does not have.",
"items": {
"type": "string"
},
"type": "array"
},
"preview": {
"type": "string"
},
"width": {
"type": "number"
}
},
"required": [
"atlas",
"fnt",
"json",
"preview",
"width",
"height",
"glyphs",
"missing",
"lineHeight",
"base"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}