What does it cost to convert GIF to PNG?

$0.003 per call, paid in USDC on Base via x402.

How large can the GIF file be?

Up to 25 MB (26,214,400 bytes). Past a limit the call answers too_large (413).

What happens if the conversion fails?

The tool answers with a typed JSON error from the errors table. Payment is settled only after the tool has produced its result; a call that fails inside the tool is never settled.

catalogue / tools / Images / GIF to PNG

Convert GIF to PNG

To convert GIF to PNG, send one POST to /v1/image-convert with the GIF source and "format": "png" in the body. Each call costs $0.003 in USDC on Base via x402, with no account and no API key. The source file can be up to 25 MB.

Endpoint: POST /v1/image-convert
Price: $0.003 per call
Service: image-convert
Docs: /docs/image-convert

01Limits

Limit	Value
Largest source file	25 MB (26,214,400 bytes)
Timeout	60 s
Source formats	AVIF, GIF, JPEG, PNG, SVG, TIFF, WebP
Output formats	JPEG, PNG, WebP
Option quality	default 80

02Example

A real GIF to PNG run of image-convert.

Request

POST /v1/image-convert
content-type: application/json
payment-signature: <base64 x402 payload>

{
  "url": "https://grist.tools/samples/images/pair-note.gif",
  "quality": 80,
  "format": "png"
}

Response

200 OK
payment-response: <base64 settlement receipt>

{
  "source_url": "https://grist.tools/samples/images/pair-note.gif",
  "source_format": "gif",
  "format": "png",
  "mime_type": "image/png",
  "width": 556,
  "height": 100,
  "bytes": 1021,
  "image_base64": "iVBORw0KGgoAAAANSUhEUgAAAiwAAABkCAIAAAAqgfyWAAAACXBIWXMAAAPoAAAD..."
}

Source file: images/pair-note.gif, 1.9 KB (1,937 bytes). Two-colour GIF of the same 556x100 raster as ocr-scan.png: two uppercase lines drawn from a hand-written 5x7 bitmap font, SAMPLE SCAN FOR OCR and SECOND LINE 2026. The request sets quality to 80. The recorded run returned 1,021 bytes of PNG, 53% of the source size, with an image of 556x100 pixels. Decoded, the PNG in image_base64 opens with 89 50 4E 47 0D 0A 1A 0A 00 00 00 0D (ASCII PNG).

In the sample itself, the GIF89a header declares a logical screen of 556 by 100 pixels with a global colour table of 2 entries, and the file holds 1 image. In the returned PNG: its IHDR chunk declares 556 by 100 pixels, 8-bit truecolour RGB and no interlacing. The next chunk is pHYs.

03Format notes

GIF as a source

Each GIF frame takes its colours from a palette of at most 256 entries, and transparency is a single palette index rather than a graded alpha channel. image-convert recognises the format by the ASCII header GIF87a or GIF89a, whereas the OCR detector accepts any file opening with the four bytes GIF8. Animation does not survive image-convert: sharp opens the input with animated decoding off, so the first frame is transcoded and later frames are ignored, and the pixel budget is checked against that frame's header dimensions. GIF is missing from the encoder's output enum, so these pages read GIF but never write it. When text is the goal, ocr-image-to-text passes the same bytes to the offline Tesseract engine after its signature check and returns the recognised lines together with a mean confidence score for the page.

PNG as a target

PNG output is lossless, so image-convert ignores the quality value when PNG is requested. Its encoder options are pinned: the maximum zlib compression level, a fixed effort, adaptive filtering off, palette quantisation off and no interlacing, so identical pixels always deflate to identical bytes. Dimensions are kept and reported in the response, and metadata is stripped. Vector input takes a separate service: svg-to-png renders the document at a caller-set density, which drives the natural raster size, and an optional width or height fits the render inside that box with the lanczos3 kernel, keeping the aspect ratio, before the same pinned PNG options apply. video-thumbnail writes PNG by default through ffmpeg's png encoder; when a width is requested, the height follows the aspect ratio and is rounded to an even number.

Note: An animated GIF is converted from its first frame only.

04Errors

Code	HTTP
`invalid_input`	`400`
`blocked_target`	`403`
`unreachable_target`	`424`
`upstream_timeout`	`424`
`unsupported_content_type`	`415`
`too_large`	`413`
`unprocessable`	`422`
`internal`	`500`

When each is raised, and what it means for payment: /docs/image-convert.

05Questions

What does it cost to convert GIF to PNG?: $0.003 per call, paid in USDC on Base via x402.
How large can the GIF file be?: Up to 25 MB (26,214,400 bytes). Past a limit the call answers too_large (413).
What happens if the conversion fails?: The tool answers with a typed JSON error from the errors table. Payment is settled only after the tool has produced its result; a call that fails inside the tool is never settled.