GIF → animated WebP

POST /api/gif-to-webp2 quota units per call · cache hits free

Convert an animated GIF to an animated WebP. Lossy by default for smaller files; switch on lossless mode to preserve pixels exactly. Loop count and quality are configurable.

Re-encodes an animated GIF as an animated WebP. Each GIF frame is composited (handling GIF's disposal modes), encoded with libwebp, and packed into a standard animated WebP container so any modern browser plays it. Animated WebP typically beats GIF on both size and quality for photographic content. For tiny palette animations the size advantage is smaller — toggle `lossless: true` if you need pixel-exact output.

Inputs

Name	Type	Default	Description
gif*	file	—	Input animated GIF.
quality	number (1…100)	75	WebP quality (1–100). Ignored when lossless=true.
lossless	boolean	false	Encode losslessly. Preserves pixels exactly; larger output.
loopCount	number (0…65535)	0	How many times to loop. 0 = infinite (the GIF default).

Response

Modes: binary, stream, json. Cache: yes (24h TTL).

Large outputs stream: responses over the 4 MiB cache limit are piped through as they are produced instead of buffered. They carry x-cache-skip: size and are never cached — identical follow-up calls recompute.

Every response carries x-cache (HIT / MISS / BYPASS), x-cache-signature (stable across identical inputs), and the rate-limit headers listed below.

Quota & limits

Cost per call	2 units against the 10,000-unit monthly quota. Cache hits are free — only cache misses decrement.
Burst limit	200 requests per rolling minute, shared across all tools.
Max request size	`25 MiB` (base64 inflates file payloads ~33% — the limit applies to the decoded bytes).
Max response size	`50 MiB`
Timeout	60s wall clock.
Rate-limit headers	`X-RateLimit-Limit`, `X-RateLimit-Remaining`, `X-RateLimit-Burst-Limit` on every response; `X-Quota-Warning` once 80% of the monthly quota is spent; `Retry-After` on 429s.

Errors

Errors are JSON with an error string; schema failures add a details object (Zod's flattened field errors).

Status	When	Body
400	Input fails the tool's schema (wrong type, missing required field, malformed base64) or the file bytes can't be parsed as the expected format.	{ "error": "invalid inputs", "details": { "fieldErrors": { … } } }
401	Missing or invalid X-Api-Key / X-Account-Id headers (or no session when called from the browser).	{ "error": "unauthorized" }
404	Unknown tool id, or calling /api/* on the website hostname instead of api.xtract.bot.	{ "error": "not found" }
413	Request body over the tool's max request size, or an image header declaring more megapixels than the tool's pixel budget.	{ "error": "…exceeds maxRequestBytes…" }
415	Content-Type isn't application/json on the json-body transport.	{ "error": "unsupported content-type; expected application/json" }
429	Monthly quota or the 200/min burst limit exhausted. Check Retry-After and the X-RateLimit-* headers.	{ "error": "monthly quota exceeded", "monthRemaining": 0, … }
5xx	Conversion engine failure. Safe to retry; if it persists, the input is hitting a bug — please report it.	{ "error": "…" }

Code samples

Built from the dog-bounding example.

# Download or substitute the example input:
#   curl -O https://xtract.bot/examples/gif-extract-frames/dog-bounding.gif
GIF=$(base64 -w0 < dog-bounding.gif)

curl -X POST https://api.xtract.bot/api/gif-to-webp \
  -H "Content-Type: application/json" \
  -H "Accept: application/octet-stream" \
  -H "X-Account-Id: $XTRACT_ACCOUNT_ID" \
  -H "X-Api-Key: $XTRACT_API_KEY" \
  -d '{
  "gif": "'"$GIF"'"
}'