Browser Snapshot API

Send a website URL and receive a PNG screenshot URL backed by Cloudflare Browser Rendering and R2.

Endpoint

POST/snapshot

Authentication

Pass your API key with each request. To request access, contact the team at hello@w3dev.app.

Authorization: Bearer <api-key>

Request

{
  "url": "https://nexvio.ai"
}

Optional query flags on POST /snapshot (body unchanged):

full=1 — full-page screenshot (screenshotOptions.fullPage)
width / height — viewport size (also accepts typo widht)
scale or dpr — deviceScaleFactor for sharper PNGs (e.g. 2)
wait or delay — waitForTimeout after page load (default 3s, max 5s)
selector — wait for element before capture (e.g. [data-aeo-snapshot-ready])
selectorTimeout — max wait for selector (ms, default 90s)

With full=1, viewport defaults to 1280×1080 @ 2× scale. Without query flags, only url is sent (Cloudflare default viewport).

Example curl

curl -X POST "https://browser.w3dev.app/snapshot" \
  -H "Authorization: Bearer <api-key>" \
  -H "Content-Type: application/json" \
  -d '{"url":"https://nexvio.ai"}'

curl -X POST "https://browser.w3dev.app/snapshot?full=1&width=1280&scale=2" \
  -H "Authorization: Bearer <api-key>" \
  -H "Content-Type: application/json" \
  -d '{"url":"https://nexvio.ai"}'

Response

{
  "key": "nexvio.ai/2026-05-02T08-30-00.000Z-uuid.png",
  "url": "https://browser.w3dev.app/screenshots/nexvio.ai/2026-05-02T08-30-00.000Z-uuid.png"
}

Live test

Enter a URL and your API key to call the endpoint directly from your browser.

Full page Width Scale Wait ms Selector