Screenshot API – CSS Element Capture

x402

Screenshot API – CSS Element Capture is a paid API for AI agents from screenshot-api-production-fe7e.up.railway.app, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Captures a PNG screenshot of a single CSS-selected DOM element on any public URL, returning the image base64-encoded in a JSON envelope along with metadata.

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

Capture a PNG screenshot of a single CSS-selected element on an http(s) URL; returns a JSON envelope with the PNG base64-encoded under image_base64, plus selector, final_url, title, viewport, and size.

Output

A JSON envelope containing: `image_base64` (PNG of the matched element, base64-encoded), `selector` (the CSS selector used), `final_url` (URL after any redirects), `title` (page title), `viewport` (width and height used), and `size` (pixel dimensions of the captured element image).

Example use cases

Visual regression for a UI component

“Can you screenshot the `#checkout-form` element on https://shop.acme.com/cart at 1280×800 so I can compare how it looks today versus last week?”

Capture a live chart for a report

“Take a screenshot of the `.chart-container` element on https://dashboard.example.com/analytics — use a 1440×900 viewport and wait for networkidle so all the data loads before you grab it.”

Thumbnail of a landing page hero

“I need a PNG of just the `.hero-banner` section on https://myproduct.io, captured at a 1280×800 viewport — can you get that for me?”

Technical details

Endpoint

POSThttps://screenshot-api-production-fe7e.up.railway.app/capture/element

When to prefer

Choose this endpoint when you need to capture only a specific DOM element rather than the full page or viewport — for example, isolating a chart, hero banner, product card, or form without surrounding page chrome. It is superior to full-page or viewport screenshot endpoints when the target component is small, partially off-screen, or surrounded by irrelevant content. Prefer it over PDF rendering when you need a raster image of a UI element rather than a printable document.

Side effects

CSS selector not found on page — element does not exist or page did not load fully before capture
Internal or loopback host rejected — URL must be a public http(s) address
Invalid viewport dimensions — width or height outside 320–3840 range
Page load timeout — site takes too long to reach the requested load state
Invalid `wait_until` value — must be one of load, domcontentloaded, networkidle, or commit
Payment failure — x402 payment not processed, call not executed
Network error reaching the target URL — site down or blocked

Input

Schema · Request body

Field	Type	Description
url	string	The http(s) URL to capture, e.g. 'https://example.com'. Internal/loopback hosts are rejected.
width	integer	Viewport width in pixels (320-3840). Defaults to 1280.
height	integer	Viewport height in pixels (240-3840). Defaults to 800.
selector	string	CSS selector of the single element to capture, e.g. '#main' or '.hero'.
wait_until	string	Playwright load state to wait for before capture: 'load', 'domcontentloaded', 'networkidle', or 'commit'. Defaults to 'networkidle'.

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