ssrchecker
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An API for programmatic SSR checks

Short answer
A public API for the SSR checker is planned but not yet live. It will let you send a URL and receive an SSR, CSR, or hybrid verdict as JSON — the same result the web tool produces — so you can run rendering checks in CI pipelines, audits, and monitoring. You can join the early-access list now.

The web tool answers the question one URL at a time. The API will answer it programmatically — a single endpoint that takes a URL and returns the verdict as structured JSON, so rendering checks can live inside a build pipeline, a scheduled audit, or an agency's reporting stack instead of a browser tab.

In developmentThe endpoint isn't open yet. This page documents what's coming so you can decide whether to wait for it — and register interest so we build the right thing.

What's planned

The intended shape is deliberately simple: a single authenticated GET request with the URL to check, returning the same verdict the web tool produces.

GET https://ssrchecker.com/api/check?url=https://example.com
Authorization: Bearer <your-api-key>

Every response will include a reportUrl pointing back to a shareable result page on the site, so an API result is always one click from the full visual comparison — useful for dropping into a client report or a pull-request comment.

The planned response

The JSON body will carry the verdict plus the numbers behind it. Fields below are indicative and may change before launch.

FieldTypeDescription
verdictstring"ssr" | "csr" | "hybrid" | "blocked" | "crawlerBlocked"
contentRationumberHow much of the rendered content is present in the raw HTML (0–1).
frameworkstring | nullDetected framework, when identifiable (e.g. "Next.js").
rawWordCountnumberWords present before JavaScript runs.
renderedWordCountnumberWords present after the browser render.
missingobjectWhich elements (title, canonical, links, body) differ between the two.
reportUrlstringA link back to the shareable result page on ssrchecker.com.
checkedAtstringISO 8601 timestamp of the check.

Early access

The API will launch with a free tier for low-volume use and paid tiers for teams running checks at scale — pricing that reflects the fact that each check runs a real headless-browser render. If you have a use case in mind — CI checks, bulk audits, monitoring client sites — tell us through the contact pageand we'll add you to the early-access list and shape the API around real usage. In the meantime, the web checker handles one-off checks, and the rendering service covers audits done for you.

API FAQ

A public API is in development but not yet open. It will let you send a URL and receive an SSR, CSR, or hybrid rendering verdict as JSON, the same result the web tool produces, so checks can run in CI pipelines and automated audits. You can join the early-access list through the contact page.