Chrome network error · -211 · Certificate

ERR_CERT_WEAK_KEY

The server responded with a certificate that contains a weak key (e.g. a too-small RSA key).

Chromium's description

The server responded with a certificate that contains a weak key (e.g. a too-small RSA key).

Chrome shows it as net::ERR_CERT_WEAK_KEY, error -211. puppeteer and Playwright report the same name when a page fails to load in Chromium.

ERR_CERT_WEAK_KEY in the screenshot API

Certificate errors do not stop a render: the API's browser accepts the certificate and captures the page the server sends, so a screenshot of a site with this error works. It does not tell you whether the certificate is valid; use an SSL checker for that.

Only the page's own load can fail a render. An image, script or frame of the page that fails with a network error does not: the page is captured as the browser shows it without that resource.

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Other common errors

ERR_CONNECTION_RESET ERR_CONNECTION_REFUSED ERR_CONNECTION_TIMED_OUT ERR_CACHE_MISS ERR_ADDRESS_UNREACHABLE ERR_TIMED_OUT ERR_SSL_PROTOCOL_ERROR ERR_CONNECTION_CLOSED ERR_QUIC_PROTOCOL_ERROR ERR_NAME_NOT_RESOLVED ERR_TOO_MANY_REDIRECTS ERR_NETWORK_CHANGED

All 249 Chrome network errors · Screenshot API errors

Screenshot API

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GET https://api.screenshotbase.com/v1/take?url=https://example.com&full_page=true

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  -d viewport_width=1280 -d viewport_height=800 \
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Website screenshot Capture any page as an image. Full page screenshot Capture a whole page, top to bottom. Mobile website screenshot See a site on iPhone, Android and iPad. URL to PDF Save any web page as a PDF. URL to markdown Turn a web page into markdown. HTML to PDF Print your own HTML as a PDF. HTML to image Render HTML and CSS as a PNG, JPG or WebP. HTML to markdown Turn HTML into clean markdown. URL to PNG Save a web page as a PNG image. URL to JPG Save a web page as a JPG image. Scrolling screenshot One long image of a page, no stitching. HTML to PNG Render HTML as a lossless PNG. HTML to JPG Render HTML as a compact JPG. Viewport sizesScreen sizes and pixel ratios of 46 devices. ErrorsChrome network errors and screenshot API errors, with fixes.