Sejda API

What Sejda API is

Sejda API is a REST service that converts a web page URL or HTML source code into a PDF. Requests use an API key in the Authorization header; browser-side JavaScript can use a publishable key. Conversion controls include page size and orientation, viewport width, margins, print stylesheets, rendering delay, and lazy loading. Documentation examples cover Bash cURL, Node.js, Python, JavaScript with CORS, Java, PHP, and C# .NET. Sejda also offers website links for visitors to fill and sign or fully edit a document, with an optional return by email. A Save as PDF link works without a paid plan and allows 10 uses per visitor per hour. Link generation supports files hosted on a website, Google Drive, or Dropbox, but Sejda says it does not offer document storage. The API does not cover other PDF tools such as merge or compress. Requests over 50MB are rejected, and per-hour or concurrency limits also apply. A free API account is listed as free; paid options start at $12/mo.

Who it suits

Sejda API suits developers who need to convert web pages or HTML to PDF and want examples in several programming languages. It may also suit sites offering document fill, signing, or editing links, provided the API’s scope and limits fit.

Limits

The free account has rate limits and a 50MB request-size limit. The Save as PDF website link allows 10 uses per visitor per hour, and paid plans unlock pro-only parameters.

Getting started

1. Open the Sejda developer page
2. Create a free API account or choose a paid plan
3. Authenticate requests with an API key
4. Use a publishable key for browser-side JavaScript when appropriate
5. Send a web page URL or HTML source to the REST endpoint
6. Set page and rendering options for the conversion

Verdict

Sejda API centers on web-page and HTML-to-PDF conversion, with configurable rendering and documentation examples for several languages. Check the request-size and rate limits, and note that other PDF tools do not have API access.