pdf-lib vs Sejda
No leader: the top candidate pdf-lib has only 0.20 confidence (low), below the 0.35 needed to declare a winner. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.
Capabilities
Feature-by-feature on the axes that matter for pdf editors. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
pdf-lib
A pure JavaScript PDF manipulation toolkit that runs across any JavaScript environment including web browsers, Node.js, Deno, and React Native. It enables creating new PDFs, editing existing documents, filling forms with various field types, embedding fonts, and merging or splitting pages.
Sejda
A PDF editor available as both web-based and desktop applications, offering document editing, form creation, and file conversion tools with offline and cloud options.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
pdf-lib
Not documented yet.
Sejda
- Google Drive
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.