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PDF.js — PDF (Open Source)

PDF.js is an open-source PDF solution from Mozilla. Compare it against 60 other PDF tools on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is PDF.js?

PDF.js is open source — its source code is publicly available and free to use, modify and self-host, usually with an active community and no licensing fees. It is categorised under PDF and published by Mozilla. Buyers typically evaluate PDF.js when they need a dependable PDF option and want to weigh the trade-offs between free, open-source and paid tools before committing.

PDF.js alternatives

If PDF.js isn't the right fit, compare these PDF alternatives side by side:

ABBYY FineReaderAdobe Digital EditionsAdobe ReaderApache PDFBoxBluebeam RevuBullzip PDF PrinterCutePDFEvinceFoxit PDF ReaderGhostscriptGhostviewIssuuJasperReportsJavelin PDF Reader

Frequently asked questions

Is PDF.js free?
Yes. PDF.js is open source and free to use, with no purchase cost for the core product.
What are the best PDF.js alternatives?
Popular PDF alternatives to PDF.js include ABBYY FineReader, Adobe Digital Editions, Adobe Reader, Apache PDFBox. See the full list of PDF on FreeSoftwareX.
What type of software is PDF.js?
PDF.js is an open-source PDF tool developed by Mozilla.

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