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Smallpdf alternatives · PDF Editors

Open-source alternatives to Smallpdf

Smallpdf is not described as open source on its own site. 4 of the 45 other PDF editors in this directory are open source, according to their own sites.

Smallpdf's current pricing could not be confirmed from its own site. All of them are free or have a free plan.

4 tools · Listings checked up to Nov 13, 2026 · Where the facts come from

How each one differs from Smallpdf

  1. Stirling PDF

    Open-source PDF editor you can run on your own machine or server

    • Only Stirling PDF lists macOS and Linux apps.
    • Only Smallpdf lists iOS and Android apps.
    • Only Smallpdf lists a browser extension.
    • Stirling PDF is open source and self-hostable, according to its own site.
    Stirling PDF pricing and details

  2. PDFsam

    Split and merge PDFs offline, with paid Visual and Enhanced editions

    • Only PDFsam lists macOS and Linux apps.
    • Only Smallpdf lists a web app.
    • Only Smallpdf lists iOS and Android apps.
    • Only Smallpdf lists a browser extension.
    PDFsam pricing and details

  3. Skim

    Free PDF reader and note-taker for Mac, built for papers

    • Only Skim lists a macOS app.
    • Only Smallpdf lists a web app.
    • Only Smallpdf lists Windows, iOS and Android apps.
    • Only Smallpdf lists a browser extension.
    Skim pricing and details

  4. SumatraPDF

    Small, free PDF, eBook and comic reader for Windows

    • Only Smallpdf lists iOS and Android apps.
    • Only Smallpdf lists a browser extension.
    • SumatraPDF is open source, according to its own site.
    • SumatraPDF also covers documents.
    SumatraPDF pricing and details

Common questions

Is there an open-source alternative to Smallpdf?

Yes. Stirling PDF, PDFsam, Skim and SumatraPDF are open source, according to their own sites.

Is Smallpdf open source?

Smallpdf is not described as open source on its own site. The listing was checked on Oct 18, 2026 against the pages it cites.

When was this checked?

Each listing shows its own date. On this page they run from Oct 18, 2026 to Nov 13, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Smallpdf: the alternatives its listing names first, then the tools that share the most features with it.