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Adobe Acrobat Reader alternatives: 6 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave Adobe Acrobat Reader: frequent prompts to upgrade to paid Acrobat, and heavier and slower to open than lightweight viewers. We ranked 6 alternatives by how directly each one replaces Adobe Acrobat Reader, then by reviews, real visits and how recently each app's facts were checked against its own website. Sumatra PDF currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1Sumatra PDF logoSumatra PDFOpen sourceYesWindows4 of 466.5
2Okular logoOkularOpen sourceYesLinux, Windows4 of 462.6
  1. Sumatra PDF logo

    1. Sumatra PDFTop pick

    Best for: Windows users who want the fastest, lightest possible reader with no extras

    Open sourceWindows

    66.5

    score / 100

    Why switch from Adobe Acrobat Reader

    A tiny, fast, open-source viewer for Windows with no ads or upgrade prompts.

    Pros

    • Opens files instantly and uses little memory
    • Reads ebooks and comics as well as PDF
    • Free, open source, no ads, portable version

    Cons

    • Windows only
    • Basic annotation and limited form support
    • No editing tools
    Visit Sumatra PDF Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Sumatra PDF a good Adobe Acrobat Reader alternative?

    Verified facts

    4 of 4 verified
    Price
    Free and open source
    Checked Oct 25, 2026sumatrapdfreader.org(opens source in a new tab)
    Platforms
    Windows only
    Checked Oct 25, 2026sumatrapdfreader.org(opens source in a new tab)
    Formats
    PDF, EPUB, MOBI, comics and more
    Checked Oct 25, 2026sumatrapdfreader.org(opens source in a new tab)
    Windows versions
    Windows 7 to 11, incl. ARM64
    Checked Oct 25, 2026sumatrapdfreader.org(opens source in a new tab)
  2. Okular logo

    2. Okular

    Best for: Linux users and anyone wanting a free viewer with strong annotation and signing

    Open sourceLinux, Windows

    62.6

    score / 100

    Why switch from Adobe Acrobat Reader

    A free, open-source viewer with strong annotation tools that also runs on Linux.

    Pros

    • Excellent annotation tools saved into the PDF
    • Opens many formats besides PDF
    • Can verify and add digital signatures

    Cons

    • Cannot edit existing text or convert files
    • macOS only through untested nightly builds
    • KDE-style interface feels out of place on Windows
    Visit Okular Details and reviews
    How this score is calculated
    Editorial fit ×0.387
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Okular a good Adobe Acrobat Reader alternative?

    Verified facts

    4 of 4 verified
    License
    GPLv2+
    Checked Oct 25, 2026okular.kde.org(opens source in a new tab)
    Digital signatures
    Verify and sign
    Checked Oct 25, 2026okular.kde.org(opens source in a new tab)
    Windows
    Microsoft Store
    Checked Oct 25, 2026okular.kde.org(opens source in a new tab)
    Linux
    Packaged by distributions
    Checked Oct 25, 2026okular.kde.org(opens source in a new tab)

The best Adobe Acrobat Reader alternative for…

The highest-ranked app in this list for each need.

Sumatra PDF logo

Best Adobe Acrobat Reader alternative for most people

Sumatra PDF

A tiny, fast, open-source viewer for Windows with no ads or upgrade prompts.

Okular logo

Best Adobe Acrobat Reader alternative for a free option

Okular

A free, open-source viewer with strong annotation tools that also runs on Linux.

Xodo logo

Best Adobe Acrobat Reader alternative for a free plan you can upgrade

Xodo

Free mobile and web viewer with annotation, plus paid editing if you need it later.

Sk

Best Adobe Acrobat Reader alternative for open source

Skim

A free Mac reader built for annotating and taking notes on papers.

PDFgear logo

Best Adobe Acrobat Reader alternative for Mac

PDFgear

Free reader that can also edit, convert and sign, with no account required.

PDF-XChange Editor logo

Best Adobe Acrobat Reader alternative for Windows

PDF-XChange Editor

A fast Windows viewer whose free mode includes many annotation tools.

Okular logo

Best Adobe Acrobat Reader alternative for Linux

Okular

A free, open-source viewer with strong annotation tools that also runs on Linux.

PDFgear logo

Best Adobe Acrobat Reader alternative for iPhone and Android

PDFgear

Free reader that can also edit, convert and sign, with no account required.

PDFgear logo

Best Adobe Acrobat Reader alternative for working in the browser

PDFgear

Free reader that can also edit, convert and sign, with no account required.

Adobe Acrobat Reader alternatives: common questions

What is the best alternative to Adobe Acrobat Reader?

Sumatra PDF ranks first right now. A tiny, fast, open-source viewer for Windows with no ads or upgrade prompts. Okular and PDFgear follow it in our ranking.

Is there a free alternative to Adobe Acrobat Reader?

Yes. Sumatra PDF (open source), Okular (open source), PDFgear (free) and Xodo (free plan + paid) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Adobe Acrobat Reader?

Yes: Sumatra PDF, Okular and Skim.

Which Adobe Acrobat Reader alternatives work on Linux?

Okular and Xodo run on Linux.

Why do people switch from Adobe Acrobat Reader?

The complaints we hear most: frequent prompts to upgrade to paid Acrobat; heavier and slower to open than lightweight viewers; cannot edit text or convert documents.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Adobe Acrobat Reader, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.