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Sumatra PDF vs Adobe Acrobat: catalog facts
Sumatra PDF	Adobe Acrobat
Free Completely free and open source with no ads, bundled software or subscription. No account…	Freemium Acrobat Reader is free to download and use without a subscription; text and image editing…
Windows, Command line	Windows, macOS, Web, Android, iOS
Opens PDF, EPUB, MOBI, FictionBook, CBZ/CBR/CBT/CB7, DjVu, XPS, CHM, SVG and many image formats including HEIC and AVIF Lightweight and fast; the portable single .exe build writes nothing to the registry	Free Reader for Windows 10/11, macOS 10.15+, iOS 16+ and Android 8+, plus an Acrobat web app in… Reader includes commenting, highlights, sticky notes, form filling and Fill & Sign at no cost
Windows only (Windows 7 through 11; XP and Vista need version 3.1.2); no macOS or Linux version Only unencrypted EPUB and MOBI/AZW ebooks open; DRM-protected files are not supported	Editing text and images, creating and converting PDFs need an Acrobat Standard or Pro subscription Proprietary; Adobe logos may not be used without a license
Downloadable app	Downloadable app, Web application, Hosted service
Open source	Closed source
License: GPL-3.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 20, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.