Is SumatraPDF safe?

Our pick

Yes. SumatraPDF is a legitimate tool and IsLegit's pick for: Open PDFs on a PC. Tiny, fast PDF and ebook reader for Windows.

Open SumatraPDF

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Site checked 16 Oct 2026

Free
Your files stay on your device
Open source
Secure connection (HTTPS)
Homepage contacts no ad networks
No known trackers on the homepage
Opens instantly
No ads
Also reads EPUB and comics
Cannot sign or edit

Works on: Windows · Free

Where it shows up

Open PDFs on a PC Our pick

Alternatives

Adobe Acrobat Reader

Good

The standard reader, with free Fill and Sign.

Free plan + paid Windows, Mac, Android, iPhone, Web No ads · No trackers

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Questions

Does SumatraPDF show ads or track you?: Its homepage loaded no ad networks and no known trackers in our automated check on 16 Oct 2026.
Is SumatraPDF free?: Yes, SumatraPDF is free.