SumatraPDF pdf reader main window on Windows with a document open, toolbar and page canvas visible.
SumatraPDF on Windows with toolbar and page canvas during a local pdf reader session. SumatraPDF Windows UI · Krzysztof Kowalczyk / sumatrapdfreader.org / sumatrapdfreader/sumatrapdf · GPL-3.0 (official site screenshot).

What we collect

The guide pages do not require accounts or forms unless a later config adds them. Cloudflare may provide standard platform logs and optional cookieless Web Analytics when enabled.

Fonts and scripts

Fonts are self-hosted with the site build when the template ships them that way. Third-party installers are not injected into the page body.

Outbound downloads

When you install SumatraPDF, your client talks to sumatrapdfreader.org or Microsoft winget services. Those parties have their own privacy policies.

Rights requests

Use contact for privacy questions about this publisher site. Upstream project discussions: sumatrapdfreader/sumatrapdf discussions.

Quiet Windows checklist

Confirm App Installer from Microsoft when the package manager command is missing. Reopen Terminal after App Installer lands, then retry the documented line. Checksums, when published, live next to assets on the official download page. Read COPYING on the project site before you redistribute a modified build under GPL terms.

Keep the first pass short. Open a disposable document, Find once, and confirm the page canvas. Prefer the same update door later so Start Menu shortcuts stay honest after upgrades.

Licence and update habits

Upstream licence text is GPL-3.0 on the official site. Winget locale language matches that free software story for the desktop Windows build. Prefer one install door per PC.

When fleet policy wants a manual install.exe, take it from the same official download page winget already wraps. Stop if a page asks you to disable SmartScreen for an unknown publisher before the official package arrives.

When something fails

If SumatraPDF is missing from Start, confirm the setup finished and avoid downloading a second renamed installer. If Find looks wrong, reopen the document rather than stacking mirrors. Safety and first-run guides deepen those checks without inventing competitor prices.

Related routes cover releases, GitHub source overview, download-safe habits, for-this-computer mapping, and vs Adobe Reader. Home keeps the Windows install command with a Copy control.