Sources
Primary sources are the official project site, project download page, GitHub licence text, and winget-pkgs manifests for SumatraPDF.SumatraPDF. Secondary forums are not treated as install doors.
Updates
When a new build lands, we re-check asset names and the winget id. Public HTML never pins a dotted version. Stamps use injected review and release fields.
Corrections
Send factual errors through contact. Independence statement lives on about.
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.