SumatraPDF new features: April 23, 2026

New in the SumatraPDF pre-release builds: Digital signature info in Document Properties Document Properties shows the digital signatures in a PDF: who signed it, whether the certificate is trusted and whether the document is unchanged since signing. It also shows the signing time, reason and location. The sign command-line tool is also enabled (#5572). Progress while opening archives When a comic book archive is being opened, the loading message shows progress as each file inside the archive is extracted. More: changes from April 23, 2026 and the full changelog.