The developer, Wolfgang Baird (also known for MacForge and Parece), released several versions of No-Zoomer between 2010 and 2017.
Version 2.3.0.2 is notable for:
.dmg is widely documented across vintage Mac forums.No-Zoomer.3dsx or .cia – not “setup.exe” or any PC executable.Tools → Add-ons → click the gear icon → Install Add-on From File..xpi file.shasum -a 256 ~/Downloads/No-Zoomer_2.3.0.2.dmg
Only for isolated systems (e.g., old laptops, virtual machines). Not recommended for daily browsing due to security vulnerabilities. no-zoomer 2.3.0.2 download
xpinstall.signatures.required to false in about:config..xpi as described above.Visit a website known for forced zooming (e.g., older WordPress sites with viewport meta tags). Without No-Zoomer, the page might load at 90% or 120%. After installation, the page will remain at your chosen default level. To confirm it’s working: No-Zoomer 2
F12).document.body.style.zoom – it should return nothing or your forced ratio.