FontMapper – Local Fonts for Any Website

Replace any website’s fonts with the fonts installed on your computer — per domain.

FontMapper lets you take over the typography of any website. Open the extension on any page and you'll see exactly which fonts the site is using. Pick a replacement from the fonts already installed on your computer — system fonts, fonts you've downloaded, anything — and the page updates instantly. FontMapper reads your local fonts via Chrome's Local Font Access API, applies the swap with native CSS @font-face substitution, and remembers your choices per domain so each site stays personalized on every visit. Open the extension on any page and you'll see exactly which fonts the site is using. Pick a local font from your computer as a replacement, and the site updates instantly. Visit the same site tomorrow and FontMapper applies your preferences automatically. Visit a different site and its own preferences (or none) apply. KEY FEATURES • Per-domain font mapping — different replacements for different sites, automatically applied on every visit • Searchable font picker — type to filter from every font installed on your machine; each option previews in its own typeface so you can read it before picking • Hover to identify — hover any detected font in the popup and FontMapper highlights every element on the page using that font, so you always know what you're remapping • Instant preview — changes apply in real time without reloading • One-click reset — wipe all mappings for a site instantly • Zero data collection — everything is stored locally with chrome.storage, no network requests, no tracking, no accounts HOW IT WORKS FontMapper uses standard CSS @font-face local() substitution under the hood, so it's fast and respects the original layout. Mappings are scoped to each domain and saved in your local browser storage — never sent anywhere. GREAT FOR • Making poorly-typeset blogs and news sites readable with the font you actually like • Replacing display fonts that don't render well at your screen • Designers comparing how different fonts feel on a real website before licensing • Accessibility — swap in fonts with better readability characteristics Open source. No ads. No analytics. Just better typography on every site.