Install FontSwap
Chrome Extension
Identify fonts on any site.
Swap to free alternatives.
FontSwap detects every font on a page, flags premium ones, and lets you replace them with free alternatives — live, in your browser.
How It Works
Install
Add FontSwap to Chrome from the Web Store. No account needed.
Click the icon
Open any website and click the FontSwap icon to scan all fonts on the page.
Swap fonts live
Replace any font with a free alternative. See changes instantly, undo anytime.
Features
Font Detection
Canvas-based identification of every font on the page. Works with web fonts and system fonts.
Free Alternatives
Premium fonts are flagged with a badge and matched to free alternatives from our database.
Live Swap & Undo
Replace any font on the page in real-time. Undo instantly. Changes are local only.
Font Inspector
Click any element to see its computed font stack, size, weight, line-height, and letter-spacing.
Highlight Usage
See every element using a specific font highlighted on the page at once.
Export Results
Export the full font audit as Markdown, JSON, or CSS custom properties.
WCAG Contrast Audit
Check text/background contrast ratios against WCAG AA and AAA standards.
Performance Metrics
See font file sizes, loading strategy, and render-blocking impact at a glance.
No tracking. No accounts.
FontSwap runs entirely in your browser. It never sends data to external servers, never requires sign-up, and never tracks your browsing. Your fonts, your business.
Frequently Asked Questions
What browsers does FontSwap support?
FontSwap is a Chrome extension and works in Google Chrome and Chromium-based browsers like Brave, Edge, and Arc.
Does FontSwap collect my data?
No. FontSwap runs entirely in your browser. It does not send any data to external servers, does not require an account, and does not track your browsing.
How accurate is the font detection?
FontSwap reads the computed font-family from the DOM and resolves it against loaded web fonts. Accuracy is very high for web fonts loaded via CSS. System font fallbacks are identified by their generic family name.
Can I use FontSwap on any website?
Yes. FontSwap works on any website that loads in Chrome, including sites behind authentication. It reads fonts from the rendered page, so it works regardless of how the site is built.
Is FontSwap free?
Yes. FontSwap is completely free with no premium tier, no ads, and no in-app purchases.