Google, Adobe, and self-hosted fonts
Detect missing font-display: swap
Font analysis on every plan
Why Font Performance Matters
Unoptimized Fonts
- ✗Invisible text: Users stare at blank space while fonts download
- ✗Layout shifts: Text reflows when fonts swap in, hurting CLS
- ✗Slow LCP: Render-blocking fonts delay the largest content paint
- ✗Excess payload: 8 font variants add 500KB+ to every page load
With Lemwatch
- Missing font-display: swap detected automatically
- Preload recommendations for critical fonts
- Font weight tracking identifies bloated payloads
- Performance score tracks improvement over time
Optimize Your Font Stack
Font loading is one of the most overlooked performance bottlenecks. Lemwatch makes it visible.
Font Inventory
Automatically detect all fonts loaded on your pages — Google Fonts, Adobe Fonts, and self-hosted. Know exactly what's loading.
font-display: swap Detection
Check if fonts use font-display: swap to prevent invisible text during loading. Missing swap declarations cause layout shift.
Preload Analysis
Verify critical fonts are preloaded. Missing preload hints delay font rendering and hurt First Contentful Paint scores.
Font Weight Estimation
Estimate total font payload in KB. Large font files are a common cause of slow page loads, especially on mobile.
Google Fonts Detection
Identify Google Fonts usage and count. Check if they're loaded efficiently or causing render-blocking requests.
Performance Score
Get a font-specific performance score based on preloading, display swap usage, total weight, and hosting method.
Issue Detection
Clear list of font-related issues: missing swap, no preload, excessive weight, too many font families, render-blocking loads.
Self-Hosted vs CDN
Compare self-hosted fonts against CDN-loaded fonts. Self-hosting often improves performance by reducing DNS lookups.
How Font Analysis Works
Automatic detection, scoring, and recommendations
Automatic Detection
Font loading analysis runs automatically during every site check. All font sources are detected and cataloged.
Review Performance
See your font performance score, total weight, and specific issues. Each issue includes a clear explanation and fix.
Optimize & Verify
Apply recommended optimizations — add preload, enable swap, reduce font variants. Re-scan to verify improvements.
Font Performance FAQ
Common questions about font optimization
Optimize Your Fonts
Detect slow-loading fonts, missing preload hints, and font-display issues. Free on all plans — no credit card required.