HttpFixer vs GTmetrix
GTmetrix is an excellent diagnostic tool — it tells you what's slow and why. HttpFixer generates the exact server config to fix it. These tools do different jobs and work well together.
GTmetrix: "Eliminate render-blocking resources" (score: 64/100)
HttpFixer SpeedFixer: location ~* \.(js|css)$ { add_header Cache-Control "public, max-age=31536000, immutable"; }
Side-by-side comparison
| Feature | GTmetrix | HttpFixer |
|---|---|---|
| Live performance audit | ✓ Excellent | ✓ Via SpeedFixer + PSI API |
| Waterfall chart | ✓ Industry-leading | ✗ Not available |
| Historical tracking | ✓ With account | ✗ Not tracked |
| Stack-specific fix config | ✗ Not available | ✓ Nginx, Cloudflare, Vercel, Apache |
| Security headers audit | ✗ Not available | ✓ Full security headers scan |
| CORS preflight test | ✗ Not available | ✓ Live OPTIONS request |
| Copy-paste server config | ✗ Not generated | ✓ Every fix ships config |
| No account required | Partial (5 tests/mo free) | ✓ Unlimited, no account |
The right workflow
- Run GTmetrix to see your full performance picture — waterfall, scores, history
- Take the failing audits (render-blocking, cache policy, compression) to SpeedFixer
- SpeedFixer fetches the live PSI results, detects your stack, and outputs the exact config
- Deploy, re-run GTmetrix to confirm improvement
When to use each
Use GTmetrix when you need the complete performance picture — waterfall analysis, filmstrip, historical tracking, and comparison across test locations. GTmetrix excels at diagnosis and monitoring.
Use HttpFixer SpeedFixer when you have the diagnosis and need the fix. SpeedFixer takes the PSI audit IDs and generates the exact Nginx location block, Cloudflare Cache Rule, or Vercel headers JSON to resolve each failing audit.
Try SpeedFixer — live PSI audit + stack-specific config →