# Performance

Performance Developer Tools

Free browser-based performance developer tools. 13 tools — no installs, no sign-ups, open and use instantly.

13 tools available
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HAR File Analyzer
Analyze HAR network trace files
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CSS Minifier
Minify CSS instantly
🖼️
SVG Optimizer
Optimize svg for better performance
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Page Speed Analyzer
Page Speed Analyzer — free browser-based tool
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🔍
Keyword Density Checker
Check keyword density in one click
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Meta Tag Analyzer
Meta Tag Analyzer — free browser-based tool
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Schema Markup Generator
Schema Markup Generator — free online tool
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XML Sitemap Validator
Validate XML Sitemap syntax instantly
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Canonical URL Checker
Check canonical url in one click
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Redirect Checker
Check redirect in one click
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📣
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Open Graph Tester
Test open graph live in the browser
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Page Size Analyzer
Page Size Analyzer — free browser-based tool
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Reading Time Calculator
Calculate reading time instantly
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