Frontend Performance Roadmap
Step by step guide to becoming an Android developer.
Ask AI about Frontend Performance Roadmap
Legend
Propose
Alternatives
Options
1HTML
Minified HTML – remove comments and whitespaces.
Pre-load URLs where possible.
Minimize number of iframes.
2CSS
Minified CSS – remove comments, whitespaces, etc.
Concatenate CSS into a single file.
Make CSS files non-blocking.
Inline the critical CSS (above-the-fold).
Avoid embedded / inline CSS.
Analyse stylesheet complexity.
3Fonts
Use WOFF2 font format.
Use preconnect to load fonts faster.
Prevent Flash of Invisible Text (FOIT).
4Images
Choose image formats appropriately.
Prefer vector images rather than bitmap.
Avoid using Base64 images.
Load offscreen images lazily.
Serve images close to display size.
5JavaScript
Minify your JavaScript.
Avoid multiple inline <script> snippets.
Non-blocking JavaScript: use async / defer.
Keep dependencies up to date.
Monitor dependency size.
Check performance issues in JS files.
Use Service Workers for caching & heavy tasks.
6Networking & Delivery
Use CDN for assets.
Keep page weight < 1500 KB (ideally < 500 KB).
Keep page load time < 3 seconds.
Keep Time To First Byte (TTFB) < 1.3 seconds.
Minimize HTTP requests.
Serve files from the same protocol.
Avoid unreachable requests (404).
Set proper HTTP cache headers.
Enable GZIP / Brotli compression.
7Cookies
Cookie size < 4096 bytes.
Cookie count < 20.
8Performance Tools
Lighthouse.
WebPageTest.
Chrome DevTools.
Bundlephobia.
Squoosh.app (image optimization).
9Resources
Framework-specific guides.
Recommended talks / guides.
Related Roadmaps