Performance & CWV

Explore SEO terms under the Performance & CWV category. Learn definitions, difficulty levels, and related concepts.

⚡Brotli Compression

Difficulty: Advanced

Related: cache control immutablecache control max age301 redirect

⚡CDN Edge Caching

Difficulty: Advanced

Related: cache key normalizationcache ttlcdn tiered caching

⚡CDN Tiered Caching

Difficulty: Advanced

Related: cache ttlcdn edge cachingclient hints

⚡CLS

Difficulty: Advanced

Related: cdn tiered cachingclient hintscode splitting

⚡Cache Key Normalization

Difficulty: Advanced

Related: cache control stale if errorcache control stale while revalidatecache ttl

⚡Cache TTL

Difficulty: Advanced

Related: cache control stale while revalidatecache key normalizationcdn edge caching

⚡Cache-Control: immutable

Difficulty: Advanced

Related: brotli compressioncache control max agecache control must revalidate

⚡Cache-Control: max-age

Difficulty: Advanced

Related: brotli compressioncache control immutablecache control must revalidate

⚡Cache-Control: must-revalidate

Difficulty: Advanced

Related: cache control immutablecache control max agecache control no cache

⚡Cache-Control: no-cache

Difficulty: Advanced

Related: cache control max agecache control must revalidatecache control no store

⚡Cache-Control: no-store

Difficulty: Advanced

Related: cache control must revalidatecache control no cachecache control private

⚡Cache-Control: private

Difficulty: Advanced

Related: cache control no cachecache control no storecache control proxy revalidate

⚡Cache-Control: proxy-revalidate

Difficulty: Advanced

Related: cache control no storecache control privatecache control public

⚡Cache-Control: public

Difficulty: Advanced

Related: cache control privatecache control proxy revalidatecache control s maxage

⚡Cache-Control: s-maxage

Difficulty: Advanced

Related: cache control proxy revalidatecache control publiccache control stale if error

⚡Cache-Control: stale-if-error

Difficulty: Advanced

Related: cache control publiccache control s maxagecache control stale while revalidate

⚡Cache-Control: stale-while-revalidate

Difficulty: Advanced

Related: cache control s maxagecache control stale if errorcache key normalization

⚡Client Hints

Difficulty: Advanced

Related: cdn edge cachingcdn tiered cachingcls

⚡Code Splitting

Difficulty: Advanced

Related: client hintsclsconnection pooling

⚡Connection Pooling

Difficulty: Advanced

Related: clscode splittingcore web vitals

⚡Core Web Vitals

Also known as: web vitals

Difficulty: Advanced

Related: code splittingconnection poolingcritical css

⚡Critical CSS

Difficulty: Advanced

Related: connection poolingcore web vitalsdefer vs async

⚡DNS Prefetch

Difficulty: Advanced

Related: critical cssdefer vs asyncetag revalidation

⚡Defer vs Async

Difficulty: Advanced

Related: core web vitalscritical cssdns prefetch

⚡Etag Revalidation

Difficulty: Advanced

Related: defer vs asyncdns prefetchgzip compression

⚡Gzip Compression

Difficulty: Advanced

Related: dns prefetchetag revalidationheuristic caching

⚡HTTP/2

Difficulty: Advanced

Related: gzip compressionheuristic cachinghttp 3

⚡HTTP/3

Difficulty: Advanced

Related: heuristic cachinghttp 2inp

⚡Heuristic Caching

Difficulty: Advanced

Related: etag revalidationgzip compressionhttp 2

⚡INP

Difficulty: Advanced

Related: http 2http 3keepalive

⚡Keep‑Alive

Difficulty: Advanced

Related: http 3inplazy hydration

⚡LCP

Difficulty: Advanced

Related: keepalivelazy hydrationorigin shield

⚡Lazy Hydration

Difficulty: Advanced

Related: inpkeepalivelcp

⚡Origin Shield

Difficulty: Advanced

Related: lazy hydrationlcppage speed

⚡Page Speed

Also known as: site speed

Difficulty: Advanced

Related: lcporigin shieldpreconnect

⚡Preconnect

Difficulty: Advanced

Related: origin shieldpage speedpreload

⚡Preload

Difficulty: Advanced

Related: page speedpreconnectpurge cache

⚡Purge Cache

Difficulty: Advanced

Related: preconnectpreloadrenderblocking resources

⚡Render‑Blocking Resources

Difficulty: Advanced

Related: preloadpurge cacheresponsive images

⚡Responsive Images

Difficulty: Advanced

Related: purge cacherenderblocking resourcesserver push deprecated

⚡Server Push (deprecated)

Difficulty: Advanced

Related: renderblocking resourcesresponsive imagesservice worker caching

⚡Service Worker Caching

Difficulty: Advanced

Related: responsive imagesserver push deprecatedsigned urls

⚡Signed URLs

Difficulty: Advanced

Related: server push deprecatedservice worker cachingsite performance

⚡Site Performance

Also known as: website performance

Difficulty: Advanced

Related: service worker cachingsigned urlstime to first byte

⚡TLS Handshake

Difficulty: Advanced

Related: site performancetime to first bytetree shaking

⚡TTFB

Difficulty: Advanced

Related: tls handshaketree shakingvary accept encoding

⚡Time to First Byte

Also known as: TTFB

Difficulty: Advanced

Related: signed urlssite performancetls handshake

⚡Tree Shaking

Difficulty: Advanced

Related: time to first bytetls handshakettfb

⚡Vary: Accept-Encoding

Difficulty: Advanced

Related: tree shakingttfbvary user agent

⚡Vary: User-Agent

Difficulty: Advanced

Related: ttfbvary accept encoding301 redirect