Generate Cache-Control directives with configurable max-age, scope, must-revalidate, and no-transform options. Code never leaves your device — formatting and validation run locally in your browser.
Content reviewed October 2026 · About Toolzum
Generate CSS border-radius values visually. Control each corner independently with live preview. Code never leaves your device — formatting and validation run locally in your browser.
Build a Content Security Policy header by selecting directives and allowed sources. Code never leaves your device — formatting and validation run locally in your browser.
Generate .env file templates with configurable variable names and default values. Code never leaves your device — formatting and validation run locally in your browser.
Reduces MP4, MOV, and WebM video file sizes with a configurable CRF 20–40 slider (default 28, libx264 fast preset), plus a GIF mode with color-palette control. Videos never leave your device — compression runs locally in your browser with FFmpeg WASM.
Generate invisible Unicode characters and blank text for bios, usernames, and formatting tricks. Post empty messages anywhere — free, local, copy-paste ready.
Cache-Control, ETag, Expires, and Last-Modified in coherent combinations.
Immutable assets get a year; HTML gets revalidation, not caching.
Standard directives every CDN honors, battle-tested across providers.
No — generation runs locally in your browser, free with no signup.
HTTP Header Analyzer
Analyze HTTP request and response headers — detect security headers, review formatting, and inspect value structure. Code never leaves your device — formatting and validation run locally in your browser.
HTTP Retry Policy Builder
Build HTTP retry policies with exponential backoff, fixed delay, or circuit breaker strategies for resilient API clients. Code never leaves your device — formatting and validation run locally in your browser.