Cache-Control Header Generator
Get the right Cache-Control header for every asset type — presets included, no guesswork.
Runs 100% in your browser — nothing is ever uploaded.
What is Cache-Control Generator?
This free Cache-Control generator gives you correct caching headers without digging through RFC 9111. Choose a preset — immutable static assets, always-revalidated HTML, API responses, private user data or never-cache — or build a custom policy with max-age and stale-while-revalidate. The header is output as raw HTTP, Nginx, Apache or an Express one-liner, generated entirely in your browser.
How to use Cache-Control Generator
- Open the tool — no signup, no upload, everything runs in your browser.
- Fill in the caching options in the form; sensible defaults are pre-selected.
- The Cache-Control output updates instantly with every change you make.
- Copy the result or download it as a ready-to-use file.
Frequently asked questions
Is this Cache-Control generator free to use?
Yes — this Cache-Control generator is completely free with no signup, no limits, and no watermarks. Use it as often as you like.
What does 'immutable' do in Cache-Control?
'immutable' tells the browser the file will never change during its max-age, so it skips revalidation requests entirely — even on page refresh. Use it only for fingerprinted assets like app.a1b2c3.js whose URL changes on every deploy.
Is my configuration data private?
Absolutely. Everything is generated locally in your browser with JavaScript — no data, settings, or file contents are ever sent to any server.
Do these tools touch my servers?
No. OpsForge tools are pure calculators and generators that run in your browser — they never connect to your infrastructure. You copy the result and apply it yourself.
Is the chmod calculator accurate for all systems?
Yes — octal permission notation is a POSIX standard, so the results apply identically on Linux, macOS and BSD.
Will more DevOps tools be added?
Yes — Dockerfile, docker-compose, nginx and CI config generators are on the roadmap. Everything will stay free and client-side.