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⏳ Cache-Control Builder
Cache-Control has too many directives that interact in non-obvious ways. This tool lets you pick the behavior you want (static asset, API response, never-cache, etc.) and get the exact header value to paste into your server config.
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Examples
Static asset
Output
Cache-Control: public, max-age=31536000, immutableAPI response
Output
Cache-Control: no-storeFrequently asked questions
no-cache vs no-store?
no-cache lets the cache store the response but requires revalidation before serving it. no-store forbids storing it at all.
About this calculator
Cache-Control Builder runs entirely in your browser using standard formulas. No data is sent to any server. We don't share your inputs with lenders, brokers, or anyone else — there's no funnel and no follow-up email.
Related tools
- 📨 HTTP Headers Reference — Searchable reference of HTTP request and response headers.
- 🔧 HTTP Methods Reference — GET, POST, PUT, DELETE, PATCH, OPTIONS, HEAD — when to use each.
Why this tool
vs typical free network-tools sites
| NetToolset | Typical free site | |
|---|---|---|
| Price | Free | Free |
| Signup required | No | Often (for advanced features) |
| Ads inside the tool | No | Yes (banner + interstitial) |
| Logs your IP / queries | No | Yes (often resold) |
| Data sent to a server | Math runs in browser; lookups hit Cloudflare DoH directly | Yes (all goes through their server) |
| Open source | Yes | No |
| Bookmarkable URL per tool | Yes | Mixed |
| Multilingual | EN / ES / PT / FR / DE | Usually EN only |
| Loads in under 1s | Yes (static) | Often slow (ad tracking) |