CORS Headers Generator
Generate CORS configuration as raw response headers or Express / Hono middleware.
About CORS Headers Generator
CORS Headers Generator is a free popular platforms tool that lets you build a correct config in clicks instead of digging through docs — no guesswork, no docs. Copy the config and paste it straight into your platform of choice. It runs entirely in your browser with no sign-up and no installs, so your data stays private.
How to use CORS Headers Generator
- 1Open CORS Headers Generator — it loads instantly and runs entirely in your browser.
- 2Fill in the fields with your own values; the output updates live as you type.
- 3Review the generated config in the preview area.
- 4Copy the config and paste it straight into your platform of choice.
Why use CORS Headers Generator?
- ✓Generates a valid config in seconds — no copy-pasting from docs
- ✓100% client-side: your inputs never leave your browser
- ✓Free and unlimited — no account, no trial, no credit card
- ✓Works on desktop and mobile; copy or download the config instantly
Frequently asked questions
Is CORS Headers Generator free?+
Yes. CORS Headers Generator is completely free with no account, no trial and no usage limits. ToolJolt is supported by unobtrusive ads, not paywalls.
Where do I paste the output from CORS Headers Generator?+
Click Copy, then paste the config into your platform of choice. Each tool's preview shows exactly what to add and where, so you can drop it in and save without reading the docs.
Is my data private?+
Completely. CORS Headers Generator runs 100% in your browser (client-side). Nothing you type is uploaded to a server, so your data stays on your device.
Do I need to sign up or install anything?+
No. There's nothing to install and no sign-up — just open the page and start. It works on desktop and mobile.
Can I use the output commercially?+
Yes. The configuration, code or files you generate are yours to use in personal and commercial projects without attribution.
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