Cookie Generator

What is Cookie Generator?

Cookie Generator is a free, browser-based tool that helps you produce ready-to-use output in seconds. Build Set-Cookie header strings. It's built for speed and privacy: Everything runs locally in your browser — your data is never uploaded to a server. No sign-up, no installs, and no daily limits.

Used by

• Backend developers
• API testers
• QA engineers
• Integration teams
• Developers
• Test-data teams

Recommended workflow

1. 1

   Prepare the input

   Generate a sample or helper artifact, then copy it into the workflow that needs it.

2. 2

   Run Cookie Generator

   Review the preview, copy or download the result, and keep everything local in your browser.

3. 3

   Next recommended tool

   Cookie Parser: Parse Set-Cookie and Cookie header strings.

   Open tool
4. 4

   Then continue with

   HTTP Header Analyzer: Grade security headers, explain every header, and simulate CORS preflight.

   Open tool
5. 5

   Then continue with

   API Field Mapper: Map fields between two API shapes.

   Open tool

Frequently asked questions

How do I use Cookie Generator?

Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Build Set-Cookie header strings.

Is my data uploaded or stored anywhere?

No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.

Is Cookie Generator free?

Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.

What's the maximum file size?

There's no hard limit imposed by the tool. Because processing happens in your browser, the practical ceiling is your device's available memory — most everyday files work instantly.

Do I need to install anything?

No installs and no extensions — it runs entirely in your web browser and even works offline once the page has loaded.