Set-Cookie Header Generator
Build a secure Set-Cookie header with all attributes — plus matching JS and Express code.
Runs 100% in your browser — nothing is ever uploaded.
What is Set-Cookie Generator?
This free Set-Cookie generator builds a complete, secure cookie header from a simple form. Set the name, value, Max-Age, Path and Domain, then toggle the Secure, HttpOnly and SameSite attributes that protect against session theft and CSRF. You get three outputs at once: the raw Set-Cookie response header, a document.cookie JavaScript line, and an Express res.cookie() call — all generated locally in your browser.
How to use Set-Cookie Generator
- Open the tool — no signup, no upload, everything runs in your browser.
- Fill in the cookie options in the form; sensible defaults are pre-selected.
- The Set-Cookie 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 Set-Cookie generator free to use?
Yes — this Set-Cookie generator is completely free with no signup, no limits, and no watermarks. Use it as often as you like.
When should SameSite be None, Lax or Strict?
Lax is the modern default and fine for most sites. Strict blocks the cookie on all cross-site navigation, ideal for high-security actions. None allows cross-site usage (embedded widgets, third-party contexts) but requires the Secure flag or browsers will reject it.
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.