User-Agent generator

User-Agent generator for scrapers: Chrome, Firefox, Safari

The strings follow the same templates as real browsers, and versions follow the release schedule. Pick browsers and systems, and the list is ready for rotation in your scraper.

Browsers Chrome Firefox Safari Edge

How many strings Versions Format

A carousel of browser windows for User-Agent rotation

How the strings are built

Since 2022 Chrome and Edge trim the User-Agent: the version ends in zeros, like 140.0.0.0, Windows 11 looks like Windows NT 10.0 and Android always shows version 10. The generator follows these rules, so the strings blend into site logs.

Safari on iPhone reports iOS 18_6 in the string since version 26 and shows the real number only in Version. Firefox ships a new version every four weeks, and so does Chrome.

When it helps

User-Agent rotation in a scraper so requests do not share one string.
Setting up antidetect browser profiles for different systems.
Testing how a site answers mobile and desktop browsers.
Replacing stale strings like Chrome 90 in old scripts.

Questions and answers

01Is changing the User-Agent enough?

No. Sites compare the string with the sec-ch-ua headers, the language and the browser fingerprint. If the string says Windows and the headers say macOS, it shows. Check the combination on the anonymity check page.

02Where do the versions come from?

Chrome and Firefox ship every four weeks, Safari once a year with point releases in between. The generator works out the current version from that schedule for today.

03Do the strings go to your server?

No. The list is built in your browser.

04How many User-Agent strings does a scraper need?

A few fresh strings from one or two browsers are enough. Hundreds of random strings hurt: rare versions and exotic systems stand out among ordinary visitors.

05Should I change the User-Agent on every request?

No. Keep one string per session or per IP: a real browser does not change its version between pages. A new string with the same IP and cookies looks suspicious.