Browsers/firefox
Mozilla

Firefox

Firefox is a free and open-source web browser developed by the Mozilla Foundation.

Jan 2015
first seen in our archive
137K
distinct User-Agents
11M+
requests seen

Official: www.mozilla.org/firefox/·Vendor: Mozilla

Parse it

Send the User-Agent to the API, device, OS, browser, and bot detection come back in one response.

curl -s "https://api.parseapi.com/useragent" \
  -H "User-Agent: mozilla/5.0 (windows nt 6.1; rv:52.0) gecko/20100101 firefox/52.0" \
  -H "X-Api-Key: $PARSEAPI_KEY"
Create a free keyUseragent API

Example User-Agents

Real strings from our archive that resolve to Firefox. Each opens a full breakdown.