What does User-Agent Parse do that other Network pages on this site do not?

Heuristic UA parse. Not a full UA parser database. Short version: Guess browser family, version, OS, and mobile.

Does User-Agent Parse upload my file or text to Tool-You servers?

No. User-Agent Parse runs in this browser tab. Files stay on the device. Limit note: Pattern heuristics only. Version from common tokens.

Should I use HTTP Status Phrase instead of User-Agent Parse?

Use User-Agent Parse when you need Guess browser family, version, OS, and mobile. Use HTTP Status Phrase when you need HTTP status phrase and class (1xx–5xx). They share a category (Network) but not the same job.

What are the limits of User-Agent Parse?

Pattern heuristics only. Version from common tokens. Also: Heuristic UA parse. Not a full UA parser database.

User-Agent Parse

Guess browser family, version, OS, and mobile.

Heuristic UA parse. Not a full UA parser database.

What User-Agent Parse does

Heuristic UA parse. Not a full UA parser database.

The interactive controls for User-Agent Parse load after this article so crawlers still read the instructions. Path /network/user-agent is the canonical address. Work happens on this device; Tool-You does not take a copy of the file or pasted text for User-Agent Parse.

How to use User-Agent Parse

Keep this tab on User-Agent Parse (/network/user-agent). Pasting into the wrong Network tool (for example HTTP Status Phrase) changes the job.
Paste or type the input User-Agent Parse expects. Path hint: network · user agent. Guess browser family, version, OS, and mobile.
Apply the User-Agent Parse action only. Regex Tester is a different transform (Test or replace with a JavaScript regex locally.). Heuristic UA parse. Not a full UA parser database.
Copy the output of User-Agent Parse if you need it elsewhere. Size/complexity still follows: Pattern heuristics only. Version from common tokens.
If the text job is actually HTTP status phrase and class (1xx–5xx)., leave User-Agent Parse and open HTTP Status Phrase.

When not to use User-Agent Parse

Skip User-Agent Parse when a neighbor tool matches better — start with HTTP Status Phrase or Regex Tester — or when the description already warns the job will fail. In the tool’s own words: Heuristic UA parse. Not a full UA parser database.

Questions about User-Agent Parse

What does User-Agent Parse do that other Network pages on this site do not?: Heuristic UA parse. Not a full UA parser database. Short version: Guess browser family, version, OS, and mobile.
Does User-Agent Parse upload my file or text to Tool-You servers?: No. User-Agent Parse runs in this browser tab. Files stay on the device. Limit note: Pattern heuristics only. Version from common tokens.
Should I use HTTP Status Phrase instead of User-Agent Parse?: Use User-Agent Parse when you need Guess browser family, version, OS, and mobile. Use HTTP Status Phrase when you need HTTP status phrase and class (1xx–5xx). They share a category (Network) but not the same job.
What are the limits of User-Agent Parse?: Pattern heuristics only. Version from common tokens. Also: Heuristic UA parse. Not a full UA parser database.