{ } How to use

Paste your text and fill in Find and Replace.
Turn on Regex for a pattern, or Ignore case to match either way, then select Process.

{ } How it works

Find and Replace works on the text you provide. Adjust the options, then select Process ▸ and it runs entirely in your browser — nothing is uploaded to a server — then shows the result in the Output panel.

Inputs

Text input — paste or type your input in the left panel (use Sample for an example)
Find — a value (default: "cat")
Replace — a value (default: "dog")
Regex — on/off toggle (default: off)
Ignore case — on/off toggle (default: off)

Output

TXT text — copy or download it from the Output panel.

{ } Common uses

Rename something everywhere in a block of text at once.
Strip or reshape a repeated pattern with a regular expression.
Fix a consistent typo across a pasted document.

{ } Limitations

Every match is replaced — there is no replace-once. An empty Find returns the text unchanged.
With Regex off the search text is taken literally, so . * and ? match themselves. With Regex on, an invalid pattern is reported rather than applied.

{ } FAQ

Is my data uploaded to a server?

No. Everything runs locally in your browser — your files never leave your device.

Can I process more than one file at once?

This tool works on one input at a time.

Is this tool free?

Yes — it’s completely free and needs no sign-up.

How do I delete something instead of replacing it?

Leave Replace empty. Every match is removed.