When to use regex mode
Regular expressions let you match patterns instead of exact text — for example \d+ matches any run of digits. Whole-word matching prevents "cat" from also matching inside "category".
Find and Replace
Find every occurrence of a word or pattern in your text and replace it in bulk, with optional case-sensitive, whole-word or regex matching.
How it works
- 1
Paste your input into the editor.
- 2
Choose format / mode options if available.
- 3
Copy the transformed output (it usually updates as you edit).
Why use this tool
- Runs entirely in your browser — nothing is uploaded to a server.
- 100% free, no sign-up, no limits.
- Works in any modern browser — no app install, no extension, no account.
How to use Find and Replace
Paste into Find and Replace, tweak options, and copy the output. Formatting and conversion run in the browser for this tool.
Tips for better results
Keep a backup of original input before bulk transforms. Invalid input should show an error instead of silent corruption.
Privacy and offline-friendly processing
Whenever possible, Find and Replace processes your data locally with JavaScript in this page. That means drafts, secrets, and unfinished work stay on your device by default. Prefer this workflow when you do not want to upload sensitive text, tokens, passwords, or files to a third-party service.
Frequently asked questions
Is find and replace case-sensitive by default?
No, matching is case-insensitive by default — enable "case-sensitive" to require an exact case match.
What happens if my regex is invalid?
The tool shows an error message and leaves your text unchanged instead of crashing.
Is my data uploaded when I use this tool?
For most FlyUtils tools, no. Processing happens in your browser with JavaScript. If a tool ever needs a server, that will be stated clearly on the page.
Is Find and Replace free to use?
Yes. Find and Replace is free, with no sign-up and no artificial usage caps for normal personal and work use.
Does Find and Replace work on mobile?
Yes. The page is mobile-first, so you can paste input, tweak options, and copy results from a phone or tablet.