# Regex Replace Tester

Preview regex find-and-replace results with capture group references and live highlighting.

## URL

https://ilham.dev/tools/regex-replace-tester/

## What It Does

Test a find-and-replace before running it. Enter a pattern, flags, a replacement string (with $1 group references) and sample text; the preview highlights matches and the result box shows the output.

## Features

- Runs in the browser
- No login required

## Input

text input.

## Output

text output.

## Privacy

Processing happens locally in the browser.

No input data is uploaded to ilham.dev.

- Requires login: false
- Requires API key: false
- Stores user data: false


## Examples

- Why do I get no replacements with a non-global flag?




## Questions

### Why do I get no replacements with a non-global flag?

Without `g`, only the **first** match is replaced. If you see none, check that the pattern matches the example text and does not have an invalid flag.