JSON Formatter / Validator / Minifier
Format, validate, and minify JSON content locally.
jsonformatvalidate
Regex Tester Online
Use this regex tester to try patterns quickly, verify matches, and understand how a regular expression behaves before you move it into code.
regextesting
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What this tool does
Use this regex tester to try patterns quickly, verify matches, and understand how a regular expression behaves before you move it into code.
How to use Regex Tester (Live Highlight)
- Open Regex Tester (Live Highlight) and add the input you want to work with.
- Review the result in the workspace as soon as the tool runs.
- Copy, refine, or repeat the process until the output matches what you need.
FAQ
What does Regex Tester (Live Highlight) do?
Test regular expressions and highlight match results live.
Does Regex Tester (Live Highlight) upload my data?
Regex Tester (Live Highlight) runs locally in your browser by default, so Koiloop does not need to upload that input to a server.
Can I use Regex Tester (Live Highlight) with sensitive information?
Regex Tester (Live Highlight) is best for routine work, and Koiloop keeps the experience browser-based whenever possible.
Tool details
Signals that help people understand how this page behaves before they paste real data.
- Runs in your browser by default.
- Best for routine content, reference data, and everyday workflow inputs.
- Works directly with pasted text or typed input.
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