# Regex Tester

URL: https://pdfflare.com/tools/dev/regex-tester
Category: Developer Tools

Free regex tester online — paste a regex, get live match highlighting plus code for 10 languages (JS, Python, Go, Java, Ruby). 40+ pattern presets.

## What it does

Regex Tester Online — 40+ Presets, Multi-Language. Test regex with live highlighting.

Runs entirely in your browser. No file ever uploads to a server unless the tool explicitly requires server-side processing (LibreOffice for Office formats, Ghostscript for PDF compression). Free to use, no signup, no rate limits.

## Common search queries this tool answers

- regex tester online
- regex tester
- javascript regex tester
- regex101 alternative
- regex pattern library
- multi-language regex converter
- regex cheat sheet
- regex match online

## How to use it

1. Open https://pdfflare.com/tools/dev/regex-tester
2. Follow the on-page instructions for regex tester
3. Your result is generated locally in the browser

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## About PDFFlare

PDFFlare is a free collection of online tools for working with PDFs, images, text, JSON, and developer utilities. All tools run client-side in your browser — no signup, no upload to our servers, no rate limits.

For the full site index, see https://pdfflare.com/llms.txt.
For the complete content dump in one file, see https://pdfflare.com/llms-full.txt.