RegexLab is a curated, production-ready collection of Regular Expressions designed for developers. Search, explore, and test patterns for validation, parsing, sanitization, matching, and formatting — all in one clean interface.
🔗 Live Demo: https://regexlab.sagarsaini.com
👉 Author: Sagar Saini
A hand-picked collection of battle-tested regex patterns used across real-world projects.
Every pattern includes a built-in test area. Type sample input → instantly see matches, groups, and validation results.
Patterns are grouped into logical categories such as:
- Emails
- URLs & Domains
- Passwords
- Numbers
- Dates
- Phone Numbers
- Input Sanitization
- Formatting / Parsing
And more…
A minimal design focused on clarity and speed.
No distractions — just patterns, examples, and testing.
Works seamlessly on desktop, tablet, or mobile.
Regular expressions are powerful but hard to remember.
RegexLab solves that by giving developers a reliable, production-ready dictionary of patterns you can drop into:
- Web apps
- Mobile apps
- CLI tools
- Validation pipelines
- Data cleaning scripts
- Backend services
No more searching random StackOverflow threads or blog posts.
RegexLab is built using:
- React
- Vite
- Tailwind CSS
- Lucide Icons
- Vanilla RegExp Engine (no dependencies)
git clone https://github.com/<your-username>/regexlab.git
cd regexlab
npm install
npm run devVisit: http://localhost:5173
RegexLab does not store or transmit any input or data.
Your testing happens completely in your browser.
Contributions are welcome!
You can add new regex patterns, improve descriptions, or enhance UI/UX.
- Fork the repo
- Create a feature branch
- Submit a PR
If RegexLab helped you debug, validate, or write a regex faster…
Consider starring the repo!
It helps the project reach more developers.