Back to Tools

Regex Tester

Test and validate regular expressions in real-time

Drag & drop a text file

What is Regex Tester?

Use our free online Regex Tester for software development and web programming tasks. This tool runs entirely in your browser with no data uploaded to any server, ensuring your privacy and security. Fast, free, and requires no installation or signup. Part of PKTools' collection of 100+ free online tools for developers, designers, and everyday users.

How to Use Regex Tester

1

Open the Regex Tester tool on PKTools.

2

Enter your input data in the provided field.

3

Configure any options or settings as needed.

4

Click the action button and copy or download the result.

Key Features

Free to use with no limits or signup required
100% client-side processing - your data stays private
Works on all devices (desktop, tablet, mobile)
Fast, instant results
Clean, intuitive user interface

Frequently Asked Questions

Is the Regex Tester tool free?

Yes, completely free with no usage limits, no signup required, and no premium features locked behind a paywall. All PKTools are free forever.

Is my data safe when using this tool?

Absolutely. All processing happens directly in your browser using JavaScript. No data is ever sent to our servers. Your information stays completely private on your device.

Does this tool work on mobile devices?

Yes, the Regex Tester is fully responsive and works on smartphones, tablets, laptops, and desktops across all modern browsers including Chrome, Firefox, Safari, and Edge.