Regex Tester — Free Online Tool
Test regular expressions with live match highlights
How to use Regex Tester
- Open the tool above and enter your input or upload your file.
- Adjust any options (e.g. quality, format, or size) if needed.
- Copy the result or download the generated file — no signup required.
About Regex Tester
Regex Tester is a free online tool built by CodexStudio for developers, designers, and anyone who needs to get things done quickly. Whether you're compressing images for the web, merging PDFs for a client, counting words for an article, or generating a strong password, our tools run entirely in your browser. That means no uploads to our servers, no account required, and no data stored. We built these tools because we use them ourselves every day — and we wanted to offer the same convenience to our visitors.
Test regular expressions with live match highlights Our developer tools are designed to be fast and straightforward. You won't find paywalls or signup forms here. Just open the tool, do your work, and download or copy your result. We hope Regex Tester saves you time and helps you focus on what matters. If you need a custom tool or a full website built for your business, get in touch — we'd love to help.
CodexStudio is a web development agency based in Islamabad, Pakistan. We build modern websites, web applications, and e-commerce stores for clients around the world. Our free online tools are one way we give back to the community and showcase what we can do with the web platform.
Frequently asked questions
Is Regex Tester really free?▼
Yes. Regex Tester is free to use with no signup. All processing runs in your browser, so your data never leaves your device.
Do I need to create an account to use Regex Tester?▼
No account is required. Open the tool, use it, and download or copy your results. We don't store your files or input.
Can I use Regex Tester on my phone?▼
Yes. Our tools are responsive and work on desktop, tablet, and mobile browsers.
Is my data secure when using Regex Tester?▼
Yes. This tool runs entirely in your browser (client-side). Your files and text are not uploaded to our servers.
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