Regex Tester & Validator
Test regular expression (regex) patterns interactively, see matches and capture groups, and quickly validate whether your regex works as expected.
Usage note: Processing happens directly in your browser; your data is not sent to our servers. Avoid entering sensitive, personal, or illegal content. Privacy Policy and Terms for more details.
giNote
This tool uses JavaScript RegExp, so the syntax follows modern JavaScript (ECMAScript).
Results & Matches
2 match(es) foundFlags summary
gGlobal: Match all occurrences, not just the first one.iIgnore case: Case-insensitive matching.mMultiline: ^ and $ apply to each line, not just the whole string.sDot all: The dot (.) also matches newline characters.uUnicode: Enable full Unicode mode.ySticky: Match starting from the current index only.
🧪 Regex playground for developers & QAFree, runs entirely in your browser
What is the Regex Tester from SONO-Solutions?
The Regex Tester & Validator from SONO-Solutions is an online tool for testing and validating regular expressions (regex) interactively. You can see matches, capture groups, and adjust patterns without running your code.
When is a regex tester useful?
- • When building validation patterns for emails, phone numbers, or URLs.
- • When extracting specific parts of a string (usernames, domains, IDs).
- • When debugging a regex that doesn't behave as expected.
- • When teaching or learning new regex patterns and techniques.
Features of the SONO-Solutions Regex Tester
- • Highlights matches directly in the test text.
- • Displays capture groups clearly.
- • Supports common flags like
g,i,m. - • Runs entirely in your browser, no server-side execution.
- • Completely free, no sign-up, no usage caps for normal use.
How to use the Regex Tester
- 1. Write or paste the regex pattern you want to test.
- 2. Provide a sample text to match against.
- 3. Toggle flags like global, case-insensitive, or multiline as needed.
- 4. Inspect highlighted matches and capture groups.
- 5. Refine your pattern until it matches the exact cases you care about.
This workflow helps you build accurate patterns before integrating them into backend validation, frontend forms, or data processing scripts.
Common regex examples
- • Simple email:
^[^\s@]+@[^\s@]+\.[^\s@]+$ - • Digits only:
^\d+$ - • Simple URL:
^https?:\/\/[^\s/$.?#].[^\s]*$ - • Capture text inside parentheses:
\((.*?)\)
Frequently asked questions about the Regex Tester
Is the Regex Tester free to use?
Yes. The Regex Tester and all tools on SONO-Solutions are free to use directly in your browser — no account, no subscription, and no paywall.
Is my test data sent to a server?
No. All regex execution happens locally in your browser using JavaScript. Your patterns and sample text are not uploaded to or stored on SONO-Solutions servers.
Quick Guide
Use the tool or form on this page when you need to complete the task described at the top. If you are unsure whether this is the right tool, check the short description and the examples below to confirm it delivers the output you need.
How to Use
- Read the tool description to understand its main function and limits.
- Provide the requested input (text, file, or selection) following the examples.
- Hit the primary action button above (e.g., Generate/Convert/Analyze).
- Review the output; iterate with adjustments if necessary.
- Use copy/download buttons when available to save the result.
Sample Input & Output
- Input: raw text, a URL, or a file as instructed above.
- Output: formatted content, a new file, or a visual preview ready to use.
- Check any notes on the page for size or data-type limits.
Quick FAQ
- What should I do if the result looks wrong? Try a different example input, clean up the formatting (remove extra characters), and run it again.
- Is this tool free to use? Yes, the main features are available without signing up.
- Can I use it on mobile? Most tools are optimized for smaller screens.
Security & Privacy
Most processing happens in your browser, so data is not sent to the server unless explicitly noted on the page. Avoid entering sensitive or confidential information, and clear results after use if the device is shared.