Code Generators

Regex Pattern Generator

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<iframe src="https://www.browserutils.dev/embed/regex-generator/" width="100%" height="500" frameborder="0" loading="lazy" title="Regex Pattern Generator"></iframe>
<p style="font-size:12px;margin:4px 0 0"><a href="https://www.browserutils.dev/tools/regex-generator/">Regex Pattern Generator</a> by BrowserUtils</p>

Build regex patterns from common presets.Runs in this tab.

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How to use Regex Pattern Generator

  1. Paste or type your input into the editor above.
  2. The tool processes your data instantly — right in your browser, with nothing sent to a server.
  3. Copy the result with one click or continue editing your input.

About Regex Pattern Generator

Regex Pattern Generator is a free online tool from BrowserUtils that build regex patterns from common presets. It runs entirely in your browser — your data never leaves your device. No account required.

Free online regex pattern generator. Choose from common regex patterns for email, URL, phone, IP, date, and more. Test patterns against your input in real time. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.

Regex Pattern Generator specs

Runtime
100% client-side (browser)
Cost
Free — no account, no rate limits, no usage caps
Browser support
Chrome 90+, Firefox 88+, Safari 14+, Edge 90+
Last updated
March 21, 2026
Part of
299 developer tools on BrowserUtils (100% client-side)

Questions

How do I generate a regex pattern?
Select a common pattern preset (email, URL, phone, IP, date, etc.) or enter a custom pattern. Test it against your input text to see matches highlighted in real time.
What regex presets are available?
Presets include email address, URL, US and international phone numbers, IPv4 and IPv6, dates (ISO and US format), time, hex color, UUID, credit card, ZIP code, HTML tags, slugs, and strong passwords.
Is the regex generator safe for testing patterns with real data?
Yes, all pattern matching runs in your browser. No input text or patterns are sent to any server, so you can test against real data without privacy concerns.
Does the regex generator work with JavaScript, Python, and other languages?
The generated patterns use standard regex syntax that works in JavaScript, Python, PHP, Java, and most other languages. Minor differences in engine features (like lookbehind support) may apply.
Can I customize the generated regex pattern?
Yes, start with a preset and then edit the pattern directly. The real-time tester highlights matches as you modify, so you can fine-tune the expression for your exact use case.

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