Is the Regex Cheatsheet free to use?

Yes, the Regex Cheatsheet is completely free to use with no hidden limits or subscriptions.

Does the Regex Cheatsheet work offline?

Yes, since SAMAST is a Progressive Web App (PWA) built with client-side technologies, you can use the Regex Cheatsheet offline once the website has loaded in your browser.

Is my data secure when using the Regex Cheatsheet?

Absolutely. All processing for the Regex Cheatsheet happens directly in your browser. Your input data is never sent to any external server, ensuring complete privacy and security.

Regex Cheatsheet

Name: Regex Cheatsheet
Author: SAMAST

Quick reference for Regular Expression syntax and patterns.

Character Classes

.

Any character except newline

\w

Word character [a-zA-Z0-9_]

\d

Digit [0-9]

\s

Whitespace (space, tab, newline)

\W, \D, \S

Not word, not digit, not whitespace

Quantifiers

*

0 or more times

+

1 or more times

?

0 or 1 time (optional)

{n}

Exactly n times

{n,m}

Between n and m times

Anchors

^

Start of string (or line in multiline mode)

$

End of string (or line in multiline mode)

\b

Word boundary

\B

Not a word boundary

Groups & Lookarounds

(abc)

Capture group

(?:abc)

Non-capturing group

(?=abc)

Positive lookahead

(?!abc)

Negative lookahead

[abc]

Any of a, b, or c

[^abc]

Not a, b, or c

About Regex Cheatsheet

The Regex Cheatsheet tool allows you to regex syntax reference quickly and securely. Like all SAMAST utilities, it runs entirely in your browser. This means your data is never uploaded to any external servers, ensuring complete privacy and fast execution.

Our Regex Cheatsheet runs securely on your device. Unlike server-side converters, this means zero upload time, instant results, and guaranteed privacy. Bookmark this page or press Ctrl+K to access it anytime.

Key Features

100% Client-Side

All Regex Cheatsheet operations happen directly in your browser. No data is ever uploaded to our servers.

Lightning Fast

Secure & Private

Since nothing leaves your device, your sensitive data remains completely secure at all times.

Free & Unrestricted

Use the tool as much as you want without any hidden limits, paywalls, or subscriptions.

How to use Regex Cheatsheet

Load the Tool

Open the Regex Cheatsheet utility in your browser. The tool works seamlessly on desktop and mobile.

Input Your Data

Provide the necessary input or select the files you wish to process with the Regex Cheatsheet.

Instant Processing

Our client-side engine will instantly execute the regex syntax reference operation.

Get Results

Instantly view or download your processed results. Everything stays on your device.

Benefits of SAMAST

No registration or account required.
Works perfectly offline once loaded.
Zero risk of data interception or leaks.
Optimized for high performance on any device.
Clean, ad-free interface designed for productivity.

Who is this for?

Developers needing a quick, reliable Regex Cheatsheet without exposing code.
Professionals handling sensitive documents that cannot leave their network.
Students and educators looking for a free, fast regex syntax reference solution.
Anyone who values digital privacy and efficiency.