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Most Popular Tools

The most frequently bookmarked tools by our users

Image Compressor

Compress JPG, PNG, and WebP images by up to 80% without losing quality.
Merge PDF

Combine multiple PDF files into one clean document instantly.
Word Counter

Count words, characters, sentences, paragraphs, and reading time in real time.
JSON Formatter

Format, validate, beautify, and minify raw JSON string inputs.
Password Generator

Generate secure, cryptographically random passwords with custom symbols.
QR Code Generator

Create custom QR codes for URLs, text, Wi-Fi, and contact details.
JPG to PDF

Convert JPG and PNG images into a clean single PDF file.
Case Converter

Convert text to UPPERCASE, lowercase, Title Case, camelCase, and snake_case.
Base64 Encoder

Encode text or images into standard Base64 format strings.
Percentage Calculator

Calculate percentage of values, percentage differences, and changes easily.
Color Picker

Pick colors from screen or image and export HEX, RGB, and HSL formats.
SERP Preview Tool

Simulate how your meta title and description appear in Google search results.

Why Choose TinyToolzz?

Built from the ground up for radical speed, privacy, and simplicity

Privacy First
Your files never leave your device. All processing occurs 100% locally in your web browser.
Lightning Fast
No server uploads or queues. Execution starts instantly and returns results in milliseconds.
Truly Free
No subscription tiers, daily task limits, or hidden paywalls. 100% free forever for everyone.
Works on Any Device
Fully optimized for smartphones, tablets, laptops, and desktop viewports.
150+ Tools
A complete utility suite for images, PDFs, developer tasks, text, calculators, and converters.
No Dark Patterns
No artificial processing delays, fake progress bars, or deceptive sign-up pop-ups.

Frequently Asked Questions

Everything you need to know about using TinyToolzz

What is TinyToolzz?
TinyToolzz is a browser-based suite of online utilities for images, PDFs, text, developer code, calculators, and unit converters. Every tool runs directly inside your web browser.
Are all tools on TinyToolzz free?
Yes. All tools on TinyToolzz are 100% free with no premium plans, hidden subscriptions, or daily limits.
Do I need to create an account?
No. You never need to sign up, provide an email address, or log in to use any tool on TinyToolzz.
Is my data safe? Do files get uploaded to a server?
Your files and text inputs are completely private. All processing is performed client-side using JavaScript and Web APIs. Zero file data is ever transmitted to external servers.
Do the tools work on mobile devices?
Yes! TinyToolzz is designed mobile-first and works seamlessly across iOS Safari, Android Chrome, mobile browsers, tablets, and desktop computers.

Bookmark TinyToolzz for Later

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Regex Tester

Test and debug regular expressions online for free. Evaluate regex patterns against sample text in real time with flag controls, match highlighting, and group extraction.

/ /
Test String Input
Highlighted Matches 0 matches
Extracted Matches & Capturing Groups
# Match Index Full Match Groups
No matches found yet.

Technical Specifications

Regex Engine Native JavaScript V8 / ECMAScript RegExp Engine
Supported Flags g (global), i (ignore case), m (multiline), s (dot all), u (unicode)
Features Capturing groups, non-capturing groups, lookaheads, lookbehinds, quantifiers
Execution Context 100% Client-side JavaScript (browser thread)
Privacy Guarantee Zero network requests — test strings never leave client device memory

Key Features

Real-Time Evaluation
See regex matches highlighted live as you type or modify your regular expression pattern.
100% Private & Safe
All regex matching runs locally inside your web browser. Your test strings are never sent to external servers.
Group Extraction Table
Inspect exact index positions, full match values, and captured subgroup values in a clean tabular list.
Instant Syntax Checking
Receive clear error alerts whenever an invalid regular expression character sequence or unclosed bracket is entered.

How to Test Regular Expressions

  1. 1
    Enter Regex Pattern
    Type your regular expression into the pattern field between the slashes, or click "Load Email Sample".
  2. 2
    Configure Search Flags
    Toggle flags such as Global search (g), Case-insensitive (i), or Multiline (m) to control match behavior.
  3. 3
    Inspect Matches & Groups
    View highlighted matches in the preview window and review extracted capturing groups in the results table below.
Client-Side Privacy Guarantee
All regular expression evaluation logic runs strictly inside your local browser memory. Your test strings, log files, and pattern definitions are never uploaded or stored on external servers.

Frequently Asked Questions

What is a Regular Expression (Regex) tester?

A Regular Expression tester allows developers to test, evaluate, and debug regex patterns against sample text in real time. It highlights matches and extracts captured groups instantly.

What regex flags are supported by this tool?

The tool supports standard JavaScript regex flags including global search (g), case-insensitive matching (i), multiline mode (m), dot-all mode (s), and unicode support (u).

How are regex syntax errors displayed?

If you enter an invalid regular expression pattern (such as an unclosed bracket or quantifier error), an error message displays the exact JavaScript syntax error details.

Does the regex tester execute code or send data to servers?

No. All regular expression matching is evaluated using JavaScript's native RegExp object inside your local web browser. Your test strings and pattern expressions are never sent to external servers.

Can I extract capturing groups with this tool?

Yes. For every matched occurrence, the results panel lists the full matched string along with indexed capturing group values (Group 1, Group 2, etc.).

Is this regex tester free to use?

Yes. The Regex Tester is 100% free with unlimited pattern testing and zero registration requirements.

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