What's the difference between Personal and Studio?

Personal ($39) is for one person — unlimited use on one active device at a time. Activate on a new device and the old one signs out. Studio ($199) is for teams and commercial client work — unlimited team members, early access to new tools, and a commercial license.

Do I need an account?

No. Use any tool free up to 5 times per day on compute-heavier tools, and unlimited on lightweight ones. No card, no account, no signup required.

Where are my files processed?

Right on your device. Files never upload to any server. Everything runs in your browser — you can verify in DevTools → Network.

What happens if I use my Personal license on a second device?

The new device activates and the old device signs out. Your license key stays the same — you just move it between devices as needed. No limit on how often you switch.

Does this work on my phone?

Yes. Every tool works on iPhone, Android, tablet, and desktop.

What if I want a refund?

30-day money-back guarantee on both tiers. No questions asked. Email sales@cipherforces.com.

Will you add more tools?

Yes. New tools ship regularly. Your license includes every tool we ever release — Studio members get early access.

DevFree

Test Regex

Write and test regular expressions with live matching.

PrivateWorks OfflineNo Account

100% Private Works Offline Instant

Flavor

Pattern

Test String

Deep dive

About Test Regex.

Test JavaScript Regular Expressions Live

Write a regex, paste test text, and CipherForces highlights every match in real-time. See capture groups, named groups, and all standard flags (g, i, m, s, u, y). Generate substitution previews with the replace function. Runs entirely in your browser.

Common Use Cases

Build a validator: Test an email / URL / phone-number regex before shipping it.
Log parsing: Craft a pattern to extract timestamps from application logs.
Code migration: Test a find-and-replace regex before running it across a codebase.
Data cleaning: Strip unwanted characters from a CSV column.

Key Features

Live highlighting: Matches update as you type.
Capture group breakdown: See each $1, $2, $3 match separately.
Named group support: (?<year>\\d{4}) displays with its name.
Replace preview: See the output before running the substitution.
Common-pattern library: One-click patterns for email, URL, phone, UUID, IP, date.

Privacy: Regex evaluation uses the browser's native engine. Nothing is transmitted.

Three steps

How to use Test Regex.

Upload your file

Drag and drop or click to select your file.

Choose settings

Adjust quality, size, or format options.

Download result

Your processed file is ready instantly.

Related dev tools.

View all

Format JSON

Paste messy JSON and get it beautifully formatted.

Open tool

Encode / Decode Base64

Convert text or files to and from Base64.

Open tool

Generate UUID

Create unique IDs instantly.

Open tool

Convert Colors

Convert between HEX, RGB, HSL, and CMYK.

Open tool

Why CipherForces

Privacy-first tools that work everywhere.

100% Private

From $39

Works Offline

No Account

83 Tools

Need more than a tool?

Custom web apps and dashboards, from $2,500 one-time.

Web Development Free quote

Explore all 83 tools

About Test Regex.

Test JavaScript Regular Expressions Live

Common Use Cases

Build a validator: Test an email / URL / phone-number regex before shipping it.
Log parsing: Craft a pattern to extract timestamps from application logs.
Code migration: Test a find-and-replace regex before running it across a codebase.
Data cleaning: Strip unwanted characters from a CSV column.

Key Features

Live highlighting: Matches update as you type.
Capture group breakdown: See each $1, $2, $3 match separately.
Named group support: (?<year>\\d{4}) displays with its name.
Replace preview: See the output before running the substitution.
Common-pattern library: One-click patterns for email, URL, phone, UUID, IP, date.

Privacy: Regex evaluation uses the browser's native engine. Nothing is transmitted.