Are these tools completely free?

Yes — every tool on Powertoys.Online is free with no hidden costs or paywalls. The site is supported by advertising. You do not need to create an account or provide any personal information to use any tool.

Do the tools upload or store my data?

No. All tools run entirely in your browser using client-side JavaScript. Your files, text, and inputs never leave your device and are never transmitted to any server. This makes Powertoys.Online safe to use with sensitive or confidential content.

What tools are currently available?

The collection includes a GUID / UUID generator , Base64 encoder and decoder , JSON data compare , JSON schema compare , password generator , ASCII table reference , number base converter , word counter , fixed-length file viewer , Excel to CSV converter , JPG and PNG to PDF converter , color picker , color converter , emoji copy , unit converters for length , weight , temperature , and time , a timezone converter , an interactive calendar , and a leap year viewer .

Do the tools work on mobile devices?

Yes. The site is fully responsive and all tools are designed to work on smartphones and tablets as well as desktop browsers. The layout adapts automatically to smaller screens without losing any functionality.

Is this the official Microsoft PowerToys?

No. Powertoys.Online is an independent site and is not affiliated with, endorsed by, or connected to Microsoft Corporation in any way. If you are looking for the official Microsoft PowerToys desktop application for Windows, visit the Microsoft PowerToys GitHub repository .

How do I suggest a new tool or report a bug?

If a tool produces an unexpected result or you have an idea for a new utility, click here to email us . Tool requests are reviewed and prioritised based on general usefulness.

The Workbench for Precision Digital Work.

A curated suite of high-performance utilities designed for developers, designers, and creators who value speed and technical accuracy.

GUID Generator Password Generator Base64 Encode / Decode JSON Data Compare Word Counter Case Converter JPG / PNG to PDF Color Picker Emoji Copy Explore All Tools

Tools by Category

22 free browser-based utilities — no account, no uploads, no data leaves your device.

Developer Tools

Utilities built for daily development work. Generate UUIDs for databases, encode and decode Base64 strings, diff JSON payloads to hunt regressions, inspect fixed-length files, and convert between binary, octal, decimal, and hexadecimal number bases.

Text & Documents

Count words and characters in an essay or client brief, convert Excel spreadsheets to plain CSV, inspect structured flat files column by column, and bundle a batch of JPG or PNG images into a single PDF — entirely offline.

Word Counter Case Converter Excel to CSV Fixed Length Viewer JPG / PNG to PDF

Unit Converters

Instantly convert between international units of measurement — metres to feet, kilograms to pounds, Celsius to Fahrenheit, seconds to hours. Useful for engineering calculations, recipe scaling, scientific work, and international travel planning.

Length Weight Temperature Time

Colors & Design

Pick any color from a visual palette and get its HEX, RGB, and HSL values instantly. Use the color converter to translate between color models when moving between design tools and code. Browse the full emoji library and copy any symbol to clipboard.

Color Picker Color Converter Emoji Copy

Date & Time

Browse a full-year calendar with public holidays, check whether any year is a leap year, and convert the same moment across dozens of world time zones simultaneously — essential for remote teams coordinating across multiple countries.

Calendar Timezone Converter Leap Year Viewer

Precision at Scale

All tools run entirely in your browser — zero data leaves your machine. Just clean, fast, accurate results.

Explore All Tools

Why Powertoys.Online?

Powertoys.Online is a free collection of precision web utilities designed for developers, designers, writers, and anyone who works with data professionally. Every tool runs entirely inside your browser using JavaScript — no account required, no file uploads, no data stored on any server.

Whether you need to generate a UUID for a database record, compare two JSON payloads to find a regression, convert a hex color value for a stylesheet, or quickly count the words in a client document, there is a purpose-built tool here for the task. No installation, no browser extension, no waiting.

The collection currently spans 22 tools across developer utilities, text processing, unit conversion, color manipulation, and date and time tooling. New tools are added based on the real workflows of the people who use the site.

Private by design All processing happens in your browser. Your data never leaves your device and is never sent to a server.
Zero friction No sign-up, no install, no extensions. Open any tool and start working immediately.
Technically accurate Each tool is purpose-built for precision — not convenience approximations that are close enough.

Frequently Asked Questions

Are these tools completely free?: Yes — every tool on Powertoys.Online is free with no hidden costs or paywalls. The site is supported by advertising. You do not need to create an account or provide any personal information to use any tool.
Do the tools upload or store my data?: No. All tools run entirely in your browser using client-side JavaScript. Your files, text, and inputs never leave your device and are never transmitted to any server. This makes Powertoys.Online safe to use with sensitive or confidential content.
What tools are currently available?: The collection includes a GUID / UUID generator, Base64 encoder and decoder, JSON data compare, JSON schema compare, password generator, ASCII table reference, number base converter, word counter, fixed-length file viewer, Excel to CSV converter, JPG and PNG to PDF converter, color picker, color converter, emoji copy, unit converters for length, weight, temperature, and time, a timezone converter, an interactive calendar, and a leap year viewer.
Do the tools work on mobile devices?: Yes. The site is fully responsive and all tools are designed to work on smartphones and tablets as well as desktop browsers. The layout adapts automatically to smaller screens without losing any functionality.
Is this the official Microsoft PowerToys?: No. Powertoys.Online is an independent site and is not affiliated with, endorsed by, or connected to Microsoft Corporation in any way. If you are looking for the official Microsoft PowerToys desktop application for Windows, visit the Microsoft PowerToys GitHub repository.
How do I suggest a new tool or report a bug?: If a tool produces an unexpected result or you have an idea for a new utility, . Tool requests are reviewed and prioritised based on general usefulness.