Project Overview

The developer tooling landscape has long suffered from a fragmentation problem — when you need to decode a JWT, format some JSON, or generate a hash, the typical workflow involves opening a browser, navigating to a random web tool, and hoping it doesn’t sell your clipboard data to advertisers. DevToys addresses this by bringing 30 specialized tools into a single native Windows application, built on WinUI 3 with Fluent Design principles[1]. What sets this project apart from the countless “developer utilities” collections is its commitment to the Mica material design language and Windows 11 integration — it feels like a first-class citizen rather than an Electron wrapper around web views. The project has accumulated over 31,000 stars on GitHub[2], which reflects genuine community validation rather than marketing hype. The architecture is particularly interesting because it uses a plugin-based extension system, allowing third-party developers to contribute additional tools through a documented API[3], which addresses the inevitable complaint that any fixed set of utilities will miss someone’s niche need. The 2.0 rewrite was a significant architectural shift that moved from UWP to WinUI 3, giving better performance and modern Windows integration at the cost of dropping Windows 10 support below certain versions.

What It’s For

DevToys is designed for developers who work primarily on Windows and find themselves repeatedly visiting the same half-dozen web tools throughout their day. Instead of maintaining bookmarks for JSON validators, base64 decoders, and regex testers, this application consolidates them into one place with a unified interface. The smart detection feature is the killer differentiator — it monitors your clipboard and automatically suggests the appropriate tool based on content analysis, so copying a JWT token immediately surfaces the JWT decoder without manual navigation. This works well for the common conversion pipelines: JSON to YAML, timestamps to human dates, and color format conversions. The tradeoff is clear: this is a Windows-only application using WinUI 3, so macOS and Linux developers will need to look at alternatives like DevToysMac or the web-based DevToys. The extension system is promising but currently has a smaller ecosystem than something like VS Code extensions, so you’ll likely rely primarily on the built-in 30 tools unless you’re willing to write your own.

How to Use It

The primary interaction model revolves around the smart detection system. You copy content to your clipboard — a JSON blob, a base64 string, a Unix timestamp — and DevToys automatically detects what you’ve copied and presents the relevant tool. This avoids the cognitive overhead of navigating through tool categories manually, though you can browse the full list through the sidebar if smart detection doesn’t match your needs. The tools are organized into logical groups: converters, encoders/decoders, formatters, generators, graphics tools, testers, and text utilities. Each tool presents a split-pane interface with input on one side and output on the other, with real-time updates as you type or paste. The PNG/JPEG compressor is notably useful for web developers who need to optimize images without sending them to a third-party service.

Smart detection parses clipboard content and navigates to the matching tool automatically

Copy a JWT token to clipboard → DevToys auto-opens JWT decoder

The JSON formatter provides syntax highlighting and collapsible tree view

Paste JSON → formatted JSON output appears in real-time

Lossless compression with visual feedback on file size reduction

Drag PNG into compressor → compressed output with size comparison

Recent Updates

Latest Release: v2.0.9.0 (2024-05-07)

Stability improvements and bug fixes following the major 2.0 architecture rewrite

The project has been steadily iterating on the 2.0 release, which represented a complete rewrite from UWP to WinUI 3. The commit history shows active maintenance with regular dependency updates and community contributions. The extension API documentation on devtoys.app/doc suggests the team is betting heavily on ecosystem growth to differentiate from competitors.

Sources & Attributions

[1] DevToys claims 30 default tools with extension support — DevToys-app/DevToys README [2] 31,317 stars on GitHub as of analysis date — https://github.com/DevToys-app/DevToys [3] Extension development documentation available at devtoys.app/doc — DevToys-app/DevToys README