Meet DevToys: The Swiss Army Knife for Developers

You know that feeling when you need a quick JSON formatter, a Base64 decoder, or a quick regex tester? You open a browser, hunt down a random website, hope it's not down, and then pray it doesn't plaster ads all over your screen. It's annoying.

DevToys is the answer to that. It's a free, open-source, offline desktop app that bundles dozens of common developer tools into one clean interface. Think of it like a multi-tool for your coding workflow, no internet required.

What It Does

DevToys provides a collection of handy utilities that developers use regularly. Instead of installing a dozen separate apps or relying on sketchy online tools, you get them all in one place. The current version includes over 20 tools, grouped into categories like:

• Converters – JSON to YAML, Base64 text/image, timestamp to date, number base conversion.
• Encoders/Decoders – HTML, URL, Base64, JWT decoder.
• Formatters – JSON, XML, SQL, HTML, CSS.
• Generators – UUID, hash (MD5, SHA1, SHA256, etc.), Lorem Ipsum.
• Text Utilities – Regex tester, text diff, string inspector, markdown preview.
• Image Tools – Color picker, image compressor, SVG to PNG.

All of this runs locally on your machine. No data leaves your computer. No ads. No tracking. Just the tools, ready when you are.

Why It's Cool

The real magic is in the Smart Detection feature. When you paste something into any tool's input, DevToys tries to automatically figure out what you need. For example:

• Paste a long JSON string, and it suggests the JSON formatter.
• Paste a Base64 image, and it suggests the Base64 image decoder.
• Paste a timestamp, and it suggests the timestamp converter.

It's subtle but incredibly useful. You just paste, and the app guesses the right tool. No searching through menus.

Another clever touch is that all tools are offline. This is huge. No more worrying about an online tool going down, changing its API, or spying on your data. The whole app is just a few MBs and works perfectly on a plane, in a coffee shop, or in a secure environment.

The UI is clean and fast, built with modern desktop frameworks. It's available for Windows, macOS, and Linux (using Windows App SDK / WinUI 3, with plans for more). It's also fully open source, so you can audit it, contribute, or even fork it.

How to Try It

Getting started is dead simple:

1. Visit the DevToys GitHub repository.
2. Go to the Releases section (or the Installation docs).
3. Download the installer for your OS:
   • Windows: .exe or .msix installer.
   • macOS: .dmg file (M1/Intel).
   • Linux: .deb or .AppImage (community supported).
4. Run the installer. Open the app. Paste something. Done.

Or if you're on Windows 10/11, you can grab it from the Microsoft Store (search "DevToys").

Final Thoughts

Honestly, after using DevToys for a week, I uninstalled three other single-purpose apps. It's not trying to replace a full IDE or a dedicated tool like Postman. It's for those quick little tasks that used to waste 30 seconds each. When you do those tasks ten times a day, it adds up fast.

The offline nature is the killer feature for me. I work on trains and in secure environments where internet is unreliable or blocked. DevToys just works, always.

If you're tired of juggling tab-heavy online tool sites or installing a dozen cluttery utilities, give DevToys a shot. It's free, it's fast, and it's one of those tools that quietly makes your day better.

Found this useful? Follow @githubprojects for more developer tools and open source projects.