# DevToys: A Native Developer Utility App That Keeps Data Off the Web

> DevToys is a free MIT-licensed desktop app bundling 30 developer tools for encoding, formatting, and test data generation. It runs on Windows, Mac, and Linux, and uses a Smart Detection feature that reads the clipboard and automatically selects the right tool for the data it finds.

**DevToys-app/DevToys** — Project brief: A Swiss Army knife for developers. No need to use many untrustworthy websites to simply decode a text or compress an image.

- Repository: https://github.com/DevToys-app/DevToys
- Website: https://devtoys.app/
- Stars: 32,039 · Forks: 1,761
- Language: C#
- License: MIT
- Published: 2026-08-04 · Updated: 2026-08-18 · Language: en
- Canonical page: https://hysenlabs.com/projects/devtoys-app-devtoys

## A Clipboard-Aware Utility That Replaces Online Dev Tool Websites

DevToys was built around a specific frustration. When a developer needs to decode a Base64 string, format a JSON blob, or check a JWT, the common workaround is opening one of several browser-based utilities. Those sites may log requests, display advertising, or simply be untrustworthy with sensitive data. The repository description captures this directly: no need to use many untrustworthy websites to simply decode a text or compress an image.

The app handles these operations as a native desktop process, keeping data local. This matters most for credentials: a JWT token carries an encoded identity claim, and sending one to an unknown website is a real risk. DevToys handles JWT decoding, Base64 encoding and decoding, password generation, and hash computation without any network request.

Smart Detection is the feature that distinguishes DevToys from a static toolbox. When the user has data on the clipboard, the app reads it and automatically opens the most appropriate tool. According to the README, the app intuitively selects the best tool for the data on the clipboard. Clipboard contains a JSON string and the app opens the JSON Formatter. Clipboard contains a URL-encoded string and the app opens the URL encoder tool. This reduces the workflow to two steps: copy the data, switch to DevToys.

## The Thirty Built-In Tools and Their Seven Categories

DevToys 2.0 ships with 30 tools organized into seven categories. Converters handle JSON-to-YAML conversion, date formatting, and number base changes. Encoders and Decoders cover HTML entities, URL encoding, Base64 for text and images, GZip compression, JWT decoding, and QR code generation. Formatters apply structured output to JSON, SQL, and XML. Generators produce hashes and checksums, random placeholder text, and passwords. Graphics tools include a color blindness simulator and a PNG/JPEG compressor. Testers provide a JSONPath evaluator, a regular expression tester, and XML validation. Text Utilities add Markdown preview, a text comparison tool, and a text analyzer.

This coverage is practical rather than exhaustive. Each tool is narrow in scope: the JSON Formatter formats JSON but does not transform schemas. The RegEx Tester tests patterns but does not explain them. The design choice is breadth over depth, giving a quick utility for each common task rather than a comprehensive workbench for any single task. More tools are available through extensions, which the README describes as available beyond the 30 defaults.

## Getting DevToys and Its Installation Paths

The README links to devtoys.app as the primary distribution point and does not include package manager install commands in the repository text. The homepage at devtoys.app is where downloads are offered. The repository does include build scripts (build.cmd, build.ps1, build.sh) for contributors who want to build from source, alongside init.cmd, init.ps1, and init.sh initialization scripts. A global.json file pins the .NET SDK version for the build. These are contributor paths, not the intended user installation path.

Contributors and extension developers will find a CONTRIBUTING.md for the contribution workflow. The extension documentation is hosted at devtoys.app/doc, which the README references as the starting point for building custom tools. The README does not describe the installation process for specific platforms such as Windows Package Manager, Homebrew, or Snap; that information lives on the homepage.

## Extensions: What Lies Beyond the Default Thirty

DevToys supports an extension system that lets developers add tools not included in the default build. The README states that more tools are available through extensions and points to devtoys.app/doc for the developer documentation. The repository includes an EXTENSIONS-TERM-AND-CONDITIONS.md file, which means the extension distribution operates under terms separate from the MIT license covering the core application.

The README does not enumerate what categories of tools are missing from the default 30, nor does it list examples of community-developed extensions. A developer looking for a tool that is not in the default set needs to consult devtoys.app to see the current extension catalog. The extension API documentation at devtoys.app/doc is the reference for writing a new extension, though the README does not describe the API surface in the repository text.

## DevToys vs it-tools: Native Desktop vs Browser-Based Collection

The search data for this repository includes the comparison query devtoys vs it tools, reflecting a real choice developers make. it-tools is a browser-based open-source collection of developer utilities. The central trade-off is installation: it-tools runs in any browser without setup, while DevToys requires a native installation. In exchange for that step, DevToys gains OS-level clipboard access, enabling Smart Detection to work automatically. It also provides PNG/JPEG compression through a native graphics pipeline, which a browser-based tool handles differently.

For offline environments or restricted networks, a native app has an advantage because it does not depend on a connection to load its tools. For shared or managed machines where installing software is not permitted, a browser-based tool is the practical path. DevToys is extensible through a plugin API with its own terms and documentation, while it-tools follows a different contribution model. The choice reduces to whether Smart Detection and native performance justify an install over opening a tab.

## Maintenance Status, Recent Releases, and License

The last push to the DevToys repository was on 2026-02-25. The most recent release was v2.0.9.0, published on 2026-01-08. The two releases before that, v2.0.8.0 and v2.0.7.0, were published in November 2024, showing a period of rapid iteration that has since slowed. The repository is not archived.

DevToys is distributed under the MIT license, which permits unrestricted use, copying, modification, and distribution with no royalty. The extension system operates under EXTENSIONS-TERM-AND-CONDITIONS.md, which is a separate document. The third-party software included in the application is listed in THIRD-PARTY-NOTICES.md. There is no indication in the repository of a paid tier or commercial edition.

## Conclusion

Developers who regularly decode tokens, format JSON, or compress images without wanting to open a browser tab will find DevToys directly useful. The Smart Detection feature is the most distinctive capability in the category, selecting the right tool from clipboard content automatically. The last push to the repository was on 2026-02-25 and the most recent release was v2.0.9.0 in January 2026; before building a custom extension, verify the extension API and documentation at devtoys.app/doc are current.

## FAQ

### What is DevToys?

DevToys is a desktop utility app bundling 30 tools for common developer tasks including encoding, decoding, formatting, and test data generation. It includes a Smart Detection feature that reads the clipboard and automatically opens the most appropriate tool for the data it finds.

### Is DevToys free?

Yes. DevToys is released under the MIT license, which permits unrestricted use and distribution at no cost. The repository includes no paid tier or subscription component.

### Is DevToys safe to use?

DevToys is open-source under the MIT license, so the source code is publicly available for review. The README frames the app as a local alternative to external websites, keeping developer data out of online tools. The repository includes a PRIVACY-POLICY.md file for users who want to review the project's data handling statement.

## Sources

- [Official documentation](https://devtoys.app/)
- [Official README](https://github.com/DevToys-app/DevToys#readme)
- [Project repository](https://github.com/DevToys-app/DevToys)
- [Release notes](https://github.com/DevToys-app/DevToys/releases)

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Hysen Labs editorial analysis, written from the project's own repository and release notes. Cite the canonical page: https://hysenlabs.com/projects/devtoys-app-devtoys