# Online Tools

> A comprehensive web-based collection of developer utilities for hashing, cryptography, compression, encoding, formatting, and text conversion.

- Website: https://emn178.github.io/online-tools/?ref=devshelf.io
- DevShelf page: https://devshelf.io/resource/online-tools
- Pricing: Free
- Tags: Open Source, No sign-up
- Categories: [Developer Utilities](https://devshelf.io/category/developer-utilities.md)
- Last checked: 2026-11-02

## About

Online Tools is a comprehensive web-based collection of developer utilities designed for daily engineering tasks. It provides a wide array of functions including cryptographic hashing algorithms, encryption and decryption standards, data compression formats, various encoding schemes like Base64 and Hex, and structured data formatters for JSON and XML. Additionally, it includes generators for UUIDs, passwords, and QR codes, alongside text conversion utilities.

## Alternatives

- [CoderTools](https://devshelf.io/resource/codertools.md): A comprehensive suite of browser-based developer utilities for code formatting, cryptography, data conversion, and system testing. (pricing: Free)
- [IT Tools](https://devshelf.io/resource/it-tools.md): Collection of handy online tools for developers, including cryptography, conversion, web, and network utilities. (pricing: Free)
- [1.tools](https://devshelf.io/resource/1-tools.md): Collection of open-source useful developer tools, converters, encoders, and generators running entirely client-side in the browser. (pricing: Free)

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Source: DevShelf.io, the hand-reviewed catalog of dev tools and resources. Every resource is reviewed by hand before it is listed.