10 Best Free Online Tools for Developers in 2026

Why browser tools win

Most daily developer tasks don't need an install. A URL shortener, a JSON formatter, a quick Base64 decode — these are 30-second jobs. Browser tools are faster because there is nothing to install and nothing to update.

The 10 tools worth bookmarking

1. URL Shortener

2. cURL to Python

3. HTML Runner

4. JSON Formatter

5. Base64 Converter

6. Password Generator

7. Word Counter

8. QR Generator

9. Color Converter

10. This blog

How to pick tools

• Private: conversions should happen locally, like on tichi.shop.
• Fast: it should load in under a second on mobile data.
• Free without signup: if it asks for an account for a 10-second job, skip it.