🚀 30+ Free Tools I Built for Developers

Rahul Thummar — Mon, 09 Mar 2026 04:22:53 +0000

As developers, we often need small utilities while working formatting JSON, converting images, decoding tokens, or generating dummy text.

Instead of searching for different websites every time, I built a collection of 30+ simple tools that can help speed up daily development tasks.

👉 You can explore all tools here:
codeutils.tech

All tools run directly in the browser and are designed to be fast, simple, and easy to use.

🧰 Developer Tools

Some tools are focused on common development tasks:

👉 JSON Formatter
👉 JSON Diff Viewer
👉 String to JSON
👉 JSON to TypeScript
👉 JWT Decoder
👉 Text Diff
👉 Case Converter
👉 Character Counter

These tools help when working with APIs, debugging data, and formatting text.

🎨 Image & Design Tools

Frontend developers often need quick image utilities, so I added tools like:

👉 Image Compressor
👉 Image Converter
👉 Image Resizer
👉 SVG to Image
👉 Base64 ↔ Image

These help optimize images quickly for better performance on the web.

⚡ Other Useful Tools

I also added some general utilities:

👉 CSS Gradient Generator
👉 QR Generator
👉 Password Generator
👉 Dummy Text Generator
👉 Typing Speed Test
👉 Flowchart Generator
👉 Mind Map Generator

💰 Useful Calculators

Some everyday calculators are also included:

👉 EMI Calculator
👉 Interest Calculator
👉 Age Calculator
👉 File Size Converter
👉 Milliseconds Converter

💡 Why I Built This

As a React developer, I wanted a place where I could quickly access useful utilities without installing anything or opening multiple websites.

So I built a single platform with many useful tools for developers and everyday tasks.

If you have suggestions for new tools, feel free to share them. 🙌

I Built a Free Developer Toolbox to Solve Everyday Coding Tasks

Rahul Thummar — Mon, 02 Mar 2026 05:12:43 +0000

As a web developer, I often found myself opening multiple websites just to handle small but frequent tasks formatting JSON, decoding JWTs, generating CSS gradients, or compressing images, generating diagrams.

Each tool worked, but the experience was rarely smooth. Too many ads, cluttered UIs, or unnecessary sign-ups disrupted my workflow.

So I decided to build something simple for myself.

The Problem I Wanted to Fix

Developers deal with dozens of micro-tasks every day:

👉 Formatting or comparing JSON
👉 Decoding tokens while debugging
👉 Converting images or Base64
👉 Creating gradients or flow diagrams
👉 Count bytes to MB or GB

None of these should require jumping between multiple slow websites.

What I Built: CodeUtils

CodeUtils is a free, browser-based developer toolbox designed for speed and simplicity.

No sign-up
Clean, distraction-free UI
Fast, local-first tools

It started as a personal project, but I realized many developers face the same daily friction.

A Few Tools Inside CodeUtils

Instead of listing everything, here are some commonly used tools:

JSON Formatter & Diff – Format and compare JSON instantly
JWT Decoder – Decode tokens without server calls
CSS Gradient Generator – Create clean gradients quickly
Mind Map & Flowchart Generators – Plan logic visually
Image Compressor – Reduce the project size

In total, CodeUtils currently offers 22+ focused developer tools, all accessible from one place.

Writing About the “Why”

I’ve also started documenting ideas and use cases in the CodeUtils blog, including:

Essential Developer Utilities – why small tools matter
Mind Map Generator – using visual thinking to improve code structure

The goal is not just to provide tools, but to explain how developers can use them effectively.

What’s Next?

CodeUtils is still evolving-improving UI, adding practical tools, and writing more developer-focused content.

Try It & Share Feedback

If you’re curious, you can try CodeUtils here:
👉(https://www.codeutils.tech/)

I’d love feedback or suggestions on what tools you use daily or what’s missing.

Thanks for reading, and happy coding 🙌

DEV Community: Rahul Thummar

🚀 30+ Free Tools I Built for Developers

I Built a Free Developer Toolbox to Solve Everyday Coding Tasks