🛠️ I Built 30+ Free Developer Tools - Here's What I Learned

Udit Sharma — Mon, 19 Jan 2026 17:50:26 +0000

Hey dev community! 👋

I spent months building Code Formatter - a collection of 30+ free developer tools. Here's my journey and lessons learned.

🤔 The Problem

Like most developers, I was:

Opening 10+ browser tabs for simple tasks
Googling "json formatter" every single day
Frustrated with ad-filled, slow websites
Worried about pasting sensitive data on random sites

💡 The Solution

I built ONE website with ALL essential dev tools:

Formatters & Beautifiers

JSON Formatter (with tree view!)
HTML, CSS, JavaScript Formatter
SQL & XML Formatter

Minifiers & Compressors

JSON, HTML, CSS, JS Minifier
Compress up to 80% smaller

Converters

Excel/XLS to HTML Table
CSV to JSON
PX to REM

Design Tools

🎨 Glassmorphism CSS Generator
✨ Smooth Shadow Generator
🎯 Color Converter (HEX ↔ RGB ↔ HSL)

Developer Utils

🔐 Base64 Encoder/Decoder
🔑 JWT Token Decoder
#️⃣ Hash Generator (MD5, SHA)
📱 QR Code Generator

🔒 Privacy First

Everything runs in YOUR browser!

Zero data sent to servers
No tracking or analytics
No signup required
100% free forever

🎯 Lessons Learned

Simple > Complex - Users want quick solutions
Speed matters - Every millisecond counts
Privacy is a feature - People care about their data
One place > Many tabs - Convenience wins

🔗 Try It Out

Check it out: **codeformatter.in**

💬 Feedback Welcome!

What tools would you add? Drop a comment below! 👇

Follow me for more developer tools and tips!

javascript, #webdev, #productivity, #tools

I Built 30+ Developer Tools in One App (Because I Was Tired of Opening 47 Browser Tabs) 🤦‍♂️

Udit Sharma — Sun, 04 Jan 2026 05:03:43 +0000

The 2 AM Problem Every Developer Faces

Picture this: It's 2 AM. You're debugging an API response. Your browser has 47 tabs open:

Tab 1-3: "best JSON formatter online"
Tab 4-7: Various CSS minifiers (half don't work)
Tab 8-10: Base64 encoders (one has sketchy ads)
Tab 11-15: You forgot what these were for
Tab 16-47: Stack Overflow answers you opened 3 hours ago

Sound familiar? Yeah, me too. 😅

The "Aha!" Moment

After the 47th time searching for "free JSON formatter no login", I had an epiphany:

What if there was ONE tool that did EVERYTHING? And actually respected my privacy?

So I built it. Meet Code Formatter - your Swiss Army knife for web development.

What's Inside? (The Good Stuff) 🛠️

1. Code Formatters & Beautifiers

JSON Formatter (with syntax highlighting)
HTML Beautifier
CSS Formatter
JavaScript Formatter
SQL Formatter
XML Formatter

No more copy-pasting into sketchy websites. Format your code instantly.

2. Minifiers

Because production code shouldn't look like a novel:

CSS Minifier
JavaScript Minifier
HTML Minifier

One click. Instant compression. Ship faster.

3. Data Converters

The boring stuff made easy:

JSON to CSV
CSV to JSON
Excel to HTML Table
JSON to XML
XML to JSON

Ever needed to convert client data at 11:59 PM? Now you can.

4. Security Tools

For when you need crypto (the good kind):

Hash Generator (MD5, SHA-1, SHA-256, SHA-512)
JWT Decoder
Base64 Encoder/Decoder
URL Encoder/Decoder

Perfect for testing auth flows without sending data to random websites.

5. CSS Generators

Stop googling "glassmorphism generator":

Glassmorphism Generator
Box Shadow Generator
Text Shadow Generator
Gradient Generator
Aspect Ratio Calculator

Copy the CSS. Done. Ship it.

6. Utility Tools

The stuff you need but never bookmark:

Text Diff Checker
Lorem Ipsum Generator
Mock Data Generator
Color Picker
Unit Converter

7. Preview Tools

HTML Live Preview
Markdown Preview
Social Media Preview (Twitter, Facebook, LinkedIn cards)

Test your meta tags before shipping. Your designer will thank you.

But Wait... Is My Data Safe? 🔒

Here's the best part: I literally cannot see your data. Even if I wanted to.

🛡️ 100% Client-Side Processing

Every single operation happens in your browser. Not my server. Not the cloud. YOUR machine.

// This is what happens when you format JSON:
1. You paste code
2. JavaScript processes it locally
3. Result appears
4. Zero network requests

// What DOESN'T happen:
❌ No server upload
❌ No database storage  
❌ No tracking scripts
❌ No analytics on your code

Why This Matters

When you use most online tools, your code goes through their servers. That means:

They can log it
They can store it
They can analyze it
They might have a data breach

With Code Formatter:

Your API keys stay yours
Your production code stays private
Your client data stays confidential
Your secrets stay secret

I built this because I was tired of sketchy tools asking for "permissions" to process my code.

The Tech Stack (For the Curious) 🤓

Frontend: React + Vite (blazing fast)
Styling: Tailwind CSS (because life's too short for vanilla CSS)
Processing: 100% client-side JavaScript
Hosting: Vercel (for that sweet Edge network)
Libraries:
- Prettier (code formatting)
- Papaparse (CSV parsing)
- Crypto-JS (hashing)
- Monaco Editor (syntax highlighting)

No backend. No database. No BS.

Features That Make Me Proud 😊

1. Works Offline

After the first load, it's yours forever. No internet? No problem.

2. No Login Walls

I hate those "Sign up to continue" popups. You won't find them here.

3. No Ads

Your time is valuable. No distractions.

4. Mobile Optimized

Need to format JSON on your phone at 2 AM? (We've all been there) It works.

5. Keyboard Shortcuts

Because developers love keyboard shortcuts:

Ctrl/Cmd + B - Format/Beautify
Ctrl/Cmd + M - Minify
Ctrl/Cmd + K - Clear

6. Dark Mode

Light mode? In 2025? Come on. 😎

7. Open Source

Check the code yourself: [GitHub Link]

Don't trust me? Read the code. That's the beauty of open source.

Real Use Cases (From Real Devs)

Case 1: The API Response Formatter

// You get this mess from an API:
{"user":{"name":"John","data":{"posts":[{"id":1,"title":"Hello"}]}}}

// One click later:
{
  "user": {
    "name": "John",
    "data": {
      "posts": [
        {
          "id": 1,
          "title": "Hello"
        }
      ]
    }
  }
}

Case 2: The Last-Minute Minifier

It's 11:58 PM. Deploy deadline is midnight. Your CSS is 150KB.

One click → 47KB. Shipped with 2 minutes to spare. 💪

Case 3: The Client Data Converter

Client sends you an Excel file. You need it as an HTML table.

Upload → Convert → Copy → Done. (No Excel license needed)

Case 4: The JWT Debugger

Auth isn't working. Is the JWT valid?

Paste → Decode → Oh, it expired 3 hours ago. Mystery solved.

Performance Numbers 📊

Because developers love benchmarks:

Operation	Time	File Size
Format 1MB JSON	~50ms	Client-side
Minify 500KB CSS	~30ms	Client-side
Convert 1000 rows CSV	~100ms	Client-side
Generate SHA-256 hash	~10ms	Client-side

All tested on a 2020 MacBook Pro. Your mileage may vary.

Roadmap (What's Coming Next) 🗺️

I'm actively working on:

[ ] Image optimization tools
[ ] SVG optimizer
[ ] RegEx tester
[ ] API request builder
[ ] Cron expression generator
[ ] Timestamp converter
[ ] Color palette generator
[ ] WebP converter

Want a feature? Drop a comment below! 👇

Why I Built This

I'm tired of:

Sketchy websites with malware
Tools that require accounts
Services that sell your data
Ads everywhere
Slow, bloated apps

I wanted one tool that:

Respects privacy
Works fast
Has no BS
Helps developers ship faster

So I built it. For me. For you. For all of us who just want to get sh*t done.

Try It Now 🚀

Link: https://www.codeformatter.in/

It's free forever. No credit card. No signup. No tracking.

Just tools that work.

Let's Connect!

If you find this useful:

⭐ Star it on GitHub
💬 Drop a comment with your favorite tool
🔄 Share with your dev friends
🐛 Found a bug? Let me know!

Built with ❤️ and too much coffee by a developer who was tired of 47 browser tabs.

FAQ

Q: Is it really free?

A: Yes. Forever. No hidden costs.

Q: Can I use it for commercial projects?

A: Absolutely. Go wild.

Q: Do you collect any data?

A: Nope. Zero data collection. I use simple analytics to see page views, but your code never leaves your browser.

Q: Can I contribute?

A: Yes! It's open source. PRs welcome.

Q: Will there be a paid version?

A: No plans. This is a tool for the community.

Q: What if I find a bug?

A: GitHub issues or comment here. I'm pretty responsive.

Final Thoughts

Developer tools should be:

Fast
Private
Free
Useful

If you agree, give Code Formatter a try. If you have feedback, I'm all ears.

Now go format some JSON. You've earned it. 😎

Tags: #webdev #javascript #react #opensource #tools #developertools #programming #coding #productivity

P.S. If this helps you save even 10 minutes, it was worth building. If it saves you 10 hours, please share it so others can benefit too! 🙏

DEV Community: Udit Sharma