As a backend developer, I end up using small utility tools all the time.
Formatting JSON, cleaning up SQL queries, validating responses — these are tiny tasks, but they happen every day.
The problem?
Most tools are either:
- slow
- filled with ads
- require login
- or just too cluttered
So over time, I found myself sticking to a few simple, fast tools.
Here are 5 that I genuinely use daily 👇
1. JSON Formatter (Fast & Clean)
When working with APIs, raw JSON can get messy quickly.
A good formatter makes it:
- readable
- easier to debug
- easier to spot issues
👉 I actually built a simple one for myself:
https://toolhub.fyi
It’s focused on:
- speed
- zero login
- clean UI
2. SQL Formatter
Messy SQL = painful debugging.
Formatting queries properly helps:
- understand joins faster
- debug logic errors
- improve readability
I use formatters almost every time I write complex queries.
3. JSON Validator
Sometimes APIs return broken or unexpected responses.
A validator helps quickly:
- detect syntax errors
- avoid runtime issues
4. Text Diff Checker
Comparing two responses manually is a nightmare.
Diff tools help you:
- spot changes instantly
- debug faster
5. Base64 Encoder/Decoder
Surprisingly useful when dealing with:
- tokens
- encoded payloads
- API debugging
Why I Built My Own Tool Hub
I got tired of switching between multiple sites just to do simple things.
So I built a small tool hub that puts everything in one place:
👉 https://toolhub.fyi
It’s still early, but the goal is simple:
- fast tools
- no clutter
- no login
- developer-first experience
Would Love Your Feedback 🙌
If you use similar tools:
- What do you use the most?
- Anything you wish existed but doesn’t?
I’m actively improving it based on real feedback.
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