Built a Free All-in-One Tool Platform for Developers & Students — Would Love Your Feedback

I created a browser-based tool platform that combines multiple utilities in one place:

👉 https://shrinkifyv.netlify.app/

Current features include:

JSON formatter & validator
QR code generator
CGPA / grade calculator
Image, audio & video tools
Some basic developer utilities

I need your suggestions on this
like
Features
What’s missing that you’d actually use?
Which tools feel useless?
Anything confusing or unnecessary?

Feel free to be brutally honest — that’s exactly what I need right now.
Even small suggestions (UI tweaks, tool ideas, improvements) would help a lot.

Thanks in advance