I Built 30+ Free Online Tools with Vanilla JS - No Frameworks, No Signup

gqc58 — Wed, 27 May 2026 14:30:24 +0000

I Built 30+ Free Online Tools with Vanilla JS – No Frameworks, No Signup
Why I Built This
As a developer, I constantly need quick utilities: formatting JSON, encoding base64, counting words, compressing images…

Most “free” tools out there:

Force you to sign up
Are bloated with ads
Send your data to their servers
Use heavy frameworks that slow everything down
So I built Vaultool – a collection of 30+ free online tools that run 100% in your browser.

What It Does
Vaultool includes tools for:

Developers:

JSON Formatter / Validator
Base64 Encode / Decode
Regex Tester
Color Picker / Converter
JWT Decoder
Everyone:

Word Counter
Image Compressor (lossless)
PDF Tools
Text Diff Checker
QR Code Generator
🔗 Live: https://vaultool.com

Key Features

Privacy-First
Everything runs client-side. No data leaves your device. No tracking, no analytics, no ads.
Zero Dependencies
Built with vanilla JavaScript – no React, no Vue, no Angular. Just fast, clean code.
No Signup Required
Every tool is free and instant. No email, no credit card, no account.
Open Source (Partially)
I’ve open-sourced 4 core tools:

json-formatter
base64-converter
word-counter
image-compressor
Each is a single HTML file with zero dependencies – drop it on any server and it works.

Tech Stack
Frontend: Vanilla JS + CSS
Build: None (intentionally)
Hosting: Static files on CDN
No frameworks. No bundlers. No nonsense.
Lessons Learned

Vanilla JS is Still Powerful
You don’t need React for everything. For tool-style apps, vanilla JS is often faster and simpler.
Privacy is a Feature
People love that their data doesn’t leave their device. It’s a selling point.
Developer Experience Matters
Fast load times, clean UI, and no signup friction = happy users.

Try It Out
🔗 https://vaultool.com

I’d love your feedback! What tools should I add next? What could be improved?

Tags: #webdev #javascript #tools #privacy #opensource

DEV Community: gqc58

I Built 30+ Free Online Tools with Vanilla JS - No Frameworks, No Signup