Free Developer Tools

Fast, free & ad-light
Everything runs in your browser

A growing collection of free, no-signup tools for developers — built to be genuinely useful and to respect your privacy. Nothing you paste is uploaded or stored; every tool runs entirely in your browser.

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JSON Formatter & Validator

Format, minify & validate JSON. Explains errors in plain English, points to the exact spot, and suggests fixes.

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Unix Timestamp Converter

Convert between Unix epoch timestamps and human-readable dates, in any timezone.

Coming soon

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Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 back to text, instantly in your browser.

Coming soon

Free Developer Tools

Fast, free & ad-light

Everything runs in your browser

JSON Formatter & Validator

Unix Timestamp Converter

Base64 Encoder / Decoder

JavaHandsOn is a learning website. Here I will share knowledge related to Java and its frameworks like Spring, Hibernate, Spring Boot, etc. We will learn every topic using some basic examples. I hope you get in-depth knowledge of Java here and be a proficient developer.