The Problem: "Where did my API key just go?"
We all do it. You have a messy JSON blob, you Google "JSON formatter," click the first result, and paste your data.
But halfway through, you realize: "Wait, I just pasted a production config file with client IDs into a random website."
Most free developer tool sites have two major problems:
** Privacy Risks: **You don't know if your code is being sent to a backend server (or logged).
** Bloat:** They are often covered in ads, pop-ups, and require 5 seconds just to load a simple script.
I wanted a toolkit that I could trust—one that felt like a native app but lived in the browser. So, I built ToolsHref.com.
The Solution: 100% Client-Side Processing
ToolsHref is a collection of utilities (Converters, Visualizers, Parsers) built with a single rule: Data never leaves your browser.
Whether you are formatting Java code, parsing a date string, or visualizing a dependency tree, the logic runs locally in your browser's JavaScript engine. If you disconnect your internet, the tools still work.
Key Features for Developers
I focused on the tools I actually needed during my day-to-day work as a Java/Web developer:
** JSON to Mermaid Visualizer:** Stop trying to mentally parse nested JSON objects. This tool instantly converts raw JSON into a Mermaid flow diagram. It’s a lifesaver for debugging API responses.
** NPM Dependency Visualizer:** "Dependency Hell" is real. I built a visualizer that renders your package.json dependencies graphically, so you can spot version conflicts instantly.
** Java Utilities: **As a Java dev, I needed a quick way to generate POJOs from JSON or analyze static code without waiting for my IDE to index.
Why Use It?
**Speed**: No backend calls means instant output.
**Privacy**: Your proprietary code stays on your machine.
** No Login**: No "Sign up to see the rest of the output" nonsense.
Check it out
I’m actively adding more tools based on what I find missing in my own workflow. I’d love for you to give it a try and let me know what other "micro-tools" would help you save time.
👉 Try it here: toolshref.com
Top comments (1)
"I'm the creator here!
I built this because I was paranoid about pasting client data into random online formatters, so I made sure everything runs locally.
I'm looking to add 2-3 more tools this weekend. Question for everyone: What is the one 'micro-tool' or converter you find yourself Googling for every week? Let me know and I'll see if I can build it."