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Free Online Tools for Developers & Productivity

ToolZone is a curated collection of 20 free online tools for developers, designers, writers, and everyday productivity. Every tool runs entirely in your browser — no signup, no uploads, no tracking. Your data never leaves your device.

Format and validate JSON, generate strong passwords, encode and decode Base64 or URLs, test regular expressions, convert colors, build CSS gradients, calculate BMI or age, generate Lorem Ipsum, hash text with MD5 or SHA-256, and more — all from a single fast, private, dark-themed workspace.

Whether you're a developer needing quick utilities, a designer working with colors and gradients, or a writer counting words and characters, ToolZone gives you instant, ad-free access to professional-grade web tools that work offline once loaded.

Free URL Encoder & Decoder

Convert URLs and query strings to and from percent-encoded form. Required when you pass user input through a URL, build query strings, or debug links that contain special characters like spaces, &, ?, # or non-ASCII text.

Features

How to use

  1. Step 1. Paste a URL or query string.
  2. Step 2. Click Encode or Decode.
  3. Step 3. Copy the result for use in your link or code.

Frequently Asked Questions

What characters need encoding?

Spaces, &, ?, =, #, /, +, and any non-ASCII character should be percent-encoded when used inside a URL parameter.

encodeURI vs encodeURIComponent?

encodeURI leaves URL structure characters (: / ?) alone; encodeURIComponent encodes them too. Use the latter for query-string values — that's what this tool uses.

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