Developer Tools
Practical web developer utilities for JSON, Base64, URLs, hashes, JWTs, APIs, code formatting and common debugging tasks.
API Documentation Generator
API Docs Generator helps developers create clean, structured documentation for REST API endpoints without writing HTML by hand.
Base64 Encoder Decoder
Base64 Encoder Decoder converts plain text into Base64 format, or decodes Base64 back into readable text, entirely inside your browser.
Code Minifier Tool
Toolinium Code Minifier compresses your HTML, CSS and JavaScript by removing unnecessary whitespace, comments and line breaks — reducing file size without…
Color Code Converter
Color Code Converter instantly translates a HEX color code into RGB, HSL and CMYK equivalents, with a live color preview.
Hash Generator Tool
Hash Generator creates cryptographic hashes of any text using SHA-1, SHA-256, SHA-384 or SHA-512, powered by your browser's built-in Web Crypto API.
Hello Toolinium 🚀
HTML Live Editor is a lightweight browser playground for HTML, CSS and JavaScript.
Image to Base64 Converter
Image to Base64 Converter turns any image file into a Base64-encoded data string that you can embed directly inside HTML, CSS or JSON — no external file…
JSON Formatter & Validator FREE
Free online JSON formatter, validator and minifier. Format, beautify, minify and validate JSON instantly.
JSON → CSV Converter
JSON to CSV Converter transforms a JSON array of objects into clean CSV output, ready to open in Excel, Google Sheets or any spreadsheet tool.
JWT Decoder Tool
JWT Decoder Tool decodes JSON Web Tokens to reveal the header and payload, and checks whether the token has expired — all locally in your browser.
Lorem Ipsum Generator
Lorem Ipsum Generator creates placeholder text in words, sentences or paragraphs for mockups, wireframes and design prototypes.
Mini Postman API Tester
Test REST APIs online with Toolinium free API Tester. Send GET, POST, PUT & DELETE requests instantly with headers, JSON body, response viewer, copy & download support.
Password Generator
Password Generator creates strong, random passwords with a customizable length and character set — uppercase, lowercase, numbers and symbols.
URL Encoder & Decoder
URL Encoder & Decoder converts special characters in a URL into percent-encoded format, or decodes an already-encoded URL back into readable text.
User Agent Parser
User Agent Parser reads your browser's user agent string and instantly identifies the browser, operating system and device type.