All Tools
Browse our complete collection of fast, privacy-friendly utilities. Use the search or select a category to find what you need.
Word Counter
Count words, characters, sentences, and paragraphs in any text instantly.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, and more.
Lorem Ipsum Generator
Generate customizable placeholder lorem ipsum text for your designs.
Unit Converter
Convert between length, weight, temperature, area, volume, and time units.
Color Converter
Convert colors between HEX, RGB, HSL, HSV, and CMYK formats.
Base64 Encoder / Decoder
Encode text or files to Base64 and decode Base64 strings back to plain text.
Password Generator
Generate strong, secure passwords with custom length and character sets.
UUID Generator
Generate UUIDs (v4) instantly for use in your applications.
QR Code Generator
Create QR codes for URLs, text, email, or phone numbers — download as PNG.
JSON Formatter
Beautify, minify, and validate JSON with syntax highlighting and error detection.
Markdown Previewer
Write Markdown and see a live rendered HTML preview side by side.
HTML Beautifier
Format and indent messy HTML code into clean, readable structure.
Free Online Tools for Every Task
Toolzeni is your all-in-one online toolkit, offering a growing library of 50+ free utilities designed to make your digital work faster and easier. From processing and analyzing text to converting colors, generating secure passwords, and formatting messy JSON or HTML — every tool you need is right here, no downloads or sign-ups required.
Text Tools
Our Text Tools category covers everything you need to work with written content. The Word Counter tracks words, characters, sentences, and paragraphs in real time. The Case Converter lets you switch between UPPERCASE, lowercase, Title Case, camelCase, and more instantly. Need dummy content for your designs? The Lorem Ipsum Generator produces fully customizable placeholder text on demand.
Converters
The Converters category includes tools for everyday data transformation tasks. Our Unit Converter handles length, weight, temperature, area, volume, and more across metric and imperial systems. The Color Converter translates between HEX, RGB, HSL, HSV, and CMYK formats — indispensable for designers and developers. The Base64 Encoder / Decoder handles encoding and decoding for API payloads, data URIs, and more.
Generators
Toolzeni's Generators create secure, random, and unique values in one click. The Password Generator uses browser-native cryptographic APIs to create strong passwords up to 128 characters long. The UUID Generator produces RFC 4122 v4 UUIDs instantly, and the QR Code Generator turns any URL, phone number, or text string into a downloadable PNG QR code.
Formatters
The Formatters category helps developers and writers clean up structured content effortlessly. The JSON Formatter beautifies, minifies, and validates JSON with syntax highlighting. The Markdown Previewer gives you a live side-by-side rendering of your Markdown. The HTML Beautifier reformats compressed or unindented HTML into clean, readable code.
Why Toolzeni?
Every tool on Toolzeni is built with three core principles in mind: speed, privacy, and simplicity. The vast majority of our tools run entirely in your browser, meaning your data never leaves your device. There are no ads to fight through, no accounts to manage, and no paywalls. Toolzeni is free for everyone — always.