Tools that just work

20 free browser-based tools for developers, writers & designers. Instant results, no sign-up — your data never leaves your device.

Word Counter

Count words, characters, sentences & paragraphs instantly.

Character Counter

Count characters with frequency analysis and reading time.

Case Converter

Convert text to UPPER, lower, Title, camelCase & more.

Lorem Ipsum Generator

Generate placeholder text for your designs.

Slug Generator

Convert any text to a URL-friendly slug.

JSON Formatter

Format, validate & beautify JSON data instantly.

Base64 Encode / Decode

Encode or decode text using Base64.

URL Encode / Decode

Encode or decode URL components.

HTML Encoder / Decoder

Encode or decode HTML entities safely.

Hash Generator

Generate SHA-1, SHA-256, SHA-512 hashes from text.

UUID Generator

Generate random v4 UUIDs instantly.

Regex Tester

Test regular expressions with live matching.

QR Code Generator

Create QR codes from any text or URL.

Timestamp Converter

Convert between Unix timestamps and human-readable dates.

Markdown to HTML

Convert Markdown syntax to clean HTML code.

Diff Checker

Compare two texts and highlight the differences.

JSON ↔ CSV Converter

Convert between JSON arrays and CSV format.

Color Converter

Convert between HEX, RGB, HSL color formats.

Percentage Calculator

Calculate percentages, increases & decreases.

Password Generator

Generate strong, secure random passwords.

Free Online Tools for Everyday Dev & Text Work

UseToolz bundles the small utilities you reach for every day — from formatting JSON and testing regular expressions to Base64 encoding, counting words and generating strong passwords. Every tool runs instantly in your browser: no downloads, no accounts, and nothing you type is ever sent to a server.

Each tool page explains how the underlying format or algorithm works, walks through a realistic example and answers the most common questions — so you don't just get an output, you understand it. Popular right now: Word Counter, Case Converter, JSON Formatter, Base64 Encode / Decode, Regex Tester, QR Code Generator, Password Generator.