Free Online Tools

Format, encode, convert, and inspect — all in your browser. No uploads, no signup.

Popular tools

JSON Formatter

Format, validate, and beautify JSON online. Free, instant, and works entirely in your browser — your data is never uploaded.

Base64

Encode and decode Base64 text and files online. Free, instant, and runs entirely in your browser.

URL Encoder

Encode and decode URL components online. Free, instant, and runs entirely in your browser.

UUID Generator

Generate version-4 UUIDs (GUIDs) online. Bulk generation, copy with one click, runs in your browser.

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes online. Free, instant, and runs in your browser.

JWT Decoder

Decode JSON Web Tokens (JWT) online. Inspect header and payload, runs entirely in your browser.

JSON Tools

Format, validate, convert, and transform JSON.

JSON Formatter

Format, validate, and beautify JSON online. Free, instant, and works entirely in your browser — your data is never uploaded.

JSON Minifier

Minify JSON online — strip all whitespace and produce the smallest valid representation. Runs entirely in your browser.

JSON → CSV

Convert a JSON array of objects to CSV online. Auto-detects columns, handles nested values, runs in your browser.

JSON → XML

Convert JSON to XML online. Free, instant, and runs entirely in your browser.

JSON → YAML

Convert JSON to YAML and back online. Preserves types, handles nesting, runs in your browser.

Encoding & Decoding

Base64, URL, HTML entity encoding and decoding.

Base64

Encode and decode Base64 text and files online. Free, instant, and runs entirely in your browser.

URL Encoder

Encode and decode URL components online. Free, instant, and runs entirely in your browser.

HTML Entities

Encode and decode HTML entities online. Convert characters like <, >, &, and quotes into their HTML-safe form.

Code Formatters & Beautifiers

Format and beautify HTML, XML, CSS, and SQL.

HTML Formatter

Format and beautify HTML online. Indent, wrap, and clean up minified or messy HTML in your browser.

XML Formatter

Format, indent, and validate XML online. Free, instant, and runs entirely in your browser.

CSS Formatter

Format and beautify CSS online. Expand minified CSS into a clean, indented form in your browser.

SQL Formatter

Format and beautify SQL online. Supports MySQL, PostgreSQL, SQLite, T-SQL, BigQuery, and more.

Generators

Generate UUIDs, secure passwords, hashes, and lorem ipsum.

UUID Generator

Generate version-4 UUIDs (GUIDs) online. Bulk generation, copy with one click, runs in your browser.

Lorem Ipsum

Generate Lorem Ipsum placeholder text online. Choose words, sentences, or paragraphs.

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes online. Free, instant, and runs in your browser.

Password Generator

Generate strong, cryptographically random passwords online. Choose length, character classes, run in your browser.

JWT Decoder

Decode JSON Web Tokens (JWT) online. Inspect header and payload, runs entirely in your browser.

All tools A–Z