All tools

46 tools, every one computed in your browser. More arriving steadily — see the changelog.

JSON & Data · 7

JSON Formatter & Validator Format, validate and minify JSON with precise error positions

JSON ↔ YAML ↔ TOML Converter Convert between JSON, YAML and TOML with format auto-detection

JSON ↔ CSV Converter Flatten JSON to CSV, or parse CSV back into typed JSON objects

JSON → TypeScript Types Infer TypeScript interfaces from a JSON sample instantly

JSONPath Tester Query JSON with JSONPath expressions and see every match with its path

XML ↔ JSON Converter Convert XML documents to JSON and back, attributes included

JSON Schema Validator & Generator Validate JSON against a schema, or infer a schema from sample data

Encoding · 8

Base64 Encode / Decode Encode text to Base64 or decode Base64 to text, URL-safe included

JWT Decoder Decode JWT header and payload, check expiry — fully offline

URL Encode / Decode Percent-encode or decode URL components and query strings

HTML Entities Encode / Decode Escape text for HTML or decode &-style entities back to characters

Unicode Character Inspector See code points, UTF-8/UTF-16 bytes and escapes for every character

String Escaper / Unescaper Escape or unescape strings for JSON, JavaScript, Java, XML, SQL and CSV

Number Base Converter Convert numbers between binary, octal, decimal, hex and any base up to 36

Text ↔ Hex / Binary Converter Turn text into hex, binary or decimal bytes and decode byte dumps back

Image · 6

Background Remover Remove the background from any photo — free, in your browser, no upload

Image ↔ Base64 Converter Turn images into Base64 data URLs and back — with CSS and HTML snippets

Image Format Converter Convert images between PNG, JPEG and WebP with a quality dial

Image Resizer Resize images by width, height or percentage — sharp and entirely offline

Favicon Generator Turn any image into favicon.ico plus the full PNG and manifest icon set

QR Code Decoder Read QR codes from images or live camera — URLs, WiFi and text, offline

Date & Time · 2

Unix Timestamp Converter Convert unix timestamps to human dates and back, with relative time

Cron Expression Parser Explain any cron schedule in plain English with the next run times

Web · 5

Regex Tester Test regular expressions with live match highlighting and groups

URL Parser Break a URL into protocol, host, path and query parameters

Color Converter Convert colors between HEX, RGB, HSL and OKLCH with live preview

User-Agent Parser Identify browser, engine, OS and device from a User-Agent string

CIDR / Subnet Calculator Work out network, broadcast, mask and host range for any IPv4 or IPv6 CIDR block

Text · 6

Text Diff Checker Compare two texts line by line and see additions and deletions

Case Converter Switch between camelCase, snake_case, kebab-case, PascalCase and more

Word Counter Count words, characters, sentences, bytes and reading time as you type

Lorem Ipsum Generator Generate placeholder words, sentences or paragraphs for mockups

Slug Generator Turn titles into clean URL slugs with separator and length options

Sort & Dedupe Lines Sort lines alphabetically or naturally, remove duplicates and empties

Generators · 3

UUID Generator Generate UUID v4/v7, ULID and Nano ID — single or in bulk

Password Generator Random passwords with charset options and an honest entropy meter

QR Code Generator Generate crisp QR codes as SVG or PNG — no watermark, no upload

Hashing & Crypto · 2

Hash Generator MD5, SHA-1, SHA-256, SHA-512 and HMAC — computed in your browser

Bcrypt Hash & Verify Hash passwords with bcrypt and check hashes against plaintext

Code & Markup · 6

SQL Formatter Format SQL with dialect-aware keywords, or minify it to one line

XML Formatter & Validator Pretty-print, minify and validate XML with exact error positions

Markdown ↔ HTML Converter Render Markdown to HTML with live preview, or turn HTML back into Markdown

HTML Formatter & Minifier Beautify messy HTML or minify it for production

CSS Formatter & Minifier Beautify CSS for reading or minify it for shipping

JavaScript Formatter & Minifier Beautify JavaScript or minify it with real compression and mangling

Privacy · 1

EXIF Viewer & Remover See what metadata your photos carry — and strip it without re-encoding