All developer tools
Every tool runs entirely in your browser. Pick a category or search by name, format or task.
Formatters
Pretty-print, minify and normalise structured data.
Converters
Move data between formats without losing fidelity.
JSON to YAML
Convert JSON to YAML and back, with types and large numbers kept intact.
YAML to Properties
Convert application.yml to application.properties and back, Spring Boot style.
XML to JSON
Convert XML documents into clean, predictable JSON.
Timestamp Converter
Paste any date or Unix timestamp and read it in your time, in every format and zone.
JSON to CSV
Flatten JSON arrays into spreadsheet-ready CSV.
CSV to JSON
Parse CSV into structured JSON with custom delimiters.
Number Base Converter
Convert between binary, octal, decimal and hexadecimal.
Compare
Spot differences between two files, objects or strings.
Encode & decode
Base64, URL, JWT, hashing and other transformations.
JWT Decoder
Decode a JWT, read its claims and expiry, and verify its signature in your browser.
Base64 Encoder
Encode and decode Base64 text, files and data URIs.
URL Encoder
Percent-encode and decode URLs and query strings.
Hash Generator
Compute MD5, SHA-1, SHA-256 and SHA-512 checksums locally.
Generators
Produce ids, passwords, mock data and boilerplate.
Password Generator
Create strong random passwords and passphrases, with the entropy behind each one.
UUID Generator
Generate UUID v4 and v7 identifiers in bulk.
Lorem Ipsum Generator
Generate placeholder paragraphs, sentences and words.
QR Code Generator
Turn links and text into downloadable QR codes.
Text & web
Everyday utilities for strings, colours and the web platform.
Cron Parser
Paste a cron expression and read it in plain English, with the next runs in your zone.
SQL Call Graph Viewer
Explore which stored procedures call which, and which tables they touch, as a tree or a graph.
Regex Tester
Test regular expressions live with match highlighting and groups.
Case Converter
Switch text between camelCase, snake_case, kebab-case and more.
Color Converter
Convert HEX, RGB, HSL and OKLCH, with contrast checking.
Markdown Preview
Render Markdown to HTML with a live side-by-side preview.
JSON Validator
Validate JSON against a schema and get readable error paths.
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