Simple Toolkits
Developer utilities that get out of your way
Text Formatter
Case change, trim, replace and more
JSON Formatter
Format, validate, transform JSON data
Hash Generator
Generate hashes, HMAC, and verify checksums
Encoder / Decoder
Base64, URL, HTML, Hex, Unicode, JWT, Morse, and more
UUID / ULID Generator
Generate UUID v4, v7, ULID, and NanoID
Regex Tester
Test patterns, view matches, and extract capture groups
JWT Inspector
Decode, verify (HMAC/RSA/ECDSA), and generate JWTs
Timestamp Converter
Convert between Unix timestamps, ISO 8601, and human dates
Diff / Text Compare
Compare texts with line, word, or character-level diffs
Color Toolkit
Convert colors, check WCAG contrast, and explore palettes & harmonies
Password Generator
Cryptographically secure passwords and passphrases
Data Converter
Convert between JSON, YAML, TOML, XML, CSV, and JSONL with flatten, query, and format options
Delimiter Tool
Split, transform, and rejoin lists — quoting, sorting, dedupe, and code-ready output presets
Code Playground
Live HTML, CSS, and JS editor with an instant sandboxed preview
Cron Expression Parser
Explain cron schedules in plain English and preview upcoming run times
QR Code Generator / Reader
Generate a QR code from text, or decode one from an image
Markdown Previewer
Write Markdown with a live, sanitized preview — export as .md or .html
Lorem Ipsum / Fake Data Generator
Generate placeholder text and mock data records as a table, JSON, or CSV
cURL to Code Converter
Turn a curl command into fetch, axios, Python requests, or PHP cURL code