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DevKit
All tools
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All tools
18 tools, organized by category. Hit
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JSON
Format, convert and inspect JSON.
JSON Formatter
Beautify, minify and validate JSON — instantly, in your browser.
JSON to CSV
Convert JSON arrays to CSV (and back) — entirely in your browser.
JSON ↔ YAML
Convert JSON to YAML and back — fully client-side.
Encoding
Base64, URL, HTML entities and more.
Base64
Encode text to Base64 or decode Base64 back to text — locally and instantly.
URL Encode
Percent-encode and decode URL components — instantly, in your browser.
HTML Entities
Escape and unescape HTML entities — local and private.
Text
Case, diff, dedupe, transform.
Case Converter
Convert text between camelCase, snake_case, kebab-case, PascalCase and more.
Text Diff
Compare two pieces of text and see the differences instantly.
Line Tools
Quick line manipulation: sort, dedupe, remove blanks, add line numbers.
Crypto
Hashing and token tools — all in your browser.
JWT Decoder
Decode JSON Web Tokens — header, payload and expiry, all in your browser.
Hash Generator
Compute cryptographic hashes of text — fully client-side.
Generators
UUIDs, lorem, QR codes and more.
UUID Generator
Generate UUIDs, ULIDs and NanoIDs in bulk — locally and instantly.
QR Code
Generate QR codes for URLs, Wi-Fi credentials and text — fully offline.
Lorem Ipsum
Generate placeholder text by words, sentences or paragraphs.
Color
Convert and inspect color values.
Color Converter
Convert between HEX, RGB and HSL with a live preview.
Web
Markdown, regex and other web helpers.
Regex Tester
Test JavaScript regular expressions live — with match highlighting and groups.
Number Base
Convert between binary, octal, decimal and hexadecimal — instantly.
Markdown Preview
Write Markdown, see the rendered HTML side-by-side — instantly.