All Tools

32 developer tools, all free and running locally in your browser.

4

Format and beautify JSON with customizable indentation

Validate JSON syntax and get detailed error messages

JSON to TypeScript

Generate TypeScript interfaces from JSON data

Compare two JSON objects structurally and highlight differences

2

Convert CSV data to JSON format with header detection

Convert a JSON array of objects to CSV format

5

Base64 Encode/Decode

Encode text to Base64 or decode Base64 to text

URL Encode/Decode

Encode or decode URL components and full URLs

Decode and inspect JSON Web Tokens (JWT). View the header, payload, and expiry information without verification.

Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text input

HTML Entity Encode/Decode

Encode special characters to HTML entities or decode HTML entities back to characters

3

Test and debug regular expressions with real-time match highlighting and named group support

Markdown Preview

Live markdown editor with instant HTML preview. Supports GitHub Flavored Markdown including tables, task lists, and fenced code blocks.

Compare two blocks of text line by line and highlight additions, removals, and unchanged lines

4

Timestamp Converter

Convert between Unix timestamps and human-readable dates. Supports seconds, milliseconds, ISO 8601, and relative time formats.

Parse and explain cron expressions. See a human-readable breakdown of each field, a plain-English summary, and the next scheduled run times.

Color Converter

Convert between HEX, RGB, and HSL color formats. Automatically detects input format and shows all conversions with a live color preview.

Number Base Converter

Convert numbers between Decimal, Hexadecimal, Octal, and Binary bases. Supports large numbers via BigInt and validates input digits for each base.

2

Generate random v4 UUIDs (GUIDs) instantly in your browser

Lorem Ipsum Generator

Generate lorem ipsum placeholder text in paragraphs, sentences, or words

3

Convert JSON data to YAML format instantly

Convert YAML data to JSON format with configurable indentation

Validate YAML syntax and get detailed error messages

3

Format and beautify XML with customizable indentation

Convert XML data to JSON representation

Convert JSON data to XML format instantly

1

Format and beautify SQL queries with support for multiple dialects and customizable options

5

Generate lexicographically sortable, time-ordered ULIDs (Universally Unique Lexicographically Sortable Identifiers) in your browser

NanoID Generator

Generate compact, URL-safe NanoIDs with a configurable alphabet and length — a smaller, faster alternative to UUID

Generate collision-resistant, horizontally scalable CUID and CUID2 identifiers in your browser

Bulk UUID Generator

Generate hundreds or thousands of UUIDs in bulk. Supports UUID v1, v4, and v7 with copy-all and .txt download

Validate a UUID and inspect its version, variant, timestamp, and raw byte layout