JSON linter

Validate and format JSON data. Paste your JSON and get properly formatted output.

Base64 Encoder/Decoder

Encode and decode Base64 strings. Essential for API development and data encoding.

URL Encoder/Decoder

Encode and decode URL components. Critical for web development and handling special characters in URLs.

Regex visualizer

Test, visualize, and understand regular expressions with real-time matching, highlighting, and detailed explanations.

Regex tester

Test and validate regular expressions with live matching. Perfect for debugging and learning regex patterns.

UUID generator (v4 - Random)

Generate, validate, parse, and convert UUIDs. Support for v1, v3, v4, v5, v6, v7, and utility functions.

UUID generator (v1 - Timestamp)

Generate timestamp-based UUIDs (v1). Includes MAC address and timestamp information for time-ordered identifiers.

UUID generator (v3 - Namespace MD5)

Generate deterministic UUIDs (v3) using MD5 hashing. Same name and namespace always produce the same UUID.

UUID generator (v5 - Namespace SHA-1)

Generate deterministic UUIDs (v5) using SHA-1 hashing. Same name and namespace always produce the same UUID.

UUID generator (v6 - Reordered Timestamp)

Generate reordered timestamp UUIDs (v6) with improved database indexing performance. Compatible with v1.

UUID generator (v7 - Unix Epoch)

Generate Unix epoch timestamp UUIDs (v7) with monotonic ordering guarantees. Ideal for database primary keys.

UUID validator

Validate UUID format and detect version. Check if a string is a valid UUID and identify its version (v1-v7).

UUID parser

Parse UUID strings into byte arrays. Convert UUID strings to their 16-byte binary representation.

UUID converter

Convert between UUID v1 and v6 formats. Transform timestamp-based UUIDs between different ordering schemes.

JWT decoder

Decode, verify, and create JWT tokens. Essential for debugging authentication and understanding token structure.

JWT decoder

Decode and inspect JWT tokens without verification. View header, payload, and check token expiration status.

JWT verifier

Verify JWT token signatures using symmetric secrets or asymmetric public keys. Supports HS256, RS256, ES256, and more.

JWT encoder

Create and sign new JWT tokens with custom claims, expiration, issuer, and audience settings.

Diff checker

Compare two texts and find the differences. Perfect for code, documents, or any text comparison.

CSV to JSON converter

Convert between CSV and JSON formats. Transform spreadsheet data into structured JSON or vice versa.

JSON to CSV converter

Convert JSON data to CSV format. Transform structured data into spreadsheet-compatible CSV format.

JSON to YAML converter

Convert between JSON and YAML formats. Transform structured JSON into human-readable YAML or vice versa.

YAML to JSON converter

Convert YAML data to JSON format. Transform YAML configuration files into structured JSON for applications.

HTML to Markdown converter

Convert between HTML and Markdown formats. Transform HTML documents into clean Markdown or convert Markdown to HTML for web pages.

Markdown to HTML converter

Convert Markdown to HTML format. Transform Markdown documents into HTML for web pages and applications.

HTTP Status codes

Browse and search HTTP status codes. Complete reference with descriptions, categories, RFC specifications, and links to MDN documentation.

HTML Entities

Browse and search HTML entities. Find character codes, numeric references, and hex codes for special characters.

CSS Colors

Browse and search CSS named colors. Find hex codes, RGB, and HSL values for all CSS color names.