The Ultimate Toolbox for Modern Developers

Format, validate, beautify, and minify JSON with tree viewer and syntax highlighting.

Beautify, format, and indent complex SQL queries for PostgreSQL, MySQL, SQLite, and Transact-SQL.

Beautify, indent, and minify HTML markup with tag preservation and attribute alignment.

Beautify and minify CSS stylesheets with rule grouping and property sorting.

Convert Unix epoch timestamps (seconds & milliseconds) to human-readable date and time formats.

Convert colors seamlessly between HEX, RGB, HSL, HSV, and CMYK formats with visual color picker.

Convert seamlessly between JSON and YAML formats with syntax validation and indentation controls.

Convert JSON arrays to CSV spreadsheets and parse CSV files into structured JSON objects.

Convert numbers across Decimal, Binary, Hexadecimal, and Octal formats with bitwise representations.

Convert data storage units across Bytes, KB, MB, GB, TB, PB with Decimal (1000) and Binary (1024) standards.

Convert raw cURL terminal commands into JavaScript Fetch, Python Requests, Go HTTP, and Axios code snippets.

Encode and decode plain text and files to/from Base64 with UTF-8 and URL-safe support.

Encode and decode query strings and special characters for safe HTTP URL transmission.

Encode special characters into HTML entities (<, >, &) and decode entities back to plain text.

Generate cryptographically random UUID v4, time-based v1, and modern v7 identifiers in bulk.

Generate strong, unhackable passwords using browser-native cryptographic randomness.

Generate high-resolution custom QR codes for URLs, WiFi credentials, plain text, and emails with PNG/SVG download.

Generate placeholder dummy text by paragraphs, sentences, words, or lists for UI design and mockups.

Convert any text, title, or Vietnamese string into a clean, SEO-friendly URL slug.

Decode and inspect JWT header, payload claims, expiration time, and signature algorithm safely in your browser.

Generate MD5, SHA-1, SHA-256, SHA-512, CRC32, and Bcrypt hashes powered by Go backend & WebCrypto.

Query domain DNS records (A, AAAA, CNAME, MX, TXT, NS) with fast Go backend resolver.

Inspect SSL/TLS certificate validity, expiration date, issuer, cipher suite, and TLS protocol version.

Inspect HTTP response headers, status codes, latency, and security headers of any URL.

Find your public IP address, detect IPv4/IPv6, and perform forward and reverse DNS lookups.

Test and debug regular expressions in real-time with visual match highlighting and capture groups.

Compare two text files or code snippets side-by-side with line-by-line and character diff highlighting.

Live markdown editor with synchronized split-screen preview, GitHub Flavored Markdown (GFM) support, and HTML export.

Convert text between camelCase, snake_case, kebab-case, PascalCase, CONSTANT_CASE, and Title Case.

Comprehensive, searchable cheat sheet of all standard HTTP response status codes with detailed explanations.

Build and translate standard 5-part and 6-part Cron expressions into human-readable schedules with next execution times.

Searchable dictionary of standard MIME types, HTTP Content-Type headers, and associated file extensions.