Developer Tools

Format, validate, and beautify JSON data with real-time error detection. Supports pretty print, minify, and sample JSON file loading.

Format and beautify XML documents with proper indentation, tag nesting validation, and minification.

Format and beautify HTML code with proper tag indentation, void element handling, and one-click minification.

Format, beautify, or minify CSS code. Proper indentation for selectors, properties, and media queries.

Format SQL queries with keyword uppercasing, proper clause indentation, and multi-dialect support.

Format and validate YAML with consistent 2-space indentation, key alignment, and comment preservation.

Format and beautify JavaScript code with proper bracket alignment, semicolons, and consistent spacing.

Write and preview Markdown with live rendering. Supports line breaks, bullet points, blockquotes, tables, and GFM syntax.

Convert between YAML and JSON formats with validation. Essential for Docker, Kubernetes, and CI/CD config management.

Convert CSV tabular data to JSON arrays or JSON back to CSV. Handles headers, custom delimiters, and Excel-compatible output.

Convert XML documents to JSON or JSON back to XML. Handles attributes, namespaces, and CDATA sections.

Encode text to Base64 or decode Base64 strings. Supports UTF-8, URL-safe Base64, and hex conversion.

Encode special characters for safe URL usage or decode percent-encoded strings back to readable text.

Convert special characters to HTML entities or decode entities back to text. Prevents XSS and ensures proper rendering.

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

Convert Markdown to clean HTML or reverse HTML back to Markdown syntax. Supports GFM tables, task lists, and code blocks.

Generate UUID v4 (random), UUID v7 (time-sorted), and ULID identifiers in bulk with one-click copy.

Generate cryptographically secure passwords with configurable length, character sets, and entropy calculation.

Generate SHA-1, SHA-256, and SHA-512 cryptographic hashes from any text input in real-time.

Build cron expressions visually with human-readable explanations and preset schedules like "every 5 minutes" or "Monday at 9am".

Generate placeholder text in paragraphs, sentences, or words. Perfect for design mockups and layout testing.

Generate QR codes from text, URLs, WiFi credentials, or any data. Download as PNG with customizable size.

Generate harmonious color palettes from any base color. Supports complementary, analogous, triadic, and monochromatic schemes.

Generate JWT tokens with custom claims, expiration, and signing secrets for API development and testing.

Validate JSON syntax with detailed error messages including line numbers, error type, and fix suggestions.

Test regular expressions with real-time match highlighting, capture groups, and a library of common patterns for email, URL, IP, and more.

Decode JWT tokens to inspect header (algorithm), payload (claims), and check expiration status — all client-side.

Validate email address format against RFC 5322 standards. Batch validate multiple addresses with detailed error reporting.

Validate URL format and parse into components: protocol, hostname, port, path, query parameters, and fragment.

Validate XML well-formedness: proper tag nesting, attribute quoting, encoding, and single root element.

Validate YAML syntax with real-time error detection. Catches indentation errors, tab usage, and duplicate keys.

Validate HTML markup for unclosed tags, improper nesting, deprecated elements, and missing accessibility attributes.

Compare two texts side by side with color-coded additions, deletions, and unchanged lines. Works with code, configs, and documents.

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

Count total lines, blank lines, non-empty lines, unique lines, and duplicates. Remove blanks or duplicates with one click.

Count words, characters (with/without spaces), sentences, paragraphs, and estimate reading and speaking time.