Utilities for web developers.
Base64 encoder and decoder for text and files with drag & drop support. URL-safe encoding, live preview, and multi-line processing for web development and APIs.
URL encoder and decoder for query parameters and components. Parse protocol, host, path. Support for encodeURI and encodeURIComponent methods
Encode and decode HTML entities. Convert special characters to HTML entity codes and vice versa with support for named and numeric entity references.
Decode and analyze JSON Web Tokens (JWT) with detailed header, payload, and signature inspection. Validates JWT structure and provides Base64 decoding insights.
Convert international domain names to Punycode and back. IDN converter supporting Unicode domains for DNS compatibility and email address encoding.
Format, validate and beautify JSON. Minify JSON, view the tree structure, auto-fix common errors and extract values by path, all in your browser.
Beautify and format HTML, CSS, JavaScript, XML, SQL code. Beautify or minify with customizable indentation and auto-format as you type.
Convert between JSON, XML, YAML and CSV formats and Unix timestamps. Format conversion with clear error messages and customizable output formatting.
Convert pixels to rem, em and percent units for responsive CSS. PX to REM calculator with custom base font size, quick values and a conversion table.
Calculate missing dimensions from aspect ratios. Generate CSS code with modern aspect-ratio property or legacy padding-bottom technique. Includes 16:9, 4:3, 21:9 presets.
Generate v1, v4, v7 and NIL UUIDs using cryptographically secure random numbers. Bulk generation with multiple output formats for databases and APIs.
Create strong, random passwords with customizable length and character sets. generator with strength meter and multiple password generation.
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes for text and files. Cryptographic hash generator with HMAC support and file integrity verification.
Generate Lorem Ipsum placeholder text with customizable paragraphs, sentences and words. Combine types freely and copy with one click for mockups and layouts.
Create custom QR codes. QR code generator supporting URLs, text, WiFi, vCard with SVG/PNG download, color customization and error correction.
Escape and unescape strings for HTML, JavaScript, JSON, SQL, CSV, XML. String escaping tool with auto-processing and character and byte counting for developers.
Complete HTML character entity reference with 2,231+ symbols, arrows, and mathematical operators. Search by name, decimal, hex, or Unicode for web development.
Searchable emoji reference with Unicode codes and developer-focused categories. Browse, search and copy over 200 curated emojis or their HTML codes.
Test regular expressions with match highlighting and capture groups. JavaScript regex tester with all flags (g, i, m, s, u, y) and exportable results.
Generate Subresource Integrity (SRI) hashes for CDN resources. SHA-256, SHA-384, SHA-512 support with ready-to-use script and link HTML tags.
