Browse Tools by Category

Convert JSON objects to clean YAML configuration strings or parse YAML back to structured JSON.

Generate Google Structured Data JSON-LD schemas for Articles, FAQs, Products, LocalBusiness, and Breadcrumbs.

Generate, decode, and verify JSON Web Tokens (JWT) with custom payload claims, secret signatures, and HMAC-SHA256 100% locally.

Analyze text content for top 1-word, 2-word, and 3-word keyword density percentages to avoid keyword stuffing.

Count total lines, empty lines, non-empty lines, average line length, and longest lines in any text document.

Convert rich markdown text to clean, semantic HTML markup in real-time with visual preview pane and instantaneous code copying.

Generate custom placeholder text, paragraphs, words, sentences, and HTML lists for web design layouts and content prototyping.

Generate dummy Markdown articles with headers, lists, code blocks, and blockquotes for testing content systems.

Generate realistic dummy user datasets (Name, Email, Phone, Address, Company) in structured JSON format.

Build high-converting Open Graph and Twitter Card tags to ensure your content looks rich when shared on Facebook, Twitter, and LinkedIn.

Analyze password strength entropy, crack estimation time, character diversity, and vulnerability metrics.

Calculate percentage increases, percentage differences, store discount prices, and profit margins.

Convert pixel values (px) to responsive REM and EM CSS units based on custom root font sizes.

Test JavaScript regular expression patterns against test text with live match highlighting, capture groups, and flag controls.

Calculate responsive web canvas sizes, scaling factors, and container dimensions for web layouts.

Reverse entire text strings, reverse word order, reverse character order, or flip text upside down.

Easily create custom robots.txt files for search engine crawlers (Googlebot, Bingbot) with crawl-delay and disallow path settings.

Convert decimal numbers to Roman numerals (e.g. 2026 to MMXXVI) and decode Roman numerals back to numbers.

Generate secure 2048-bit or 4096-bit RSA public and private key pairs for SSH and SSL completely client-side.

Generate cryptographically secure random API keys, secrets, hex tokens, and OAuth string keys.

Instantly generate highly secure, random passwords with custom lengths and character types locally in your browser.

Convert titles, strings, and text into clean, SEO-friendly URL permalinks with custom separators and stopword filtering.

Test SEO page title (max 60 chars / 580px) and meta description (max 160 chars / 990px) pixel lengths against SERP limits.

Format raw or minified SQL queries into clean, indented code with syntax highlighting for MySQL, PostgreSQL, and SQLite.

Create seamless SVG geometric patterns, grids, and dots for web backgrounds with instant CSS export.

Clean XML metadata, editor namespaces, comments, and whitespace from SVG files to shrink file sizes.

Convert SVG vector code or SVG files into high-resolution PNG or JPEG raster images.

Generate valid test credit card numbers (Visa, Mastercard, Amex) using the Luhn algorithm for payment testing.

Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, and PascalCase.

Compare two text files or code snippets side-by-side to highlight added, removed, and modified lines.