HTML Validator Validate your HTML markup instantly for syntax errors and W3C compliance. This free online HTML validator checks for unclosed tags, missing required attributes, deprecated elements, duplicate IDs, invalid nesting, and structural issues — all in real time as you type. How to Use 1. Paste your HTML code into the input textarea, or ...
Try the Tool »HTML Formatter and Beautifier Transform minified or messy HTML into clean, properly indented code. This tool takes raw HTML — whether compressed for production, copied from browser DevTools, or generated by a CMS — and formats it with consistent indentation and line breaks for easy reading and editing. How to Use Paste your HTML into ...
Try the Tool »ZIP Code Validator Quickly validate US ZIP codes to check whether they follow the correct 5-digit or ZIP+4 format. Paste one or multiple ZIP codes and get instant validation results with clear valid/invalid badges. How to Use Enter one or more US ZIP codes in the input field, one per line. The tool automatically validates ...
Try the Tool »IMEI Number Generator Generate valid IMEI (International Mobile Equipment Identity) numbers for testing and development purposes. Each generated IMEI uses realistic Type Allocation Code (TAC) prefixes from known manufacturers and a valid Luhn check digit, making them structurally correct for software testing, QA validation, and educational use. How to Use Select a manufacturer from the ...
Try the Tool »WebAuthn Credential ID Generator Generate cryptographically secure WebAuthn credential IDs in Base64url format, or decode existing credential IDs to inspect their raw bytes. Set the byte length (16–64 bytes), generate multiple IDs in a batch, and decode any Base64url credential ID to see its byte count and hex representation. How to Use Set the byte ...
Try the Tool »CSV Formatter & Column Aligner Format and align CSV data with two output modes: RFC 4180 normalized CSV with proper quoting and escaping, or pretty-printed column-aligned display for human readability. Includes delimiter auto-detection, data preview table, validation, and export to JSON, Markdown table, and SQL INSERT statements. How to Use Paste your CSV data into ...
Try the Tool »Nginx Config Formatter & Beautifier Format and beautify Nginx configuration files with consistent indentation, block nesting, and syntax validation. Paste your nginx.conf content and instantly see properly formatted output with a structural overview of your server blocks, locations, and upstreams. Includes common snippet templates and a directive reference. How to Use Paste your Nginx configuration ...
Try the Tool »Geo Distance Calculator Calculate the exact great-circle distance between two geographic coordinates using the Haversine or Vincenty formula. Enter locations as decimal degrees or DMS (degrees, minutes, seconds), get results in kilometers, miles, nautical miles, meters, and feet — plus initial bearing and an interactive map. How to Use Select your input mode (decimal degrees ...
Try the Tool »Podcast & Audio File Size Calculator Quickly estimate how large your podcast episodes or audio files will be before recording or exporting. Enter the duration, audio format, and quality settings to get an instant file size estimate along with monthly storage and bandwidth projections for podcast hosting. How to Use 1. Enter the audio duration ...
Try the Tool »JSON to PHP Array Converter Convert JSON data to PHP array syntax instantly. This tool takes any valid JSON input and outputs clean PHP array code, with support for both modern short syntax [] and legacy array() notation. Perfect for developers who need to quickly convert API responses, config files, or data structures from JSON ...
Try the Tool »SQL Minifier The SQL Minifier compresses your SQL queries by stripping out comments, collapsing whitespace, and removing unnecessary formatting — all while preserving string literals and quoted identifiers. Ideal for reducing query size before embedding in application code or transmitting over the network. How to Use Paste your SQL query into the input textarea, or ...
Try the Tool »YAML Validator Validate your YAML files instantly for syntax correctness. Paste your YAML content and get real-time feedback with detailed error messages including line numbers and column positions to help you quickly find and fix issues. How to Use 1. Paste or type your YAML content into the input field. 2. The validator automatically checks ...
Try the Tool »KSUID Generator Generate KSUIDs (K-Sortable Unique Identifiers) or decode existing ones to extract their embedded timestamp and random payload. KSUIDs are 27-character Base62 strings that are lexicographically sortable by creation time, combining a 4-byte Unix timestamp with 16 bytes of random data. How to Use Set the count (1–10) to generate multiple KSUIDs at once, ...
Try the Tool »INI File Formatter & Beautifier Format and beautify INI configuration files with consistent spacing, value alignment, section sorting, and comment normalization. Paste your INI content and instantly see formatted output with validation warnings for common issues. Download as .ini or .cfg file. How to Use Paste your INI file content into the input area. The ...
Try the Tool »Markdown Table Formatter & Aligner Format and align Markdown tables with perfectly padded columns. Paste a messy Markdown table and instantly get clean, aligned output with equal column widths. Includes a rendered HTML preview, export to CSV/HTML/JSON, and validation for common table issues. Handles multiple tables in one input. How to Use Paste your Markdown ...
Try the Tool »CSS Glassmorphism Generator Create stunning frosted glass effects with a live visual editor. Adjust backdrop blur, background transparency, border opacity, border radius, and box shadow in real time and see the result instantly on a colorful preview. Copy the generated CSS or a complete HTML+CSS snippet ready for your project, with vendor prefixes for cross-browser ...
Try the Tool »CSS Transform Generator Visually build CSS transform properties with live preview. Adjust 2D and 3D transform sliders for rotate, scale, skew, translate, and perspective, then copy the generated CSS. Includes a transform-origin grid picker, animation preview toggle, and one-click presets for common effects like flips and tilts. How to Use Drag the sliders to adjust ...
Try the Tool »CSS to JavaScript Style Object Converter The CSS to JavaScript Style Object Converter transforms CSS declarations into JavaScript style objects and back. Whether you’re working with React inline styles, React Native StyleSheets, or CSS-in-JS libraries like styled-components and Emotion, this tool handles the conversion instantly — no more manual camelCase rewriting. How to Use Paste ...
Try the Tool »HTTP Request Header Builder Build HTTP request headers visually. Add common headers from a dropdown (Authorization, Content-Type, Accept, Cache-Control, etc.), configure authentication (Bearer token, Basic auth, API key), and add custom headers. The output is a ready-to-copy header block formatted for curl, fetch, or any HTTP client. How to Use Use the Add Common Header ...
Try the Tool »Word Frequency Analyzer Analyze the word frequency of any text — paste content and instantly see a ranked frequency table, word cloud visualization, text statistics, and character frequency breakdown. Supports n-gram analysis (bigrams, trigrams), stop word filtering, and export to CSV, JSON, or plain text. All processing happens in your browser. How to Use Paste ...
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Scoreboard is a fun way to keep track of your games, all data is stored in your browser. More features are coming soon!
Update: Our latest tool was added on Jun 26, 2026
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