Enhance your productivity with our handy online utility tools. Simplify your tasks and streamline your workflow efficiently.
URL Opener Open multiple URLs at once by pasting a list and clicking a single button. Instead of opening links one by one, paste your entire URL list and let this tool open them all in new browser tabs simultaneously. Ideal for QA testing, checking multiple pages, reviewing search results, or opening a batch of ...
Try the Tool »Open Graph Checker Inspect and preview the Open Graph meta tags on any URL to see exactly how your page will appear when shared on social media. This tool fetches the page, extracts all OG and Twitter Card meta tags, and shows you a visual preview of the social share card — plus flags any ...
Try the Tool »Redirect Checker Trace the full redirect chain for any URL and see every hop along the way. This tool follows redirects from start to finish, showing the HTTP status code, URL, and response time at each step. Essential for debugging redirect chains, verifying SEO migrations, and finding redirect loops before they cause problems. How to ...
Try the Tool »Cron Next-Run Time Calculator Enter a cron expression and instantly see when it will fire next. This tool parses standard 5-field cron expressions, calculates the next scheduled run times, generates a human-readable description, and shows a countdown to the next execution — all in your local timezone and UTC. How to Use Type or paste ...
Try the Tool »Credit Card BIN / IIN Lookup Enter the first 6-8 digits of any credit or debit card number to identify the card network, issuing bank, country of issuance, card type, and category. This tool also includes Luhn algorithm validation to check if a full card number has a valid format. Everything runs in your browser ...
Try the Tool »Twitter / X Character Counter Write and count your tweet with Twitter’s exact character counting rules. This tool applies the same algorithm Twitter/X uses — URLs always count as 23 characters regardless of length, and emoji have weighted counts. Real-time feedback shows remaining characters with color-coded warnings, and thread mode splits long content into multiple ...
Try the Tool »Time Duration Formatter Convert any duration — entered in seconds, milliseconds, or clock format — into multiple human-readable representations simultaneously. See verbose, short, ISO 8601, clock, and approximate formats side by side, with a full breakdown by time unit. How to Use Select your input mode (Seconds, Milliseconds, or Clock hh:mm:ss), enter your duration value, ...
Try the Tool »JWT Expiry & Lifetime Checker Paste a JSON Web Token to instantly check its expiry status, see a live countdown to expiration, and visualize the token’s lifetime on an interactive timeline. Decode all standard claims (iss, sub, aud, exp, iat, nbf) plus custom claims — all without needing the signing secret. Everything runs in your ...
Try the Tool »URL Canonicalizer & Normalizer Normalize URLs to their canonical form following RFC 3986 standards. This tool applies configurable normalization steps — lowercase scheme and host, remove default ports, sort query parameters, resolve dot segments, and more — with side-by-side comparison and diff highlighting to show exactly what changed. How to Use Enter one or more ...
Try the Tool »HTTP Cache TTL / max-age Calculator Build HTTP Cache-Control headers visually. Select a caching strategy preset or configure individual directives — max-age, s-maxage, stale-while-revalidate, immutable, and more. Get a ready-to-use header string with human-readable explanations and CDN-specific equivalents. How to Use Choose a strategy preset (Static Assets, HTML Pages, API Responses, CDN Edge Cache) to ...
Try the Tool »JSON to XML Converter Convert JSON data to well-formed XML instantly. Paste any JSON object or array and get structured XML output with configurable root element names, array handling, indentation, and XML declaration. Handles nested objects, arrays, all JSON types, and special character escaping. How to Use Paste your JSON data into the input area. ...
Try the Tool »HTML to Markdown Converter Convert HTML to clean Markdown instantly. Paste any HTML content — with headings, links, images, lists, tables, code blocks, and formatting — and get well-structured Markdown output ready for documentation, README files, or any Markdown-based platform. How to Use Paste your HTML into the input area. The Markdown output updates instantly. ...
Try the Tool »TSV to JSON Converter Convert tab-separated values (TSV) data to JSON instantly. Paste spreadsheet data or TSV files and get clean, structured JSON output — as an array of objects with headers as keys, or as a simple array of arrays. Handles quoted fields, type inference, and configurable formatting. How to Use Paste your TSV ...
Try the Tool »INI to JSON Converter Convert INI configuration files to structured JSON instantly. Paste INI data with sections, key-value pairs, and comments — get clean JSON output with sections as nested objects. Supports type coercion, comment stripping, duplicate key handling, and dot-notation subsections. How to Use Paste your INI configuration data into the input area. Sections ...
Try the Tool »Number to Words Converter Convert any number into its written word form instantly. Enter a number — from simple integers to decimals and negatives — and get clean, grammatically correct text in English, French, Spanish, or German. Supports cardinal, ordinal, and currency formats. How to Use Type or paste a number into the input field. ...
Try the Tool »Punycode Encoder / Decoder Convert internationalized domain names (IDN) between Unicode and Punycode instantly. Enter a domain with non-ASCII characters like münchen.de and get the ASCII-compatible encoding xn--mnchen-3ya.de, or decode Punycode back to its readable Unicode form. Uses the RFC 3492 Bootstring algorithm for guaranteed-accurate results. How to Use Enter a domain name in the ...
Try the Tool »JSON Schema Validator & Formatter Validate your JSON data against a JSON Schema with precise, detailed error reporting. Paste your data and schema, select the draft version, and get instant feedback — including exact JSON Pointer paths to every validation error. All processing runs client-side, so your data never leaves your browser. How to Use ...
Try the Tool »Color Blindness Simulator & Checker See how your images and color palettes look to people with color vision deficiency. Simulate 8 types of CVD and test your designs for WCAG contrast compliance to ensure accessibility for all users. How to Use Upload an image or enter color values to simulate. Select a color vision deficiency ...
Try the Tool »JSONPath Expression Tester Test and debug JSONPath expressions against your JSON data in real-time. Paste your JSON, write an expression, and instantly see matched results with syntax highlighting and a navigable tree view. How to Use Paste your JSON data in the input panel and type a JSONPath expression. Results update in real-time as you ...
Try the Tool »Luhn Algorithm Validator Validate any number against the Luhn checksum algorithm instantly. Used worldwide to verify credit card numbers, IMEI codes, and other identifiers, this tool gives you guaranteed-correct results with a full step-by-step breakdown. How to Use Enter or paste a number into the input field. The tool validates it in real time as ...
Try the Tool »Add IO tools to your favorite browser for instant access and faster searching
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 May 24, 2026
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