PDF417 Barcode Generator Generate PDF417 stacked linear barcodes from text, IDs, shipping labels, or any structured data. PDF417 is the standard barcode format for US driver’s licences, boarding passes, and government IDs. Configure error correction level, column count, row height, and module scale, then download the result as a PNG. How to Use Enter your ...
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 »Aztec Code Generator Generate Aztec Code 2D barcodes from any text, URL, or structured data. Aztec codes are used in boarding passes, transit tickets, and ID documents due to their compact size and high damage tolerance. Configure error correction level and module size, then download the barcode as a PNG. How to Use Enter your ...
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 »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 »API Signature Generator Generate HMAC-based API request signatures for webhook verification, API authentication, and request signing. Supports HMAC-SHA1, HMAC-SHA256, and HMAC-SHA512 with secret keys in plain text or hexadecimal format, outputting both hex and Base64 signatures for immediate use in HTTP headers or query parameters. How to Use Enter the message or data to sign ...
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 »JSON to TypeScript Interface Generator Instantly convert any JSON object or array into clean, ready-to-use TypeScript interfaces. Paste your JSON, configure your preferred export style, and get properly typed definitions with nested interfaces, optional fields, and union types — all generated client-side in real time. How to Use Paste your JSON data into the input ...
Try the Tool »cURL Command Builder Build complete, ready-to-run cURL commands using a visual form instead of remembering flag syntax. Select your HTTP method, add headers, configure authentication, set a request body, and get a properly formatted curl command that you can copy and paste directly into your terminal. How to Use Enter your target URL and select ...
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 »OpenAPI / Swagger Spec Validator Validate your OpenAPI 3.0, 3.1, or Swagger 2.0 specifications instantly. Paste YAML or JSON, get a structured list of errors and warnings with JSON Pointer paths, and pretty-print your spec for clean documentation. How to Use Paste your OpenAPI or Swagger spec into the input field. The validator automatically detects ...
Try the Tool »Base58 Encoder / Decoder Encode and decode Base58 strings used in Bitcoin addresses, IPFS CIDs, and other blockchain systems. Supports multiple alphabet variants and Base58Check with SHA-256d checksum verification. How to Use Switch between Encode and Decode modes. For encoding, enter text (UTF-8) or hex data and select your Base58 variant. For decoding, paste a ...
Try the Tool »WHOIS Domain Lookup Look up domain registration details using the modern RDAP protocol. Enter any domain to see its registrar, registration and expiry dates, name servers, DNSSEC status, and domain status codes with human-readable explanations. How to Use Type a domain name (e.g., example.com) and click Lookup. The tool queries the RDAP registry to fetch ...
Try the Tool »Table to Markdown Converter Convert HTML tables, CSV data, or TSV files into properly formatted Markdown tables with aligned columns. Paste your data, adjust column alignment, and get clean Markdown output instantly. How to Use Select your input format (HTML, CSV, or TSV) and paste your table data. The tool parses the input and generates ...
Try the Tool »ENV File Parser & Formatter Paste your .env file contents and instantly parse, validate, and reformat environment variables. The parser highlights issues like duplicate keys, empty values, and invalid lines — all without your data ever leaving the browser. How to Use Paste your raw .env file content into the input field. The tool automatically ...
Try the Tool »LZ4 Compression Encoder/Decoder Compress and decompress data using the LZ4 algorithm directly in your browser. LZ4 is one of the fastest lossless compression algorithms, prioritizing speed over compression ratio — ideal for real-time data processing, log compression, and streaming applications. How to Use Select the operation mode — Compress or Decompress. Paste your text into ...
Try the Tool »Brotli Compression Encoder/Decoder Compress and decompress data using Google’s Brotli algorithm directly in your browser. Brotli delivers significantly better compression ratios than Gzip — often 20-30% smaller output — making it the preferred choice for web content delivery via HTTP Content-Encoding. How to Use Choose between Compress or Decompress mode. Enter your text in the ...
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 Jun 24, 2026
Help us continue providing valuable free tools
