Encoding & Decoding
10 tools to format, validate, and process data in your browser.
Base64 Encoder & Decoder Popular
Stop struggling with Base64 encoding! Encode and decode Base64 data instantly for binary files, text, images, and API tokens. Supports standard and URL-safe formats with file upload and data URI generation. Perfect for embedding images, API development, and data transmission. Free, works offline, handles large files.
Base32 Encoder/Decoder
Stop wrestling with Base32 encoding formats! Encode and decode text using Base32 with RFC 4648, Crockford, Extended Hex, and Z-Base32 variants. Free online tool with custom formatting, padding options, and case handling. Works offline in your browser.
URL Encoder & Decoder Popular
Stop debugging broken URLs because of unescaped spaces and special characters. This tool properly encodes URLs and query parameters so they actually work in browsers and APIs. Handles the space encoding choice (+ vs %20) and knows the difference between full URLs and URL components.
HTML Entity Encoder
Stop XSS attacks and display issues! Encode text to HTML entities instantly with named, numeric, hexadecimal, or smart encoding modes. Converts special characters, quotes, ampersands, and symbols for safe HTML display. Perfect for web development, security, and email templates. Free, works offline, unlimited encoding.
HTML Entity Decoder
Decode HTML entities into readable text characters, supporting named entities, numeric codes, and hexadecimal values with comprehensive validation.
JWT Decoder & Validator Popular
Stop debugging JWT authentication blindly! Decode JSON Web Tokens instantly to inspect headers, payload claims, expiration times, and signatures. Perfect for troubleshooting auth issues and validating token structure. Free, works offline, never uploads your tokens.
String Escape & Unescape
Escape and unescape strings for various programming languages and formats including JavaScript, JSON, HTML, XML, CSS, SQL, RegEx, URL, CSV, and Python.
Emoji Converter
Convert between emoji formats, analyze emoji usage, and search emoji database
SSL/TLS Certificate Decoder
Decode and analyze SSL/TLS X.509 certificates. Extract detailed information including subject, issuer, validity, public key, extensions, and perform security analysis.
Base64 Image Converter
Convert images to Base64 and decode Base64 back to images. Bidirectional converter for embedding and extracting images.
Base64 Encoder & Decoder Popular
Stop struggling with Base64 encoding! Encode and decode Base64 data instantly for binary files, text, images, and API tokens. Supports standard and URL-safe formats with file upload and data URI generation. Perfect for embedding images, API development, and data transmission. Free, works offline, handles large files.
Base32 Encoder/Decoder
Stop wrestling with Base32 encoding formats! Encode and decode text using Base32 with RFC 4648, Crockford, Extended Hex, and Z-Base32 variants. Free online tool with custom formatting, padding options, and case handling. Works offline in your browser.
URL Encoder & Decoder Popular
Stop debugging broken URLs because of unescaped spaces and special characters. This tool properly encodes URLs and query parameters so they actually work in browsers and APIs. Handles the space encoding choice (+ vs %20) and knows the difference between full URLs and URL components.
HTML Entity Encoder
Stop XSS attacks and display issues! Encode text to HTML entities instantly with named, numeric, hexadecimal, or smart encoding modes. Converts special characters, quotes, ampersands, and symbols for safe HTML display. Perfect for web development, security, and email templates. Free, works offline, unlimited encoding.
HTML Entity Decoder
Decode HTML entities into readable text characters, supporting named entities, numeric codes, and hexadecimal values with comprehensive validation.
JWT Decoder Popular
Stop debugging JWT authentication blindly! Decode JSON Web Tokens instantly to inspect headers, payload claims, expiration times, and signatures. Perfect for troubleshooting auth issues and validating token structure. Free, works offline, never uploads your tokens.
String Escape & Unescape
Escape and unescape strings for various programming languages and formats including JavaScript, JSON, HTML, XML, CSS, SQL, RegEx, URL, CSV, and Python.
Emoji Converter
Convert between emoji formats, analyze emoji usage, and search emoji database
SSL/TLS Certificate Decoder
Decode and analyze SSL/TLS X.509 certificates. Extract detailed information including subject, issuer, validity, public key, extensions, and perform security analysis.
Base64 Image Converter
Convert images to Base64 and decode Base64 back to images. Bidirectional converter for embedding and extracting images.
Related categories
› About encoding & decoding
Encode and decode text in various formats Every tool runs client-side, so you can work with internal or sensitive content without upload workflows.
Common workflows include validation, quick conversion, and cleanup for API payloads, docs, spreadsheets, and operational data.