🔐 Premium Encoder/Decoder Tool

🔐 Base64 Encoding/Decoding

• Encode: Converts text to Base64 format. Useful for encoding binary data or transmitting data over text-only protocols.
• Decode: Converts Base64 back to original text.
• Use case: Encoding images for data URIs, API authentication, email attachments.

🔗 URL Encoding/Decoding

• Encode: Converts special characters to %XX format for safe URL transmission.
• Decode: Converts %XX encoded characters back to original.
• Use case: Query parameters, form data, API endpoints.

📝 HTML Entity Encoding/Decoding

• Encode: Converts special characters to HTML entities (e.g., < becomes &lt;).
• Decode: Converts HTML entities back to original characters.
• Use case: Displaying user input safely, preventing XSS attacks.

⚙️ Advanced Options

• Preserve Line Breaks: Keeps line breaks in the encoded output.
• Auto-Detect Encoding: Automatically detects the encoding type of input.
• Chunk-Based Encoding: Processes large files in chunks for better performance.
• Batch Mode: Process multiple items (one per line) at once.
• Charset: Choose character encoding (UTF-8, ASCII, Latin-1, UTF-16).

📁 File Operations

• Upload: Click "Upload File" or drag & drop a file to encode/decode.
• Download: Click "Download" to save the output as a file.
• Large Files: Enable "Chunk-Based Encoding" for files over 10MB.

💻 Command-Line Interface

• Encode: encode base64 "your text"
• Decode: decode url "encoded%20text"
• Batch: batch encode html (uses batch input area)

🌐 API Access

• Use the browser console to access window.EncoderAPI
• Methods: encode(type, text), decode(type, text), autodetect(text)
• Example: window.EncoderAPI.encode('base64', 'Hello World')

🔧 Error Handling

• Invalid Base64 will show an error message with details.
• Malformed URLs will be detected and reported.
• Invalid HTML entities will be highlighted.

📜 History

• All encoding/decoding operations are saved in history.
• Click on history items to restore previous results.
• History is stored in browser localStorage.