Base64 Encode/Decode

Supports Base64 encoding and decoding of text and binary data with URL-safe and MIME format options. Supports Data URL parsing, line-by-line encoding, and automatic format recognition, suitable for API calls, email attachments, and data embedding.

URL Encode/Decode

Supports URL percent encoding and decoding, handling special characters, spaces, and multilingual text. Auto-detects encoding format, supports query parameter processing, suitable for API calls, form submissions, and link sharing.

HTML Escape/Unescape

Supports HTML entity escaping and unescaping, handling special characters and tags. Auto-detects named and numeric entity formats, prevents XSS attacks, suitable for displaying user input, code examples, and secure content processing.

ASCII Converter

Supports bidirectional conversion between characters and ASCII codes, displaying decimal, hexadecimal, binary, and octal values in real-time. Supports batch conversion and control character parsing, suitable for programming development, communication protocol analysis, and teaching demonstrations.

Unicode Converter

Supports bidirectional conversion between characters and Unicode code points, handling emoji, surrogate pairs, and multilingual text. Auto-detects multiple formats (U+, \u, 0x, decimal), suitable for character encoding debugging, data analysis, and security detection.

Base Converter

Supports number conversion between binary, octal, decimal, and hexadecimal, automatically recognizing 0b/0o/0x prefixes. Instant linked updates, suitable for programming debugging, bitwise operation learning, and permission bit conversion.