Encoding
Convert between text encodings and data formats
Tools in this category
11
Base64 Encode / Decode
Convert text to and from Base64, full Unicode support.
URL Encode / Decode
Percent-encode or decode URL special characters.
HTML Entities
Escape and unescape HTML special characters.
Unicode Escape
Convert characters to \uXXXX escapes and back.
Text to Binary
Convert text to a binary string and back.
NATO Alphabet
Spell out letters using NATO phonetic alphabet.
Roman Numerals
Convert Arabic and Roman numerals.
Numeronym Generator
Turn long words into spoken-style numeronyms.
String Obfuscator
Insert zero-width characters to obscure text.
ASCII Text Art
Render text as ASCII banner art.
SafeLink Decoder
Unwrap Microsoft SafeLink redirect URLs.
Browse all categories
Hash & Crypto13
Hashing, key generation and encryption checks
Data & Format12
Convert and beautify JSON, XML, YAML, CSV
Developer22
Regex, cron, JWT, SQL and everyday dev helpers
Network8
IP, subnet, MAC and port calculations
Text6
Case, stats, dedupe and cleanup for text
Image & Media6
QR codes, placeholders and image helpers
Everyday9
Percentages, temperature, dates and units
Reflex4
Hand-eye coordination and reaction speed
Memory3
Sequence and working memory training
Focus2
Sustained attention and rhythm control
Puzzle1
Logic, pattern recognition and thinking games