SECURITY

Hash (MD5, SHA, CRC) Password Generator Captcha Recognition UUID Generator

LINUX/UNIX

Setup SSH Key Login Change Hostname

EXCEL

Convert To

PHP Array JSON SQL HTML Table Property List(.plist)

PHP

Array from var_dump() serialize() / unserialize()

NETWORK

Current IP Address & Location WHOIS DDNS Send to WhatsApp Number

CONVERSION

Traditional Chinese and Simplified Chinese Timestamp Base64 JSON HEX File Size Cheque Amount to Words

CALCULATION

SMS Length and Segments Calculator Hong Kong Octopus Card No. Checksum Calculation

EXTERNAL

JSFiddle | test your javascript, css, html moqups | mockup/wireframe tool invision | prototyping tool Regex 101 | regex tester masOS CUPS | default printing settings Google Fonts Awesome JS | a collection of javascript libraries SVG Minify ApexCharts | free js chart library App Icon Generator