SECURITY

Hash (MD5, SHA, CRC) Password Generator Captcha Recognition Hong Kong Octopus Card No. Checksum Calculation

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

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