Serialize and Unserialize PHP arrays and others strings.
Base64 encode your images (jpg, gif, png, svg, etc.) to include them directly in a CSS style sheet.
Base64 decode Url Safe.
Urlencode & urldecode
Use JSON Edit to compose your JSON object strings.
Use JsFiddle to develop simple CSS and jQuery snippets.
Verify the availability of a website from various locations.
View if and IP is blacklisted for sending emails.
Detect which platform is used for a web site