Developer Tools
Common web-development conversions and checks live here: URL and Base64 encoding, HTML entity handling, JSON formatting and validation, and Unix timestamp conversion. These tools link across to related Date & Time and Generator tools, such as the Unix Timestamp Converter linking to the UUID Generator and Date Difference Calculator.
URL Encoder / Decoder
Encode or decode URL component text safely.
B64Base64 Encoder / Decoder
Encode plain text to Base64 or decode Base64 back to text.
{}JSON Formatter & Validator
Validate, pretty-print or minify JSON.
UTCUnix Timestamp Converter
Convert Unix seconds to a date or a local date-time to Unix time.
HTMLHTML Entity Encoder / Decoder
Encode special characters as HTML entities or decode entities back to text.
MDMarkdown to HTML Converter
Convert basic Markdown syntax into HTML markup.
MINHTML Minifier
Remove comments and unnecessary whitespace from HTML.
METAMeta Tag Generator
Generate title, description and viewport meta tags for a web page.
PICKColor Picker
Pick a color visually and get its HEX, RGB and HSL codes.
ROTCaesar Cipher Encoder / Decoder
Encode or decode text with a classic Caesar shift cipher.