Web developer tools
Validators, generators and converters
HTML/CSS/JS unquoted attribute value validator
Ambiguous ampersand checker for HTML
Custom HTML element name validator
CSS escaper
Unquoted CSS font family name validator
JavaScript escaper
JavaScript operator precedence
JavaScript variable name validator
JavaScript property name validator
Punycode IDN domain name converter
HTML entity encoder/decoder
URL encoder/decoder
Legacy HTML color value previewer (
bgcolor
,
text
,
link
,
vlink
, and
alink
attribute values)
Base64 encoder/decoder
UTF-8 encoder/decoder
WTF-8 encoder/decoder
Quoted-Printable
encoder/decoder
Q
encoder/decoder
Binary ↔ ASCII converter
Bacon’s cipher encoder/decoder
JavaScript regular expression transpiler
String reverser
Miscellaneous
String length & UTF-8 byte counter
Lua minifier
brainfuck minifier
Twitalics
External (not mine)
text-shadow
and
sassy mothereffing text-shadow
HSL
Drag & drop animated GIF creator