You can filter image hashes via 4chan-X. Existing md5 lists linked on /qa/:
- /qa/ md5 megalist (frogs, mutts, log, barneyfag, goldface and other shitpost avatars):
https://paste2.org/IvV99y7H- categorized but much smaller list of the same content:
https://pastebin.com/raw/93sjURPL (included in above)
- logposters + pissposters:
https://pastebin.com/snZLH12s (included in megalist)
Regex Resources:
https://regexone.com/http://reg-exp.com/ Not everything is supported, but it's a good tool.
http://www.regular-expressions.info/ This one has pretty in depth explanations.
http://www.zytrax.com/tech/web/regex.htmUse forward slashes to start using regular expression; put an 'i' at the end to ignore capitalization; put an 'm' at the end to make the regex consider newlines '\b' is a word boundary, so you can do something like /\bhi\b/ to only filter the word hi but not high (more reading
https://www.regular-expressions.info/refwordboundaries.html).
Javascript's regular expresion engine has the following constraints:
-No \A or \Z anchors to match the start or end of the string. Use a caret or dollar instead.
-Lookbehind is not supported at all. Lookahead is fully supported.
-No atomic grouping or possessive quantifiers.
-No Unicode support, except for matching single characters with \uFFFF.
-No named capturing groups. Use numbered capturing groups instead.
-No mode modifiers to set matching options within the regular expression.
-No conditionals.
Post screenshots of your user style and or show us some neat tricks!
Tools:
https://github.com/ccd0/4chan-xhttps://github.com/nebukazar/OneeChanhttp://tampermonkey.net/Style tools:
Color Pallet:
http://paletton.com/Gradient Editor:
http://www.colorzilla.com/gradient-editor/Border Editors: (works great for reply windows)
http://www.cssmatic.com/box-shadowText Shadow Generator:
http://css3gen.com/text-shadow/Add custom mouse cursors with CSS:
https://developer.mozilla.org/en-US/docs/Web/CSS/cursor 
