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Refined Twitter improves the Twitter experience by removing cruft and adding useful features.

Available for Chrome, Firefox, Opera.

Some of the best features are: Embedding linked Instagram photos directly in the tweet, syntax highlighting of code blocks, auto-loads new tweets in the stream if you're scrolled to the top, removes promoted tweets.

Refined Twitter
Refined Twitter
A browser extension that improves the Twitter experience
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Refined GitHub
Refined GitHub
Browser extension that makes GitHub cleaner & more powerful