Too long; didn't read. Used either as a request asking someone to summarise a long piece of text, or as a self-applied tag at the top or bottom of one's own post to flag the short version for readers in a hurry. Common on Reddit, Hacker News and email threads, where the "TLDR:" line is often a one-sentence summary of an essay-length comment. Sometimes spelled "tl;dr" with the semicolon preserved.
TLDR: the meeting was a waste of time and we're moving the deadline to next week.
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Viral internet speak — memes, ratios, main-character moments, and the algospeak of every platform from Twitter to Reddit to TikTok comment sections.
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(chiefly, Internet slang) Used to indicate that one did not read a (long) text, or to introduce a short summary of a text perceived as overly long.
Too long; didn't watch. The video equivalent of TLDR — used to ask for or provide a written summary of a long YouTube video, livestream or podcast that the reader didn't have time to watch. Common in comment sections under hour-long video essays and in subreddits that discuss video content.
(chiefly, Internet slang) A summary; the gist, the long and short.
(chiefly, Internet slang) (or sometimes '''too long; don't read''').
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(transitive) To provide a short summary of (a text, an event, etc.); to summarize.