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Dictionaryinternet slang

What does TL;DR mean?

TL;DR = Too Long; Didn't Read

Short for “too long; didn’t read” — a one-line summary at the top or bottom of a long post.

TL;DR is the courteous summary tag for long-form posts on Reddit, X threads, blog comments and Slack messages. It gives readers the headline in one line so they can decide whether to read the rest.

Two formats: a writer-led summary at the start (“TL;DR: the menu changed, here’s the new one”) or a polite request from a reader (“tl;dr?” when they want someone else to summarise).

Often written without the semicolon as “TLDR” or “tldr”.

Examples

How TL;DR reads in the wild.

  • “TL;DR: skip the cardio, go straight for compound lifts”
  • “tldr the chef changed and the menu is better than ever”

Where you’ll see it

RedditXHacker NewsSlack

Common questions

What does TL;DR mean?

TL;DR stands for "Too Long; Didn't Read". Short for “too long; didn’t read” — a one-line summary at the top or bottom of a long post.

How is TL;DR used?

TL;DR is the courteous summary tag for long-form posts on Reddit, X threads, blog comments and Slack messages. It gives readers the headline in one line so they can decide whether to read the rest. Two formats: a writer-led summary at the start (“TL;DR: the menu changed, here’s the new one”) or a polite request from a reader (“tl;dr?” when they want someone else to summarise). Often written without the semicolon as “TLDR” or “tldr”.

Where will I see TL;DR?

TL;DR is commonly used on Reddit, X, Hacker News, Slack.

For business owners

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Related slang

FYI

Short for “for your information” — used to share an informational note.

DYK

Short for “did you know” — used to lead into a fun fact or surprising piece of information.

FWIW

Short for “for what it’s worth” — a softener before offering an opinion or piece of info.

IMO

Short for “in my opinion” — a quick way to flag a personal take.

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