Reddit post titles cap at 300 characters

The counter above measures your title against Reddit's 300-character cap. Self-post bodies are effectively unlimited by comparison, which is why the title is the field worth agonising over.

It runs entirely in your browser, so a draft for a subreddit you have not posted to yet stays on your machine.

Reddit post titles cap at 300 characters and the counter measures against that. The self-post body runs to 40,000 characters by comparison, which inverts the usual advice: on Reddit the title carries almost the entire job of getting the post opened, and the body only matters to people the title already convinced.

Three hundred characters is far more than a good Reddit title needs. Titles that work read like something a person would say out loud, state the specific situation, and stay away from the headline voice that performs well on LinkedIn. A title that sounds like marketing gets downvoted before anyone reaches the body.

Hashtags do nothing on Reddit. There is no hashtag index, so a tag is wasted characters that mark the post as a paste from somewhere else. What matters instead is the subreddit and, in many communities, a required flair. WriteOnce stores the subreddit and the flair on the scheduled post so it publishes correctly rather than needing a manual fix afterwards.

Every subreddit then adds rules the sitewide limit knows nothing about: title formats, required tags in brackets, self-promotion ratios, minimum account age. Read the sidebar before writing the title, because a post that breaks the format gets removed regardless of how comfortably it fits inside 300 characters. Profile bios cap at 200 characters.