The Reddit post title limit
A Reddit post title can be up to 300 characters, and it cannot be edited after posting. Many subreddits add their own rules on top, such as required tags or flair, and moderators remove posts that break them.
How to write a Reddit post title
Check the subreddit's rules before posting, because each community decides what self-promotion it accepts. Titles that share a lesson or ask a real question do better than announcements.
Questions
What is the Reddit post title character limit?
300 characters. The title cannot be edited after posting.
Can I edit a Reddit post title?
No. Reddit lets you edit the body of a text post, but never the title.
Where can I post my startup on Reddit?
Communities like r/SideProject and r/SaaS accept launches with their own rules; read each subreddit's rules first.
Do spaces and emoji count?
Spaces and punctuation count as one character each. This checker counts each visible character once, so an emoji counts as one.
Is my text stored or sent anywhere?
No. The counting happens in your browser and nothing is uploaded.