What is the Threads character limit?

The Threads character limit is 500 characters for all post types, including original posts, replies, and quote reposts. This is higher than Twitter/X (280 characters) and Bluesky (300 characters). URLs count toward the limit as written.

How many images can you post on Threads?

Each Threads post supports up to 10 images and/or videos. You can mix images and videos in the same post. Multiple media items display as a scrollable carousel in the feed.

What is the Threads bio character limit?

The Threads bio is synced directly from your Instagram profile and is limited to 150 characters. You cannot set a separate bio for Threads -- changes to your Instagram bio are automatically reflected on Threads.

Does Threads support hashtags?

Yes, Threads supports hashtags for content discovery. There is no hard limit on the number of hashtags per post, but they count toward the 500-character post limit. Using 2-3 targeted hashtags is generally more effective than stuffing a post with many.

How long can Threads videos be?

Videos on Threads can be up to 5 minutes long per attachment. You can include up to 10 videos (or a mix of images and videos) in a single post.

Threads Character Limits and Post Specs Guide (2026)

Threads posts are limited to 500 characters. Each post supports up to 10 images or videos as attachments. Bios on Threads are shared directly from your Instagram profile (up to 150 characters). Replies follow the same 500-character limit as original posts, and Threads supports both hashtags and @mentions.

Published April 10, 2026

Threads Character Limit Quick Reference

Field	Limit	Notes
Post text	500 characters	Original posts and reposts with quotes
Reply text	500 characters	Same limit as original posts
Bio / Description	150 characters	Synced from your Instagram profile
Link in bio	1 link	Synced from Instagram profile
Images per post	10 images/videos	Can mix images and videos
Video length	Up to 5 minutes	Per video attachment
Hashtags	No hard limit	Support tagging and discoverability

Threads Post Character Limit

Every post on Threads is limited to 500 characters. This limit applies to original posts, replies, and quote reposts. Links count toward the 500-character limit as written -- Threads does not auto-shorten URLs, so long links consume a meaningful portion of your character budget.

The 500-character limit gives Threads a noticeably more conversational and flexible feel compared to Twitter/X (280 characters) or Bluesky (300 characters), allowing for more complete thoughts without requiring thread chains for simple ideas.

Instagram Integration and Bio Limits

Threads is built by Instagram and is tightly integrated with your Instagram account. Your Threads profile bio, profile picture, and username are all pulled directly from your Instagram profile. The bio limit is 150 characters, which matches Instagram's bio limit.

Changes to your Instagram bio are reflected on your Threads profile. You cannot set a separate bio specifically for Threads -- the two profiles share a single bio. If you want different messaging on each platform, you'll need to manage that within the shared 150-character bio.

Media Limits: Images and Videos Per Post

Each Threads post supports up to 10 images and/or videos as attachments. Unlike some platforms, Threads allows you to mix images and videos within a single post carousel. Videos can be up to 5 minutes long per attachment.

When a post includes multiple media items, they display as a horizontally scrollable carousel in the feed. The first media item serves as the post thumbnail, so choose the most attention-grabbing image or video frame as the first attachment.

Hashtags and @Mentions on Threads

Threads supports both hashtags and @mentions. Hashtags are clickable and help with content discovery -- users can search for or follow specific hashtags. There is no hard cap on the number of hashtags you can include in a post, but they count toward your 500-character limit.

Mentioning other accounts with @ also counts toward the character limit. Threads' algorithm surfaces content based on engagement and relevance, so excessive hashtag stuffing is less effective than writing genuinely engaging content.

Tips for Threads Content Strategy

The 500-character limit is generous enough for complete thoughts -- avoid breaking ideas into unnecessary thread chains unless the additional context genuinely adds value.

Your Threads bio is shared with Instagram, so write a bio that represents you well on both platforms within the 150-character limit.

Use up to 10 media attachments strategically -- a mix of images and a short video in the same post can significantly boost engagement.

Hashtags count against your 500-character limit, so use 2-3 targeted hashtags rather than stuffing in as many as possible.

Links are not auto-shortened on Threads; shorten long URLs before posting to preserve character space for your actual message.

Reply threads (replying to your own post) work well for multi-part content series, keeping each installment at a focused 500 characters.

Frequently Asked Questions

Schedule Your Threads Posts with postr

Plan and schedule Threads posts in advance with postr. Write content up to the 500-character limit with a live counter and publish on your ideal schedule.

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Threads Image Sizes and Media Specs Guide (2026)

Complete guide to Threads image sizes, video specs, profile picture dimensions, and carousel support. Updated for 2026 with exact specs for high-quality visual content.