Threads Image Sizes: The Complete Guide for 2026

Why Threads Image Sizes Matter

Threads launched in July 2023 and passed 200 million monthly active users faster than any social app in history. As the platform matures, creators and brands are discovering that the same rules that apply to Instagram image quality apply here — because Threads is built on the same infrastructure. Upload the wrong size, and Meta's compression engine will aggressively downscale your image, introducing artifacts and reducing sharpness. Upload at the right dimensions, and your content looks exactly as you designed it.

This guide covers every image format Threads supports as of 2026, with the exact pixel dimensions, aspect ratio limits, and file format recommendations for each.

Threads Feed Post Image Dimensions

Threads feed posts support a range of aspect ratios, but the platform enforces a minimum and maximum to prevent extremely tall or extremely wide images from dominating the feed.

• Recommended width: 1080 px. Threads will accept wider images (up to 1440 px) but will down-sample them on display. Uploading at exactly 1080 px avoids any resampling loss.
• Maximum aspect ratio (tall): 4:5 (portrait). A 1080 × 1350 px image — the same as Instagram's recommended portrait post — is the tallest image Threads will display without cropping.
• Maximum aspect ratio (wide): 1.91:1 (landscape). A 1080 × 566 px image — also matching Instagram's landscape limit — is the widest you can go before the image is cropped to fit.
• Square: 1080 × 1080 px (1:1). Always safe, always displayed without cropping. Good default if you cross-post between Instagram and Threads.

If you upload an image taller than 4:5, Threads will crop it to 4:5 from the center. If you upload one wider than 1.91:1, it will be cropped to 1.91:1. Design within these bounds to stay in control of your composition.

Threads Profile Picture Size

Threads profile pictures are shared with your Instagram account — they are the same image. The displayed size is 96 × 96 px on most mobile screens, but the actual stored image is larger to support high-DPI screens.

• Recommended upload size: 320 × 320 px minimum. Upload at 1000 × 1000 px if your profile picture contains text or fine detail, such as a logo.
• Shape: circular crop. Keep the important elements of your image within the central 80% of the frame to avoid the circular mask cutting off edges.
• File format: JPEG or PNG. Use PNG for logos and graphics with flat colors; JPEG for photographs.

Because the Threads profile picture is always your Instagram profile picture, any change you make in one app immediately reflects in the other. Plan your profile picture with both platforms' aesthetics in mind.

Threads Video Thumbnail and Cover Image

When you post a video to Threads, the platform generates an automatic thumbnail from the first frame. You cannot currently set a custom video cover image within Threads itself (unlike YouTube or Instagram Reels). This makes the opening frame of your video critically important — it is your thumbnail.

• Recommended video resolution: 1080 × 1920 px (9:16 vertical) for full-screen videos. For square videos, use 1080 × 1080 px.
• First-frame composition: Design the first frame as if it were a static thumbnail. Include the topic or hook visually — text overlay, a clear subject, or a compelling image. Threads users decide in under one second whether to tap to play.
• Avoid pure black or white first frames: Solid color first frames look like loading errors. Start your video with a contextually rich frame.

Aspect Ratio Rules and What Happens When You Exceed Them

Threads enforces its aspect ratio limits silently — there is no error message. If your image falls outside the supported range, Threads automatically crops it to the nearest allowed ratio without telling you. Here is what happens in practice:

• Too tall (taller than 4:5): The image is cropped to 4:5 from the center. A 1080 × 1920 px full-screen Story-style image uploaded to a Threads post will have 570 px sliced from each side (top and bottom). If you have text near the top or bottom of your canvas, it will disappear.
• Too wide (wider than 1.91:1): The image is cropped to 1.91:1. A 16:9 (1920 × 1080 px) image is very close to 1.91:1 (the difference is about 5 px), so it usually survives intact — but always verify.
• Multiple images in one post: Threads supports up to 10 images per post. All images in a multi-image post are displayed at the same aspect ratio, determined by the first image. Plan your multi-image posts so every image looks good at the same crop.

File Format and Size Limits

Threads inherits its file handling from Instagram's backend, so the supported formats and size limits are essentially identical.

• Supported formats: JPEG, PNG, WebP, HEIC (on iOS). HEIC files are automatically converted to JPEG on upload.
• Maximum file size: 8 MB for images.
• Color profile: Always export in sRGB. Images in Adobe RGB or Display P3 will have their colors processed by Threads' color management layer, which often results in slightly washed-out or over-saturated output depending on the device viewing the image.
• JPEG quality: Export at 90–100% quality for photographs. Threads applies its own compression on top of your upload, so starting with maximum quality gives you the best final output after the platform's recompression.

Cross-Posting from Instagram to Threads

Many creators post the same content to both Instagram and Threads. Because the supported dimensions overlap almost exactly, this is easy to do cleanly. The shared safe formats are:

• Square (1:1): 1080 × 1080 px — safe on both platforms with no cropping.
• Portrait (4:5): 1080 × 1350 px — safe on both platforms and gives maximum vertical feed presence on both.
• Landscape (1.91:1): 1080 × 566 px — safe on both platforms.

The one format to avoid for cross-posting is Instagram Stories (9:16, 1080 × 1920 px). If you upload a 9:16 image to a Threads post, it will be cropped to 4:5 — losing the top and bottom 285 px. Repurpose Stories content by cropping to 4:5 before posting to Threads.

Practical Checklist for Threads Images

• Upload width: 1080 px (no wider, no narrower)
• Safe aspect ratios: 1:1, 4:5, or 1.91:1
• Profile picture: 320 × 320 px minimum, 1000 × 1000 px recommended for logos
• Color profile: sRGB
• JPEG quality: 90–100%
• File size: under 8 MB
• Multi-image posts: all images should share the same aspect ratio
• Video first frame: design it as a thumbnail