Upload hook visual
Upload a simple, bold image that acts as a hook into your text body — infographic, short headline, or single strong visual.
Threads Post Image Resize
Threads is Meta’s text-first social network launched in 2023, built directly on Instagram’s account system and social graph — content posted to Threads reaches your Instagram friends and followers easily. Image posts use the same 1080×1080px (1:1) spec as Instagram square posts, so one image drops into both platforms. The platform itself is text-tweet-style, so images play a support role; algorithmic distribution depends more on the length and context of your text than on the image itself. As a result, Threads images work best as hooks that pull readers into the text — infographics, short headlines, or single bold visuals. Carousels (up to 10 slides) also recommend 1080×1080, and holding the same ratio across every slide keeps the flow intact. This tool exports a precise 1080×1080px JPG tuned for cross-posting to Instagram and Threads at once.
How to use
Center for Instagram compat
Center the visual weight, the same way you would for Instagram’s square grid (the same cut may also ship to Instagram).
Hold 1:1 across carousel
Export 1080×1080px JPG. For carousels, hold every slide at 1:1 to keep the flow intact.
When to use this tool
Because Threads sits inside Meta and reaches your Instagram graph immediately, treating it as a mirror channel for your Instagram square posts — rather than a separate channel — is the fastest way to lower content-ops cost.
Cross-posting the same Instagram square cut to Threads to lower content-ops cost
Producing infographics or bold visual hooks that pull readers into the body text in a square frame
Building a 10-slide carousel where every image must hold the same 1:1 ratio for a continuous flow
Threads Post Image Spec Guide
Recommended sizes as of 2025. Threads shares the same image specifications as Instagram.
| 1080 × 1080px |
| Aspect ratio 1:1 (square) |
| File format: JPG, PNG |
| Portrait (4:5) images are supported but may be cropped in the feed. |
| This is the same size as Instagram square posts, so you can reuse the same file. |
| Square is displayed as-is in the feed. |
| Aligns in 1:1 grid on the profile page. |
| Uses the same 1080×1080px spec as Instagram. |
| Maximum file size: 30MB |
| Supported formats: JPG, PNG |
| Up to 10 images in a carousel post |
FAQ
Are Threads and Instagram post image sizes the same?
Yes, both default to 1080×1080px square. You can upload the same file to both platforms, saving content production time.
Can I upload non-square images to Threads?
Yes — portrait (4:5) and landscape (1.91:1) images are supported, but they may be auto-cropped in the feed preview. Square is the safest choice.
What is the maximum file size for Threads post images?
You can upload up to 30MB, but keeping images between 1–3MB ensures fast loading. JPG format helps manage file size effectively.
Should I use the same size for carousel posts?
Yes, 1080×1080px is recommended for carousels too. You can attach up to 10 images, and keeping them all square creates a consistent, polished look.
Why does my image look low-resolution on Threads?
Images smaller than 1080px get upscaled and appear blurry. Start with a source image at least 1080×1080px and use this tool to crop to the exact size for a sharp result.