Threads lets you share up to ten images in a single post. Many users think they can only add one photo at a time. This guide shows the exact steps to select and arrange multiple images before posting.
The feature works the same on Android and iOS. You do not need a special setting or update. The image picker in the compose screen supports multi-select by default.
You will learn how to attach images, reorder them, and avoid common mistakes like accidental single-image uploads.
Key Takeaways: Attaching Multiple Images in Threads
- Compose button (camera icon): Opens the device photo gallery where you can select up to ten images at once.
- Tap and hold on an image: Lets you drag and reorder selected images before posting.
- Alt text button on each image: Add descriptive text for accessibility; required for each image separately.
How Threads Handles Multiple Images in a Post
Threads stores each post as a single item in your profile timeline. When you attach multiple images, the app creates a swipeable gallery inside that post. Viewers can swipe left or right to see all images. The post shows a small dot indicator below the gallery to show the total number of images.
Each image can have its own caption text, but you write only one main caption for the entire post. The caption appears below the gallery. Threads does not support separate captions per image.
Images are uploaded at their original resolution but may be compressed to meet Threads file size limits. The maximum file size per image is 30 MB. Supported formats include JPEG, PNG, GIF, and WebP. Live photos and burst photos are not supported.
Steps to Attach Multiple Images to a Threads Post
Follow these steps on the Threads mobile app. The process is identical on Android and iOS.
- Open the compose screen
Tap the plus icon or the pen icon at the bottom of the home screen. This opens the new post editor. - Tap the camera icon
In the bottom-left corner of the compose area, tap the camera icon. This opens your device photo gallery. - Select multiple images
Tap each image you want to attach. A blue checkmark appears on selected images. The top of the screen shows a counter, for example 3/10. You can select up to ten images total. - Tap Done or Add
After selecting all images, tap the Done button in the top-right corner (iOS) or the Add button (Android). The images appear in the compose area as a gallery. - Reorder images (optional)
Tap and hold an image in the gallery. Drag it left or right to change its position. The first image becomes the cover image that appears in your profile feed. - Add alt text to each image
Tap the Alt button that appears on each image thumbnail. Type a short description of the image. Repeat for every image. Alt text helps screen readers and improves accessibility. - Write your caption
Tap the text field above the keyboard. Type your post caption. The caption appears below the gallery when the post is published. - Tap Post
Tap the blue Post button in the top-right corner. Threads uploads all images and publishes the post.
Removing an Image Before Posting
If you accidentally selected an image you do not want, tap the X button in the top-left corner of that image thumbnail. The image is removed from the gallery without affecting the other selected images.
Common Mistakes and Limitations When Attaching Multiple Images
Threads Only Allows Ten Images Per Post
The app enforces a hard limit of ten images. If you try to select an eleventh image, the app shows a message that the maximum is ten. To share more than ten images, create a second post and link to it in the first post caption.
Images Do Not Upload After Tapping Post
If the post gets stuck or shows an error, check your internet connection. Threads needs a stable Wi-Fi or cellular connection to upload multiple images. Large images over 30 MB fail to upload. Compress the image using a photo editor before attaching it.
Alt Text Does Not Save for All Images
You must add alt text to each image individually. If you skip alt text on one image, that image has no description. The app does not warn you about missing alt text. After posting, you cannot edit alt text. Delete the post and repost with the correct alt text.
Image Gallery Shows Only One Image in Profile Feed
This is normal. The profile feed shows only the first image of a multi-image post. The other images are visible only when someone taps the post to open it. The dot indicator below the image shows that more images exist.
Threads Multi-Image Post vs Single Image Post: Key Differences
| Feature | Single Image Post | Multi-Image Post |
|---|---|---|
| Maximum images | 1 | 10 |
| Gallery swipe | Not available | Viewers swipe left or right |
| Cover image | The only image | First image in the selection order |
| Alt text | One field per post | One field per image (required for each) |
| Caption placement | Below the image | Below the gallery |
| Editing after posting | Can edit caption only | Cannot edit images or alt text |
Multi-image posts take up more vertical space in the feed but offer a richer visual story. Single image posts are simpler and load faster on slow connections.
You can now attach up to ten images to a single Threads post using the camera icon in the compose screen. Remember to tap Done after selecting images and add alt text to each one for accessibility. For a more polished gallery, reorder images so the most important one appears first in the profile feed. If you need to share more than ten images, split them across two posts and link the second post in the first caption.