Can You Add Alt Text to an Instagram Post?
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Yes. You can add or change alt text for an Instagram photo before or after sharing it. Alt text is a written description of a photo that Instagram says is read when someone uses a screen reader. It is not the same as the visible caption.
For a published photo, open the post's options, choose Edit, then Accessibility. Write or update the description and save.
What does Instagram alt text do?
Alt text describes a photo for people who use a screen reader. Instagram says its automatic alt text uses object recognition to provide a visual description, and that you can replace it with a better description. The text is read through assistive technology, rather than displayed as the post caption.
Describe what is actually visible and relevant. Avoid using this field for hashtags, promotional copy, or a second caption.
How do you add alt text before sharing?
Add it from Accessibility on the post creation screen. Instagram's Help Center lists these steps:
- Start uploading the photo to Instagram.
- Choose a filter or make any edits, then continue to the next screen.
- Open Accessibility.
- Enter the photo description in the alt text box.
- Share the post.
Labels and screen positions can differ between app and web versions. Look for Accessibility on the final posting screen if the menu differs.
How do you edit alt text after posting?
Use the published photo's Edit menu. The Help Center's steps are:
- Open the photo you shared.
- Open Options above the photo.
- Choose Edit.
- Open Accessibility and write or revise the alt text.
- Choose Done to save.
This edits the description on the existing photo. You do not need to delete and repost just to correct alt text.
What should you write?
Keep the description accurate, concise, and focused on the image. Include the main subject and useful context, not every small detail.
| Image content | Useful description approach | Avoid |
|---|---|---|
| A person demonstrating a product | Name the person or role if known, the action, and visible product | Adding claims that are not visible |
| A chart or graphic | State the chart topic and the key visible takeaway | Repeating every decorative element |
| A landscape photo | Describe the main scene and distinguishing features | Keyword stuffing or unrelated hashtags |
Do not guess at unseen details. If a person, place, or object is unclear, describe only what the image supports.
How is alt text different from a caption?
A caption is visible post text; alt text is an accessibility description. Captions can include the message, context, and call to action for all viewers. Alt text should focus on what the photo shows for people accessing the image with a screen reader.
| Field | Primary purpose | Who normally sees or hears it |
|---|---|---|
| Caption | Context, message, conversation | People viewing the post |
| Alt text | Description of the photo | People using a screen reader |
Frequently asked questions
Can you add alt text to an Instagram post after sharing?
Yes. Open the photo's Options, choose Edit, then Accessibility and save the description.
Does Instagram add alt text automatically?
Instagram says automatic alt text uses object recognition to provide a visual description. You can replace it with your own description.
Can you edit alt text without reposting?
Yes. Edit the accessibility description on the existing photo from its Options menu.
Is alt text the same as a caption?
No. A caption is visible post text. Alt text describes the photo for screen reader access.
Will alt text show visibly below the photo?
It is read when someone uses a screen reader. It is not the same visible text field as the caption.
Should you put hashtags in alt text?
No. Keep alt text focused on an accurate description of the image.
Bottom line
You can add or edit alt text for an Instagram photo before or after sharing. Describe the visible image accurately, and use the caption field for your public message.
For more Instagram account guidance, read our Instagram privacy guide for creators and review the Instagram account services page.
Source: Instagram Help Center: edit the alternative text for a post.
