Image Describer
Create a factual description of visible image content.
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Sign in to continueWhat is Image Describer?
Image Describer writes a factual description of what is visible in a photo — subjects, setting, actions, notable details — separating what it can see from what it cannot be sure of. Use it to draft alt text, catalog photos, or describe images you cannot view directly; a person should review descriptions before publishing them.

Hundreds of images, zero alt text?
Draft factual descriptions in bulk and spend your time reviewing them instead of writing every one from a blank field.
How to use Image Describer
- 1
Choose the image to describe
Select a clear private image and include the full scene that matters.
- 2
Confirm the file boundary
Use PNG, JPEG, or WebP up to 20 MB.
- 3
Generate a factual draft
Run the bounded description task for visible subjects, setting, and actions.
- 4
Edit for page context
Verify details and keep only what the surrounding content needs.
Examples
Example image
A street scene with cyclists and storefronts.
A concise description separates visible details from uncertainty.
Use cases
Accessibility descriptions a person verifies and refines.
Searchable descriptions for large image libraries.
Understand image content before approving or publishing it.
Why use Image Describer?
Visible-detail focus
Descriptions separate observed subjects and actions from uncertain inferences.
Alt-text starting point
The concise result is structured for human accessibility review.
Private source access
The provider receives a short-lived signed address.
Limits
FAQ
Are the descriptions ready to publish as alt text?
Treat them as strong drafts. A person should confirm accuracy and adjust emphasis for the surrounding page before publishing.
Will it identify people in a photo?
It describes visible people without attempting face matching or claiming an identity from appearance.
Does it include every detail in the scene?
It favors the main visible content. Review the image if small objects or exact spatial relationships matter.
Is the source image public?
No. Access uses a short-lived signed address for the selected private media object.
Which file formats are accepted?
The controlled beta accepts PNG, JPEG, and WebP images up to 20 MB.
Related tools
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Create a factual description of visible image content.
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