How to use this PDF tool
- Select one PDF and choose the available settings.
- Run the tool and review the on-screen counts.
- Download the generated json inventory for remediation or record keeping.
#194 · PDF Accessibility & Publishing Tool
PDF Image Alt Text Inventory
Inventory Figure tags and alternate descriptions in a tagged PDF. Missing descriptions are clearly separated from figures that include alt text.
PDF Tool
Local browser processingpages
Ad space
What this tool does
Inventory Figure tags and alternate descriptions in a tagged PDF. Missing descriptions are clearly separated from figures that include alt text.
This checker reads the tagged structure tree. Untagged images may not appear because PDF.js cannot reliably connect every painted image to accessibility metadata.
Files stay in this browser tab. Very large or damaged PDFs may exceed available memory or fail to parse.
Supported formats
Standard PDF files with the relevant stored structure are supported. Password-protected, malformed, dynamic XFA, and unusually large files may not be readable.
| Input | Output |
|---|---|
| One PDF | JSON inventory |
Tips for better results
- Work from an unlocked copy and keep the original.
- Use a tagged, searchable PDF when checking accessibility structure.
- Review automated results manually before publishing.
FAQ
Does pdf image alt text inventory upload my PDF?
No. Processing runs locally in your browser. The page loads its PDF libraries from a pinned CDN, but your selected document is not sent to a server.
Can this tool process an encrypted or password-protected PDF?
Not reliably. Remove the password in an authorized PDF application first, then analyze the unlocked copy.
Why can the result differ from what I see on the page?
PDF appearance and accessibility structure are separate. This tool reports stored bookmarks, tags, annotations, labels, or extracted text rather than inferring meaning from appearance.
Will pdf image alt text inventory preserve digital signatures?
The original file is never changed. The downloaded report is separate from the source PDF.
What should I do when the report finds no usable structure?
Check whether the PDF is tagged or has bookmarks, searchable text, annotations, or page labels as appropriate. Add that structure in an authoring or remediation tool and run the check again.
Related PDF tools
Output fields
| Field | Meaning |
|---|---|
| Pages | Calculated from the selected PDF during local processing. |
| Figures | Calculated from the selected PDF during local processing. |
| Missing alt text | Calculated from the selected PDF during local processing. |