Image Alt-Text Audit

Walk a PDF's image XObjects and report which images have alt-text (/Alt) and which do not — the no-1 accessibility miss in most PDFs.

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How does the Image Alt-Text Audit work?

Audit every image inside a PDF for the presence of alt-text (the /Alt entry on the image XObject). Missing alt-text is the most common accessibility gap in PDFs and the one that bothers screen-reader users most. The tool walks each page's resource dictionary, finds every image XObject, and reports whether each has alt-text set and what the alt-text says. It does not modify the PDF — fixing /Alt requires the source authoring tool (Word, LibreOffice, InDesign) at this version.

🔒 Security & Privacy

All processing happens on your device. Your files never leave your browser, never touch our servers, and are not stored anywhere. Close the tab and the file is gone.

📱 Use it on any device

Works in any modern browser — Mac, Windows, Linux, iPhone, Android, and tablets. No installation, no app to download. Just open the page and start.

⚡ Quick & easy

Drag, drop, click. Most files process in seconds, not minutes. No watermarks added to your output, no per-day limits, and the tool always shows the result before asking you to download.

🎁 Always free, no signup

Free to use, every time. No account creation, no email required, no “trial” that converts to a paid plan. We make money from ads so you don’t have to pay.

Frequently asked

No — it audits only. pdf-lib does not expose a clean API for setting /Alt on image XObjects after the fact. Fix at source-document time and re-export the PDF.

For heavier PDF workflows

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