Free PDF Tool · Archival

PDF/A Indicator Check

Run a heuristic PDF/A indicator check in your browser. Free, private, no signup — your selected files are processed in your browser and are not uploaded to our server.

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Drop your file here

or click to browse from your device

Accepts: .PDF
Note: This is a heuristic check that looks at metadata and basic structure. Real PDF/A validation needs to verify font embedding, color profiles, and structural rules — only desktop tools like veraPDF or Acrobat Preflight can certify compliance.

About this Check PDF/A indicators (not certification)

Check whether your PDF appears to follow PDF/A archival format with our validate pdf/a tool. We inspect basic structure and a few metadata/output-intent indicators such as producer, subject, /Metadata, and /OutputIntents.

This is a heuristic check — useful as a first-pass screening. Certified validation requires veraPDF or Acrobat Preflight.

Your privacy is the default. Your selected files are processed in your browser and are not uploaded to our server; all processing happens client-side using pdf-lib and browser-side byte checks. Closing the tab clears the working session from this page; downloaded files remain on your device.

This tool is free to use with no signup required. Large files may be limited by your browser’s memory and device performance. Part of PDF Tools Base, a privacy-first collection of 161 PDF utilities. Bookmark the page for next time, and explore related tools in the footer below.

How to use the Check PDF/A indicators (not certification) tool

  1. Drop your PDF.
  2. Click Process — heuristic checks run on metadata and structure.
  3. Download the validation report.

Why use PDF Tools Base?

100% Browser-Based

Check PDF/A indicators (not certification) processes selected files in your browser. Your selected files are processed in your browser and are not uploaded to our server.

No Server Upload, No Signup

Your selected files are processed locally in your browser. No account, no server upload, no email needed.

No Watermark Ever

Outputs are clean. We never stamp our brand or a paywall watermark on your files.

Free to Use

No accounts and no signup. Use the tool as much as you need within reasonable browser limits.

Works on Every Device

Windows, Mac, Linux, iPhone, iPad, Android, Chromebook. Any modern browser.

Built on Open Source

Powered by pdf-lib and browser-side PDF indicator checks.

Common uses for validate pdf/a

Pre-submission check

Spot likely problems before sending to an archive.

Self-audit

Check your archival pipeline output.

Frequently asked questions

Is Check PDF/A indicators (not certification) safe to use?

Yes. Everything happens in your browser. Your selected files are processed in your browser and are not uploaded to our server. Closing the tab clears the working session from this page; downloaded outputs remain on your device until you delete them.

Do I need to register or sign in?

No. No account, no email, no sign-up. Open the page and start using the tool immediately. Free to use, no signup needed.

Is there a watermark on the output?

No. PDF Tools Base never adds a watermark or branding to your output. Your final file is clean — just what you produced from the original.

Is there a file size limit?

Phones may struggle with PDFs over 50–100MB; desktops may handle larger PDFs but can still fail on very large or complex files. Large PDFs may be slow or fail depending on browser memory, page count, render mode, and PDF complexity.

Does this work on mobile devices?

Yes. The tool works on all modern mobile browsers: Chrome on Android, Safari on iOS, Firefox, Edge, Brave. The drag-and-drop also accepts files from your phone’s file manager.