Private PDF tool

Check PDF Accessibility Locally

Run a PDF accessibility-oriented check to identify issues that may affect readers using assistive technology. It helps you review documents before publishing or sharing them widely.

How to use WCAG Check

1. Upload the PDF you want to inspect.

2. Run the accessibility check in the browser.

3. Review the findings and decide what needs fixing.

Accessibility review can involve unpublished or internal files. A local-first check lets you inspect documents without uploading draft content to a third-party scanner.

Common uses include checking public documents before upload, reviewing forms and reports, and finding accessibility problems in shared pdfs. Keep the source file until you have opened the downloaded result and checked every important page.

What happens to your file

The supported document work happens in the browser. Your device reads the file and prepares the output, so PDFOmni does not need to send the source to a document-processing server. Normal website resources, analytics, ads, and optional online features can still make internet requests, as explained in the Privacy Policy.

Local processing means that speed depends on the device. A short text PDF can finish quickly, while a large scan with high-resolution images may use much more memory. The 500 MB per-file limit is an upper boundary, and complicated files can still take longer on an older phone or laptop.

You do not need to create an account before starting. Choose the source file, make the change, and download a new copy. Keep the original until you have opened the export and checked that every important page still looks and works the way you expect.

• Read the Privacy Policy

Before you start

Automated checks and batch actions are most useful for repeated mechanical work. They do not replace human decisions about privacy, accessibility, layout, or whether a document is ready to publish. Use the output as a starting point for review.

Test a workflow on copies of a few representative files before running a large group. PDFs that look similar can contain different fonts, forms, scans, or permissions. A small test makes it easier to notice a setting that does not fit every document.

Keep a record of the settings that worked and inspect the downloaded files. For accessibility, combine automated findings with keyboard and screen-reader testing. For batch work, compare file counts and open samples from the beginning, middle, and end of the output set.

Define a review rule before running an automated process. The rule might include matching input and output counts, checking every failed file, and opening a sample from each different document type. Keep unusual scans, protected files, forms, and very large documents in a separate group when they need different settings. Use output names that preserve a connection to the source without overwriting it, and save a short note about the options used. If the batch is being handed to another person, explain what the automation changed and what still needs human review. A repeatable process should make mistakes easier to find, not merely create files faster. When one sample fails, stop and understand the cause before assuming the rest of the group is safe.

Tips for a reliable export

After reviewing issues, you can use PDFOmni tools to edit, add text, organize pages, compress the file, or prepare a corrected version for distribution.

Save the result with a name that separates it from the source. Reopen the downloaded file, compare the page count, and inspect the parts that changed. If the PDF is being submitted for school, work, taxes, or an official form, compare it with the receiving instructions before uploading it.

PDFs can store text, images, forms, annotations, fonts, and security settings in very different ways. A preview is helpful, but it cannot replace a final check of the downloaded file. Use another PDF reader for an important document when you want an extra compatibility check.

Check the page count and move through the full document. Pay extra attention to small text, page boundaries, forms, links, signatures, unusual fonts, and pages made from scans. A successful download only confirms that a file was created. It does not confirm that the result meets the rules of the person or service receiving it.

Keep the original and final copies until the work is accepted. If a setting did not produce the right result, return to the source rather than repeatedly processing an already compressed or converted output. Clear filenames make it easier to tell which version was reviewed and which version was actually submitted.

Useful next steps

Continue only when the document needs another change. Each link opens a focused PDFOmni tool or guide.

• Edit the document
• Inspect extracted text
• Read the accessibility guide

Choose the right source and keep versions clear

Start from the clearest and most complete copy you have. Repeatedly converting or compressing an already processed PDF can lower image quality and make text harder to edit or extract. If the original came from Word, Excel, or another authoring program, keep that source because it is usually the easiest place to make large content changes. A clean source also gives you a reliable page to compare with the result.

Use names that explain the document status, such as report-original.pdf, report-review.pdf, and report-submitted.pdf. Avoid overwriting the only copy or filling a folder with names like final2 and final-new. A clear name makes it easier to reopen the exact output you checked and prevents an older version from being sent by mistake.

Check the delivery requirements

Look at the instructions from the person, class, company, or portal receiving the file. They may require a particular filename, page size, file-size limit, signature method, color setting, or accessibility standard. Finish the document first, then compare the downloaded copy with that list. Open it in the program the recipient is likely to use when possible. If the file will be printed, check margins and small text on paper or in print preview. If it will be uploaded, confirm that the portal accepts the format before deleting any working copies. A technically successful export can still be the wrong submission when one of these practical requirements is missed.

Frequently Asked Questions

Is it safe to use this PDF tool online?

Yes. The core PDF workflow runs locally in your browser, so your PDF is processed on your device and is not uploaded by PDFOmni for server-side handling.

Does this guarantee WCAG compliance?

No automated check can guarantee full compliance. Use the results as a practical review aid alongside manual inspection.

Can it fix accessibility issues automatically?

The checker identifies issues; depending on the result, you may need to edit the document or source file.