Ways to use the tools
- Use the keyboard Tab key to move through navigation links, file controls, buttons, and result messages.
- Use browser zoom if the page text or file controls feel too small. The layout is built to reflow on smaller screens.
- Use the visible file buttons to choose files from your device instead of relying only on drag and drop.
- Read the status message after a tool runs. It explains whether the file was created, whether something failed, or whether the result needs review.
File controls and status messages
The file tools include visible instructions near the upload area because choosing local files can behave differently across Windows, Mac, iPhone, Android, Chrome, Safari, Edge, and Firefox. If drag and drop is hard to use, select files with the button instead.
After processing, check the result in your PDF viewer, image viewer, or archive manager before sending it. Accessibility support can vary after a PDF is compressed or rebuilt, especially when a scanned page is converted into an image-backed page.
When another tool may be better
Use a full PDF editor, scanner app, or accessibility-focused document tool when you need tagged PDFs, OCR text, form-field editing, reading-order repair, digital signature handling, or official document remediation. CompressPDFs.app is a browser file-preparation utility, not a professional accessibility remediation product.
Report an accessibility problem
If a page, button, upload control, result message, or mobile layout is difficult to use, contact us with the page URL, device, browser, operating system, and the step where the problem happened. Specific details help us reproduce and fix the issue.