The impact on quality depends on the compression level you choose. Light compression maintains excellent quality with minimal visual difference. Medium compression offers a good balance that's suitable for most uses. Maximum compression may reduce image quality noticeably, but text remains sharp and readable. For printing purposes, we recommend Light compression. For email sharing or web use, Medium is usually the best choice.

The compression ratio depends on the content of your PDF. Image-heavy documents can often be reduced by 70-90% with maximum compression. Text-heavy documents with few images may only reduce by 10-30% since text is already quite compact. Scanned documents typically see the most dramatic improvements. After compression, you'll see exactly how much space was saved.

No, text in your PDF will remain fully readable and searchable at all compression levels. Our compression primarily targets images, which are the main contributors to file size. Text data, hyperlinks, bookmarks, and other PDF features are preserved. Even with maximum compression, your text will be perfectly clear.

Yes, we currently support PDF files up to 50MB in size. This limit ensures fast processing and a good user experience. If you have a larger file, you might consider splitting it into smaller parts first, or contact us for enterprise solutions that can handle larger files.

PDF compression is a one-way process - once compressed, the original quality cannot be fully restored from the compressed file. That's why we always recommend keeping a backup of your original file before compressing. If you're not satisfied with the result, try again with a lighter compression setting. You can compress the same original file multiple times with different settings to find the right balance.

Some PDFs don't compress well because they're already optimized, or they contain mainly text (which is already compact). If your PDF is a scan or contains photos that have already been compressed (like JPEG images), there's less room for additional compression. Try Maximum compression for the smallest possible size, though this may affect image quality.

If you plan to print the PDF, we recommend using Light compression to preserve the highest quality. Medium compression is usually acceptable for standard office printing. Maximum compression may result in visible quality loss in printed images, though text will still print clearly. For professional printing or large format prints, always use the original uncompressed file or Light compression.

Currently, our free tool processes one PDF at a time. For batch compression of multiple files, you can process them one after another, or consider our Pro plan which offers batch processing capabilities. Each file is processed independently to ensure optimal compression for its specific content.

Compression time depends on the file size and complexity. Most PDFs under 10MB are processed within 10-30 seconds. Larger files with many pages or high-resolution images may take 1-2 minutes. You'll see a progress indicator while your file is being processed. Our servers are optimized for fast processing.

Yes, we take security seriously. Your files are transferred using encrypted HTTPS connections. Processing happens on secure servers with no human access to your documents. All files are automatically deleted within 24 hours after processing. We never store, share, or analyze the content of your PDFs. For sensitive documents, you can be confident that your data remains private.