Question 1

Can I compress multiple PDFs to under 150KB at the same time?

Accepted Answer

Absolutely! Batch processing is fully supported. You can drop multiple files and they will compress to 150KB or less in parallel directly in your browser.

Question 2

How does the quality slider compare to setting an exact 150KB target?

Accepted Answer

The target size mode works backward to find the exact configuration that hits 150KB, while the quality slider lets you control the quality factor directly. Both show a live size comparison.

Question 3

Is 150KB enough for a clear scanned document?

Accepted Answer

Yes, 150KB is usually more than enough to keep scanned text, stamp seals, signature markings, and layout lines sharp and highly readable.

Question 4

Is this PDF compressor free and does it require signup?

Accepted Answer

Yes, completely free, no signup, no daily limit, and no watermarks added to your files.

Question 5

Is my PDF uploaded to a server?

Accepted Answer

No - everything happens locally in your browser via client-side processing, so your personal files are never uploaded or shared.