How to use it
- Choose a PDF up to 25 MB and 150 pages.
- Pick a quality level. Strong compression can soften photos and scanned text.
- Compare both sizes and download the smaller copy when available.
How it works
Marsa reduces the resolution and JPEG quality of eligible photos embedded in the PDF. It retains the existing page text and vector artwork rather than turning pages into images. Some scans use image encodings the tool leaves alone, and a PDF made mostly of text may already be compact.
When to use it
- Reduce a photo-heavy report before attaching it to an email.
- Try a smaller copy of a scanned document and check its legibility before submitting it to a portal.
- Use lighter compression when product photos or small labels need extra detail.
Check a PDF against a 500 KB limit
Enter 500 in the optional size goal and run Balanced compression. Read the result before downloading. If it is still over the limit, try Strong and check that small print and scanned stamps are legible. Remove blank or duplicate pages first when they are safe to discard.
What happens to your data
The PDF is processed in this tab. Marsa does not upload the original or its compressed copy. Your browser saves the file only when you download it.
Frequently asked questions
Can I compress a PDF to 500 KB or 1 MB?
Use the size goal to check the result against the limit. The field compares the output size after compression. Your selected quality level controls compression, and the result depends on the images in the PDF.
Will my text still be searchable?
Existing PDF text is preserved by this method. Text that exists only inside a scanned image remains part of the image.
Why is the original sometimes smaller?
The file may already use efficient compression or contain few eligible images. Marsa keeps the original when it cannot make a smaller copy.
Can I compress a signed or locked PDF?
Encrypted PDFs are rejected. Editing a signed PDF can invalidate the signature. Keep the signed original and use an unsigned copy if appropriate.