UnpassHow to Compress a PDF to Reduce Size for Upload
Open the Compress PDF tool →Scanned documents and PDFs full of images can be several MB in size, which is too big for many email attachments and upload forms. Compressing the PDF makes it smaller so it goes through.
How to compress a PDF
- Open the Compress PDF tool — Choose Low, Recommended or High compression.
- Upload your PDF — Select the file from your device.
- Pick a level — "Recommended" gives a good balance of size and quality.
- Download — Get the smaller PDF, ready to email or upload.
Why is my PDF so large?
PDFs made by scanning or by combining photos store each page as a high-resolution image, which is heavy. Compression re-saves those images at a smaller size, cutting the file by 50–80% while keeping it readable.
Is it private?
Yes — Unpass compresses the PDF on your own device. Your document is never uploaded, which is important for anything containing personal information.
FAQ
How much smaller will my PDF get?
Image-heavy PDFs often shrink 50–80%. Text-only PDFs are already small, so the tool keeps the original.
Will the text still be readable?
Yes, the Recommended level keeps documents clear.
Is there a file limit?
No fixed limit — it depends on your device's memory.