PDF Compressor: Reduce PDF Size Online
A large PDF can be too big to email or upload. Filenivo’s PDF compressor reduces file size so your document is easier to send, store and share.
Drag & drop your PDF file here
or
.pdf only · No size limit
Compression level
Balanced: ~108 DPI with good image quality. Recommended for most documents and sharing.
Pages are re-encoded as high-quality images to achieve real compression, so text becomes part of the picture (no longer selectable). Layout and appearance are preserved.
Compressing PDF…
Preparing…
Compression complete!
- File name
- Pages
- Compression level
- Original size
- Compressed size
Compression failed
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Frequently Asked Questions
How much smaller will my PDF be?
It depends on the content. Image-heavy and scanned PDFs usually shrink the most, while text-only PDFs are often already small.
Will the text still be readable?
Yes, text remains readable at normal compression levels. Very strong compression can blur images.
What size should a PDF be for email?
Many email services limit attachments to about 20-25 MB in total, so aim to stay well under that.
Can I compress a PDF and merge it too?
Yes. Merge your files first, then compress the combined PDF.
Why Use FileNivo?
- 100% Free to Use
- No Registration Required
- Files Never Leave Your Device
- Super Fast Conversion
- Works on Any Device
How to Compress a PDF
1. Upload your PDF.
2. Choose a compression level if options are available.
3. Start compression.
4. Download the smaller PDF and check that the text and images look right.
Why Are PDFs Large?
Most of a PDF’s size comes from images. Scanned documents are made entirely of page images, and PDFs
exported with high-resolution photos can reach tens of megabytes. Compression lowers image resolution and
removes unused data, which can cut file size significantly.
Tips for Smaller PDFs
- Scan at 150-200 DPI for normal documents; 300 DPI is only needed for fine detail or printing.
- Use black-and-white scanning for text pages.
- Remove unneeded pages before compressing.
- Keep the original file in case you need higher quality later