Get past file-size problems
Reduce an oversized PDF when its file size prevents you from completing an upload or document workflow.
PDF too large?
Compress your PDF and make it easier to use
Reduce PDF file size for uploads, sharing and everyday document workflows. Start with up to 3 free compressions per day — no signup required.
Private server-side processing. Files are not stored permanently.
Drop your PDF file hereor choose a file from your device
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Simple · Private · Optimized · Precise
High-quality file conversion designed to keep your workflow simple.
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Why compress a PDF?
Make oversized PDFs easier to work with
Reduce unnecessary file size when a large PDF gets in the way of uploading, sharing or working with your document.
Make large documents easier to handle
Create a smaller version of reports, forms and other PDFs that have become unnecessarily heavy.
Reduce image-heavy PDFs
Shrink PDFs containing scans, photos or graphics that can make the document much larger than expected.
How it works
Compress a PDF in three steps
Upload your PDF, reduce its file size and check the smaller result before using it.
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1
Upload your PDF
Drop the PDF you want to make smaller into the converter above.
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2
Compress the file
FilexFlow processes the PDF and creates a smaller version of the document.
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3
Download and check the result
Download the compressed PDF and check its file size and readability before uploading, sharing or submitting it.
Common PDF size problems
When compressing a PDF can help
Make an oversized PDF easier to upload, submit or share — and switch to a specialized tool when you have a specific size requirement.
Upload limits
Your PDF is too large to upload
Reduce a large PDF before uploading it to a form, application or document portal. If the service gives you a specific KB or MB limit, use Exact Size instead.
Choose an exact sizeLarge scanned PDFs
Your scanned PDF is much larger than expected
Scans, photos and image-heavy pages can make a PDF surprisingly large. Learn why this happens and what to check before compressing it.
Why scanned PDFs get so largePrivacy and security
Your files should remain under your control
FilexFlow uses server-side processing and is designed to avoid permanent file retention.
- Private server-side processing.
- No permanent storage of uploaded or converted files.
- Encrypted transport through HTTPS.
- Clear credit estimates before processing.
Frequently asked questions
Questions about compressing PDF files
What to know about file size, readability, upload limits and private processing.
How do I make a PDF file smaller?
Upload the PDF to the converter above and compress it to create a smaller version. Download the result and check its file size and readability before using it.
Can I compress a PDF to a specific KB or MB size?
If you need to meet a specific file-size limit, use FilexFlow Exact Size instead of general PDF compression. It is designed for workflows where a portal or service gives you a defined KB or MB maximum.
Will compressing a PDF affect readability?
Compression can change image quality depending on the PDF and how much its size needs to be reduced. Check the compressed file before submitting or sharing it, especially when the PDF contains scans, photos or small text.
Why is my scanned PDF so large?
Scanned PDFs can contain high-resolution page images, photos or graphics that make the file much larger than a text-based PDF.
Does FilexFlow permanently store my files?
FilexFlow is designed to avoid permanent storage of uploaded and converted files after processing.
Need more control?
Choose the right next step for your PDF
Use the converter above for general compression. If you have a specific upload limit or want to understand why your PDF is still large, continue with the option that matches your problem.