Compress PDF Files
Reduce file size heavily while keeping text crystal clear and fully selectable.
How to Compress PDF Online
- Everything runs in your browser — your files never leave your device.
- You can import PDFs directly from Google Drive or Dropbox.
- "Preserve text" keeps the PDF searchable and selectable.
- "Maximum compression" converts pages to images for much smaller file size.
- Recommended level offers the best balance when you want to reduce PDF size without losing too much quality.
- Already optimized PDFs may show little or no reduction.
Common Uses
Quick ideas to get the most out of Compress PDF
- Email attachments — Reduce file size to stay under email limits (usually 25 MB).
- Job applications — Meet strict file size requirements for resumes and HR portals.
- Upload to websites — Optimize documents for faster loading on blogs and portals.
- Save storage space — Free up space on your device, cloud, or server.
- Faster sharing — Send large documents quickly via WhatsApp or Slack.
- Mobile viewing — Reduce file size for easier downloading on phones.
- Client deliverables — Send lightweight, professional files to clients.
- Batch archiving — Compress multiple documents before long-term storage.
Your files never leave your device. All compression operations run 100% inside your browser.
Choose between preserving searchable text or maximum image-based size reduction.
Drastically reduce file size for scanned PDFs and image documents depending on the selected compression method.
Select Basic, Recommended, or Extreme compression presets to fit your exact visual needs.
Compress in seconds and see the new size before you download. No waiting queues.
No accounts, hidden subscriptions, or file limits. Compress your documents instantly for free.
Frequently Asked Questions (FAQ)
Everything you need to know about compressing PDF files
How do I compress a PDF?
Upload your PDF by dragging it, clicking the upload area, or importing it from Google Drive or Dropbox. Then choose between “Preserve text” or “Maximum compression”, select a quality level if needed, and click Compress PDF. Your smaller file will be ready to download in a few seconds.
How do I import a PDF from Google Drive?
Click the Google Drive button in the upload area. Sign in to your Google account and grant permission to view your files. Select the PDF you want and it will appear ready to compress.
How do I import a PDF from Dropbox?
Click the Dropbox button in the upload area. Sign in to your Dropbox account if needed and allow access. Choose the PDF file and it will be added so you can compress it immediately.
Do I need an account to use Google Drive or Dropbox?
You only need to sign in to your existing Google or Dropbox account when importing files. No extra account is required on our side, and you can still upload files from your device without logging in.
What are the different compression levels and how will my PDF look?
When you choose Maximum compression, you can select one of three quality levels:
- Basic Light compression. Images stay sharp. Good for moderate size reduction.
- Recommended Best balance between size and quality. Default for most documents.
- Extreme Smallest file size. Images may look slightly softer, but text stays readable.
After compression you see original size, new size, and percentage saved.
What is the difference between Preserve text and Maximum compression?
Preserve text keeps text selectable and searchable. Size reduction is usually moderate.
Maximum compression turns pages into compressed images for much smaller files, especially scanned PDFs. Text is usually no longer selectable.
How much smaller will my PDF become?
It depends on the content:
- Text-heavy PDFs: often 10–40% smaller with Preserve text
- Scanned or image-heavy PDFs: often 50–85% smaller with Maximum compression
- Already optimized PDFs: may shrink only a little
Will the visual quality of my PDF decrease?
With Preserve text, quality loss is minimal. With Maximum compression, quality depends on the level (Basic, Recommended, or Extreme).
Are my files safe? Do you upload them to any server?
No. Compression runs 100% in your browser. Your PDF never leaves your device — including files imported from Google Drive or Dropbox.
Can I compress multiple PDFs at once?
No. Currently you can only compress one PDF at a time. If you have several files, simply compress them one by one.
Does compression work with password-protected PDFs?
Not directly. You need to unlock the PDF first and then upload or import it. Once the password is removed, you can compress it normally.
How fast is the compression?
Most files compress in a few seconds. You see the new size right away, then download when ready. No queues or server wait times.
Is there a maximum file size limit?
We recommend keeping files under 50 MB for the best experience. Larger files can still work on desktop, but may be slower on mobile.
Does it work on mobile phones and tablets?
Yes. It works on modern mobile browsers (Chrome, Safari, Firefox and Edge) on Android and iOS. For very large PDFs, a computer is usually faster.
Why did my PDF barely reduce in size?
Some PDFs are already optimized. For a bigger reduction, try Maximum compression, especially on scanned or image-heavy files.
Ready to shrink your PDF file size?
Upload your document now and reduce its size in seconds without losing quality.
Start Compressing →🔥 Most Used
Merge PDF
Combine multiple files
Compress PDF
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Split PDF
Separate pages
PDF to JPG
Convert pages to images
JPG to PDF
Convert images to PDF
Organize PDF
Sort and rearrange
Protect PDF
Add a password
Rotate PDF
Turn pages easily
Watermark PDF
Add text or logo stamp
Add Signature to PDF
Sign documents digitally
Add Page Numbers to PDF
Stamp numbering
Unlock PDF
Remove security lock
Organize
Merge PDF
Combine multiple PDF files into one document
Split PDF
Separate a PDF into individual page files
Split PDF by Size
Divide large PDFs into parts with a strict MB target limit
Organize PDF
Sort, move and rearrange pages in your PDF
Reorder PDF Pages
Create a new PDF with pages in your chosen order
Delete PDF Pages
Remove unwanted pages from a PDF
Extract PDF Pages
Pick the exact pages you need from a larger file
Add Page Numbers to PDF
Stamp page numbers onto every page of a PDF
Reverse PDF Pages
Flip the page order from last to first
Remove Blank Pages from PDF
Detect and remove empty pages from a PDF
Duplicate PDF Pages
Copy selected pages and insert them in the PDF
Conversion
Editing
Compress PDF
Reduce PDF file size directly in your browser
Repair PDF
Recover data and fix corrupted or unreadable PDF files
Compare PDF
Visually compare two PDFs side-by-side with highlighted differences
Rotate PDF
Turn pages and download a corrected PDF
Add Signature to PDF
Draw, type or upload a signature and place it freely
Add Text to PDF
Insert custom text anywhere on the page
Crop PDF
Trim margins and crop pages to the size you need
Flatten PDF
Make form fields permanent and non-editable
Grayscale PDF
Convert a color PDF to black and white
