Compress PDF Online
Reduce the size of your PDF files right in your browser, and see exactly how much you saved.
Drag & drop PDF files here
🔊 Compression level
✨ Options
✓ Compression complete!
How to Compress a PDF Online
Add your PDFs
Tap "Select PDF Files" or drop one or more documents into the box.
Pick a level
Choose Light, Balanced, Strong or Maximum depending on how small you need the file to be.
Compress and download
Check the before and after size, preview the result, then download each file or all of them as a ZIP.
Make Large PDFs Easier to Share
Many websites, job portals and email services limit how big an attachment can be. A scanned document or a PDF full of photos can easily be several megabytes. This tool shrinks those files so they upload faster and fit within the limit.
Everything runs inside your browser, so your documents are never sent to a server. Nothing is stored and no account is needed.
How the Levels Work
Light
Re-saves the file with a leaner internal structure. Text stays selectable and searchable, but the savings are usually small.
Balanced
Redraws each page as a compressed image at a sharp, readable resolution. Best choice for most documents.
Strong
Uses a lower resolution and stronger compression for noticeably smaller files, with slightly softer images.
Maximum
The smallest result. Good for quick sharing where visual quality is less important.
Note: Balanced, Strong and Maximum turn pages into images, so text in the compressed file can no longer be selected or searched. If the result is not smaller than your original, the tool keeps your original file instead.
Why People Use This Tool
Private by design
Files are processed locally. Bank statements, ID copies and contracts stay on your device.
See your savings
Every file shows its size before and after, with the percentage saved.
Built-in preview
Look through the compressed pages before you download them.
Batch and ZIP
Compress up to 10 files at once and download them together as a ZIP.
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Frequently Asked Questions
Are my files uploaded to a server?
No. Compression happens entirely in your browser, so your files never leave your device.
Which level should I choose?
Start with Balanced. If the file is still too large, try Strong or Maximum. Choose Light only when you need to keep the text selectable.
Why did my file not get smaller?
Some PDFs are already well optimized, especially text-only files. When the result is not smaller, the tool keeps your original so you never end up with a bigger file.
Can I compress password-protected PDFs?
No. Unlock the file first, then add it to the list.
Will links and forms still work?
With Balanced, Strong and Maximum, pages become images, so links, form fields and bookmarks are lost. Light keeps most of them.