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Compress PDF Online – Reduce PDF File Size Instantly | Free
✅ 100% Free  ·  No Signup  ·  No Watermark

Compress PDF Files
Reduce Size Instantly

Upload your PDF, choose your compression level, and download a smaller file in seconds. Runs entirely in your browser — your files never leave your device.

100%
Free Forever
3
Compression Levels
0
Files Sent to Server
⚡
Instant Download

🗜️ PDF Compressor — Start Here

Upload your PDF below, pick a compression level, and hit Compress. Your smaller PDF is ready in seconds.

📂 Upload Your PDF
📄

Drag & Drop your PDF here

or click to browse files from your device

✅ PDF files only  ·  Any size

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↩ Change file
⚙️ Compression Level
✅ Compression Complete!
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📁 Original Size
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🗜️ Compressed Size
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💾 Space Saved
Why Use This Tool

Powerful Compression,
Zero Complexity

A clean, fast, and private PDF compressor that runs entirely in your browser — no uploads, no accounts, no risk.

🔒
100% Private
Your PDF never leaves your device. All compression happens locally in your browser using JavaScript — zero server upload.
⚡
Instant Results
No waiting for uploads or server processing. Compression runs at full speed directly on your device and finishes in seconds.
🎛️
3 Compression Levels
Choose Low for near-lossless quality, Medium for the sweet spot, or High to squeeze every byte when size is critical.
📊
Before & After Stats
See exactly how much space you saved — original size, compressed size, and percentage reduction shown clearly after compression.
📱
Works on Any Device
Fully responsive design works seamlessly on desktop, tablet, and mobile. Compress PDFs from anywhere, any time.
🚫
No Watermarks Ever
Your compressed PDF is clean and unmodified aside from reduced file size. No branding, no stamps, no hidden modifications.
✅
Free with No Limits
Compress as many PDFs as you want, as often as you want. No account required, no subscription, no daily limits.
🖱️
Drag & Drop Upload
Simply drag your PDF onto the page or click to browse. The interface is clean and designed to get you to your result fast.
📥
Instant Download
Your compressed PDF downloads immediately to your device with a single click. No email required, no link to wait for.
Simple Process

Compress Your PDF in 3 Steps

From upload to download in under a minute — no experience or software needed.

1
Upload Your PDF
Drag and drop your PDF file onto the tool, or click to browse and select it from your device.
2
Choose Compression Level
Select Low, Medium, or High compression depending on how much you need to reduce the file size.
3
Download Compressed PDF
Click Compress PDF and your smaller file downloads instantly. See exactly how much space you saved.
FAQ

Frequently Asked Questions

Everything you need to know about our free PDF compressor.

Is this PDF compressor really free?
Yes, completely free with no hidden fees, no subscriptions, and no limits on how many PDFs you compress. No account needed.
Is my PDF uploaded to a server?
No. All compression happens locally in your browser using JavaScript. Your PDF file never leaves your device, so your documents stay 100% private.
How much will the file size be reduced?
Results vary depending on PDF content. Image-heavy PDFs often see 30–70% reduction. Text-only PDFs tend to compress less as they are already efficient.
Will compression reduce quality?
Low compression retains near-original quality. Medium offers a balanced result. High compression prioritises size reduction and may affect image sharpness slightly.
What is the maximum file size supported?
There is no fixed server-side limit since processing is local. Very large PDFs (100MB+) may take longer depending on your device's processing speed.
Does it work on mobile and tablet?
Yes, the tool is fully responsive and works on all modern smartphones, tablets, and desktop computers without any app installation.
Compressing PDF…
Analysing document…