Compress PDF Online Free
Reduce your PDF file size without losing quality. Choose your compression level and download a smaller PDF in seconds — no account required.
Drop your PDF here to compress
or click to browse from your computer
PDF only · Max 50 MB free · Up to 500 MB with Pro
document.pdf
Calculating size…
Compression Level
Minimal compression, maximum quality. Best for print-ready PDFs where visual fidelity matters most.
Balanced compression with great quality. Perfect for sharing via email or uploading to cloud storage.
Maximum compression, smallest file. Ideal for web publishing or storage where file size is critical.
No account required · Files processed securely and deleted in 24h
Compressing your PDF…
Uploading file
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PDF Compressed!
Your smaller PDF is ready to download.
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Original size
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Compressed size
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Size reduction
Unlock Pro — files up to 500 MB, batch compression, no queue
Custom DPI settings · Image quality control · Priority processing
How It Works
Compress any PDF in three simple steps
Upload Your PDF
Drag and drop or click to select a PDF file up to 50 MB. The tool automatically detects the file size and page count.
Choose Compression Level
Select Low, Medium, or High compression. A live estimate shows you the expected output size before you commit.
Download Smaller PDF
Click Compress PDF and download your smaller file in seconds. The result stats show exactly how much space you saved.
Why Use Our PDF Compressor?
Smart compression that keeps your content intact
3 Compression Levels
Choose Low, Medium, or High. Each level balances file size and quality differently so you get exactly the result you need.
Smart Image Compression
Intelligently re-encodes embedded images at optimal quality settings while leaving text, vectors, and fonts untouched.
Preserves Text & Fonts
Text, fonts, hyperlinks, annotations, and vector graphics remain fully sharp and searchable regardless of compression level.
Live Size Estimate
See the estimated compressed file size before you click Compress. No surprises — you'll know the savings upfront.
Batch Compression
Pro users can compress multiple PDFs at once and download all results in a single ZIP archive with a single click.
100% Private & Secure
Files are encrypted in transit via TLS, processed in isolated containers, and permanently deleted within 24 hours.
Compression Level Comparison
Frequently Asked Questions
Results depend on the content of your PDF. Image-heavy PDFs can be compressed by 50–70%. PDFs that are mostly text will compress by 10–25%. The tool shows an estimated output size before you commit.
Yes. Text, fonts, vectors, and hyperlinks are never degraded by compression. Only embedded images are re-encoded at a lower quality. Even on High compression, text remains fully sharp and selectable.
Free users can compress PDF files up to 50 MB. Pro users can compress files up to 500 MB with batch processing, custom DPI settings, and priority queue access.
Low — Use for print-ready documents where image quality must be pristine. Medium — Best for most uses: email, sharing, and cloud upload with a good size-quality balance. High — Use when file size is critical and slight image quality loss is acceptable, such as web publishing or storage.
Compressing password-protected PDFs is a Pro feature. You will be prompted to enter the document password before compression begins.
Yes. All files are encrypted in transit via TLS, processed in isolated server environments, and permanently deleted within 24 hours. We never read, share, or retain your document content.