Compress PDF Online Free

Compress and reduce PDF file size online without losing quality. 100% free and private in your browser.

Drop PDF file(s) here

or click to browse — choose single or multiple PDF documents

Select PDF Files

How to Use

Upload PDF File(s)

Drag and drop one or multiple PDF documents into the upload box or click to browse files.

Choose Compression Level

Select Recommended (best for most files), Extreme (smallest size for portal limits), or Low (maximum print quality).

Click Compress PDF

The tool immediately compresses pages and optimizes image streams in seconds right in your browser.

Download Compressed PDF

Download your compressed PDF file or all files packaged in a ZIP archive with zero watermarks.

Why Choose Our PDF Compressor?

Up to 85% Size Reduction

Smart image re-encoding and stream optimization shrink heavy documents without making text blurry.

100% In-Browser Privacy

All compression runs client-side inside your browser. Confidential IDs and bills are never uploaded to any server.

Bulk Multi-PDF Compression

Compress multiple PDF documents at once and download them individually or bundled in a single ZIP file.

3 Compression Levels

Choose from Recommended, Extreme, or Low compression to balance quality and file size according to your needs.

Zero Watermarks Added

Your final documents stay completely clean and professional with zero watermark stamps or branding.

Works on Any Device

Compress PDF files seamlessly on Windows, Mac, Android, and iPhone without installing heavy desktop software.

About PDF Compression

What is the PDF Compressor?

The PDF Compressor is a free online tool that reduces the file size of your PDF documents while keeping text, images, and tables sharp and readable. When you scan documents, export presentations, or create invoices from Canva or Microsoft Word, the resulting PDF files are often 5 MB to 20 MB or more.

This tool automatically compresses large embedded images, removes duplicate font data, and cleans up document streams to make your PDF up to 80% smaller.

Why Do You Need to Compress PDF Files?

Large PDF files cause problems when uploading online or sending attachments. Compressing them solves everyday hurdles:

Meet Government & Exam Portal Limits: Online job portals, university admissions, visa applications, and government forms often have strict upload limits (such as under 100 KB, 200 KB, or 500 KB). Our Extreme Compression mode shrinks files down to pass portal limits instantly.
Easy Email Attachments: Most email providers like Gmail, Yahoo, and Outlook limit file attachments to 25 MB. Compressed PDFs send in seconds without clogging inboxes.
Fast WhatsApp & Mobile Sharing: Smaller PDFs download instantly on smartphones even on slower mobile network connections.
Save Device Storage: Archive hundreds of scanned contracts, tax returns, and book chapters without filling your phone or laptop disk.

3 Smart Compression Levels to Choose From

You have full control over the balance between file size and visual clarity:

Recommended (Default)

The ideal balance. Cuts file size by 60%–75% while keeping text and photos crystal clear for resumes, bills, and office reports.

Extreme Compression

Maximum shrinkage (up to 85% smaller). Best when you must squeeze documents under strict 200 KB or 500 KB upload limits.

Low Compression

Mild compression (30%–45% smaller) that preserves highest resolution. Perfect for high-res photo portfolios and printing.

100% Client-Side Privacy (No Files Uploaded to Any Server)

Your confidential bank statements, tax documents, ID proofs, and company reports never leave your computer or phone. All PDF compression runs locally inside your web browser. Nothing is ever sent to or saved on any remote cloud server.

Compression Levels Comparison

Setting	Size Reduction	Visual Quality	Best For
Recommended	60% – 75%	Very High (Crisp text & images)	Email, everyday sharing, resumes
Extreme	75% – 85%+	Medium (Readable, smaller DPI)	Government portals, strict upload caps
Low	30% – 45%	Maximum (Near original fidelity)	Printing, architectural plans, art portfolios

How to Compress PDF in 4 Simple Steps

Upload PDF: Drag and drop your PDF file or click browse to choose one or multiple PDFs.
Choose Compression Level: Select Recommended for standard use, or Extreme if you have a strict file size limit.
Click Compress PDF: The tool compresses pages and optimizes streams in seconds right in your browser.
Download: Click Download Compressed PDF to save your optimized file with zero watermarks.

More Free PDF Tools:

Merge PDF Files →Image to PDF Converter →Compress Images (JPG, PNG, WebP) →

Frequently Asked Questions

Yes, it is 100% free with no hidden subscriptions, no daily limits, and no watermark stamps on your compressed PDF files.

No. All compression is performed locally inside your web browser using client-side JavaScript. Your confidential documents, bank statements, and invoices never leave your computer or phone.

Recommended Compression is ideal for most everyday PDFs, resumes, and email attachments (reducing size by 60%–75%). Choose Extreme Compression if you need to pass strict government or job portal upload limits like 200 KB or 500 KB.

Yes. Our compression algorithm optimizes embedded images and document streams while preserving sharp text and barcode readability.

Yes! You can upload multiple PDF documents together. You can compress them all in one click and download them as a ZIP archive or as separate files.

Because processing happens directly on your device, there are no strict server file size quotas. You can easily compress files up to 50 MB to 100 MB depending on your device's memory.