How much can I compress a PDF file?

PDF compression typically reduces file size by 30-80% depending on the original file content. Text-heavy PDFs compress more than image-heavy ones. Our tool can achieve up to 80% size reduction while maintaining acceptable quality for most applications.

Will PDF compression affect the quality of my document?

Some quality impact is normal with compression, but our tool is optimized to minimize visual quality loss. Text remains sharp and readable, while images maintain good quality. The compression focuses on removing unnecessary data rather than reducing visual quality.

Can I compress password-protected PDFs?

Password-protected PDFs cannot be compressed with our tool. You'll need to remove the password protection first using a PDF password remover tool, then compress the unlocked PDF file.

What's the maximum PDF file size I can compress?

There's no strict file size limit, but very large PDFs (over 100MB) may take longer to process. The tool works best with PDFs under 50MB for optimal performance across all devices and browsers.

Can I compress multiple PDFs at once?

Currently, the tool compresses one PDF at a time for optimal quality control and processing efficiency. For multiple files, process them individually to ensure each compression meets your quality requirements.

Will compression affect PDF functionality?

Our compression maintains all PDF functionality including text searchability, hyperlinks, and bookmarks. The compression focuses on structure optimization and metadata removal rather than functional elements.

Are my PDF files uploaded to your servers?

No, all PDF compression happens locally in your browser. Your files never leave your device, ensuring complete privacy and security for sensitive documents.

Can I undo PDF compression if I'm not satisfied with the results?

The easiest way is to keep your original PDF as backup before compression. You can then re-compress with different settings or use the original if the compressed version doesn't meet your quality requirements.

PDF Compressor

Reduce PDF file size while maintaining visual quality with advanced compression algorithms and selective quality settings. Perfect for email attachments, web uploads, and storage optimization with professional compression.

compress

optimize

size

Share this tool:

Upload PDF

Select a PDF file to compress

Drop your PDF here

or click to browse files

Supports: PDF files only

Continue Your Pdf Journey

More tools you might find useful

Image Compressor

Compress images while maintaining visual quality

JPG Compressor

Reduce JPG file size while preserving quality

PDF to Images Converter

Transform PDF pages into high-quality images

PDF Splitter

Divide PDF documents into separate pages

🌈 Browse More Tools

All PDF Tools All Tools

Complete Guide: PDF Compressor

Everything you need to know about using PDF Compressor effectively

Related Tools

More tools you might find useful

Images to PDF

Convert images to PDF documents

Adjust PDF page orientation precisely

Rearrange PDF pages in custom order

reorder

pages

arrange

PDF Thumbnail Generator

Create thumbnail previews from PDF pages

thumbnail

preview

image

PDF Statistics Analyzer

Examine PDF content statistics and metrics

Determine total page count in PDFs

Convert PDF colors for dark mode compatibility

Add colorful text highlights to PDF documents

highlight

text

annotate

Related Collections

Collections that include this tool - discover more tools in these curated collections

PDF Optimization Tools

Optimize PDFs for smaller sizes. Compress files, remove blank pages, flatten forms, crop margins, and clean borders for efficient storage and faster sharing.

View collection