SuperToolsOnline
Professional Tools • Private by Design

PDF Compressor - Reduce File Size Online

Shrink PDF files dramatically online while keeping content readable with our PDF Compressor. Compress large PDFs for email, cloud storage, or web uploads using an adjustable quality slider for perfect size-to-quality balance. Fast, private, and browser-based—no uploads or watermarks.

Size Optimizer

Reduce the storage footprint of your PDF documents

Share This Tool

About This Tool

Learn what makes this tool special

Compress PDF files online for free with our advanced PDF compressor. Reduce PDF file sizes instantly while maintaining document quality and readability. Perfect for compressing large PDFs for email attachments, web uploads, cloud storage, and faster sharing. Our browser-based compressor uses sophisticated algorithms to optimize images, fonts, and document structure without compromising text clarity. Choose from multiple compression levels to balance file size and quality. Supports batch compression of multiple PDF files with no size limits. All processing happens locally in your browser - complete privacy and security guaranteed. Download your compressed PDFs immediately with detailed compression statistics and file size savings.

Key Features

What makes this tool special

  • Compress PDF files to reduce file size
  • Multiple compression quality levels
  • Batch compression for multiple PDFs
  • Advanced image and font optimization
  • Maintains document formatting and text clarity
  • No file size limits or quantity restrictions
  • 100% browser-based processing - no uploads
  • Instant download of compressed PDFs
  • Detailed compression statistics and savings
  • Mobile-friendly responsive interface
  • Secure local processing with complete privacy
  • Support for all PDF versions and formats
  • Custom compression settings and options
  • Preview compression results before download
  • Export compression reports and analytics
  • Compatible with all modern browsers

Quick Guide

Master this tool in seconds

  1. 1
    Click 'Choose PDF Files' or drag & drop your PDFs
  2. 2
    Select compression quality level (high, medium, low)
  3. 3
    Choose additional compression options if available
  4. 4
    Click 'Compress PDFs' to start the process
  5. 5
    Wait for the compression to complete
  6. 6
    Download your compressed PDF files
  7. 7
    Compare original vs compressed file sizes

Common Questions

Everything you need to know

Q.How much can I reduce PDF file sizes?

A.

Compression ratios vary by content, but typically achieve 30-80% size reduction depending on images and quality settings.

Q.Will compression affect PDF quality?

A.

Text remains clear, but image quality may reduce at higher compression levels. You can adjust quality settings to balance size vs quality.

Q.Is there a limit to PDF file sizes?

A.

No limits! Compress PDFs of any size with our browser-based processing.

Q.Can I compress multiple PDFs at once?

A.

Yes, batch compression allows you to process multiple PDF files simultaneously.

Q.Are my PDFs uploaded to a server?

A.

No, all compression happens locally in your browser. Your PDF files never leave your device.

Q.Does compression work on all PDF types?

A.

Yes, supports all PDF versions including scanned documents, images, and text-based PDFs.

Q.Can I preview before downloading?

A.

Some tools offer preview, but generally you'll see compression statistics before final download.

Q.Is the compression reversible?

A.

Compression is lossy for images but text formatting is preserved. Always keep original files as backups.

You Might Also Need

Recommended next steps

Image Compressor – Compress Images Online

Recommended Next Step

PDF Merger - Combine Multiple PDFs Online

Recommended Next Step

Convert JPG to PDF. Images JPG to PDF online

Recommended Next Step

PDF to Image Converter - Convert PDF to JPG/PNG Online Free

Recommended Next Step

PDF Cropper - Remove Margins & White Space

Recommended Next Step

Word to PDF - Convert your DOC to PDF

Recommended Next Step