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Compress PDF Online

Compress PDF files locally to reduce file sizes for easy emailing and sharing.

Drop PDF file here or click to browse

Select a single PDF file up to 80MB

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About This Tool

PDF Compressor

Reduce the file size of your PDF documents instantly in your browser — no uploads to external servers, 100% private.

Why Use This Tool?

  • Compress large PDFs before emailing them to clients or colleagues
  • Reduce PDF size for uploading to portals that have file size limits
  • Make PDFs load faster on websites and online forms
  • Compress scanned documents without visible quality loss
  • No file leaves your browser — your documents stay completely private

Overview

Large PDF files can be rejected by email servers, fail to upload to government portals, and take too long to load. Our PDF Compressor reduces file size by optimising images, removing redundant metadata, and streamlining embedded resources — all locally in your browser. Your sensitive documents never leave your device.

How to Use

  • 1

    Upload Your PDF

    Drag and drop or click to upload your PDF file.

  • 2

    Select Compression Level

    Choose Low (best quality), Medium (balanced), or High (smallest size).

  • 3

    Compress

    Click Compress. The tool processes locally and generates the smaller version.

  • 4

    Review Size Reduction

    See before/after file sizes and the percentage reduction achieved.

  • 5

    Download

    Download the compressed PDF.

Frequently Asked Questions

Image-heavy PDFs can reduce 50–80%. Text-only PDFs compress 10–30%. Results vary by content type.
Yes. All compression happens locally in your browser. No file is uploaded anywhere.
Text layers are not affected. Only image quality is reduced. At Low compression, the change is barely noticeable.
No. Remove the password first using our PDF Unlocker tool.
Email attachments, government upload portals, and website embeds often have file size limits. Smaller PDFs load faster and are easier to share.