Compress PDF Size

Shrink heavy, image-based PDF documents locally. 100% free and processed in your browser.

Upload PDF Document

Click or drag & drop a PDF file here.
Processed securely in your browser.

This tool uses Rasterization Compression. It works best for scanned documents and image-heavy PDFs by optimizing pages into highly compressed images.

Compression Presets Balanced (~50% savings)

Target Size

Images Text

Rasterizing all

Estimated Output: --

Original Size --

How to reduce PDF file size safely

Is your PDF file too large to attach to an email or upload to a portal? Otter Digitals' PDF Compressor optimizes the visual structure of your document to drastically reduce its file size without ruining readability.

Click the "Upload PDF Document" area above to select the heavy PDF file you want to shrink.
Choose your preferred Compression Quality using the slider.
Click Compress Now and wait a few seconds while it processes locally.
Download your newly compressed, lightweight PDF file!