How to Compress PDFs Without Losing Quality

Published in Guides · EzSizer Toolkit

Why PDFs Get So Large

PDFs often contain uncompressed high-resolution images, embedded fonts, and hidden metadata. When you need to email a document, a 20MB PDF will often bounce back or get rejected by upload forms.

Lossless vs Lossy Compression

Lossless compression removes metadata and unreferenced objects. Lossy compression actually reduces the resolution of the images inside the PDF. For most forms and documents, a slight reduction in image DPI (to say, 150 DPI) is unnoticeable to the human eye but drastically reduces file size.

Using EzSizer

EzSizer's PDF compressor processes everything in your browser. It parses the PDF structure, downscales the images efficiently, and rebuilds the PDF locally. This means your private documents never leave your device.