How to reduce PDF size without losing quality
By VoraTools Editorial
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Published on Aug 14, 2026
Large PDF documents can be difficult to email or upload. The secret to compressing PDFs lies in managing image assets inside the document:
Why are PDFs so large?
PDFs often contain high-resolution scans or photos at 300 DPI. For standard screen reading, 72 to 150 DPI is more than enough.
Using Fileora PDF Compressor
Our compiler uses Ghostscript headlessly. Selecting "Balanced Compression" optimizes images inside the PDF to 150 DPI and converts colors to RGB, reducing the file size by up to 80% while keeping text perfectly sharp.
Why are PDFs so large?
PDFs often contain high-resolution scans or photos at 300 DPI. For standard screen reading, 72 to 150 DPI is more than enough.
Using Fileora PDF Compressor
Our compiler uses Ghostscript headlessly. Selecting "Balanced Compression" optimizes images inside the PDF to 150 DPI and converts colors to RGB, reducing the file size by up to 80% while keeping text perfectly sharp.