Does compressing a PDF make text blurry?

No. Vector fonts and character glyphs remain mathematical curves and stay pin-sharp at any zoom level. Only raster images are resampled.

What is the best compression level for email attachments?

Balanced (150 DPI) is ideal for email attachments, keeping PDFs under 5 MB while maintaining crisp readability on mobile and desktop screens.

No. DODDY processes all PDF streams locally in your browser memory using WebAssembly. Zero bytes are transferred to external servers.

Published: 2026-02-01 | Read Time: 4 min read

Learn how stream re-compression and raster downsampling reduce PDF file sizes by up to 80% while keeping text and vector lines crisp.

Does compressing a PDF make text blurry?: No. Vector fonts and character glyphs remain mathematical curves and stay pin-sharp at any zoom level. Only raster images are resampled.
What is the best compression level for email attachments?: Balanced (150 DPI) is ideal for email attachments, keeping PDFs under 5 MB while maintaining crisp readability on mobile and desktop screens.
Are my confidential documents uploaded to a cloud server?: No. DODDY processes all PDF streams locally in your browser memory using WebAssembly. Zero bytes are transferred to external servers.