📚 Knowledge Center
Learn About PDF Optimization
Expert guides on file compression, document management, and solving real-world upload challenges.
Expert guides on file compression, document management, and solving real-world upload challenges.
Step-by-step guide for the most common file size limit.
Read guide →Advanced techniques for strict government requirements.
Read guide →Real file limits, readability rules, and how to organize evidence.
Read guide →A decision tree: compress, split, or re-scan - and when each wins.
Read guide →DPI, color, and quality settings that shrink scans safely.
Read guide →Why 25MB limits lie, and the size that actually delivers.
Read guide →No-app workflow with Safari, Files, and the Notes scanner.
Read guide →Chrome workflow, Drive scan settings, and finding Downloads.
Read guide →Why text stays sharp, where softness comes from, and choosing a level.
Read guide →Common causes and quick fixes for oversized PDFs.
Read guide →Technical guide to preserving document quality.
Read guide →iPhone and Android guide for on-the-go compression.
Read guide →We tested 15 tools. Here's what actually works.
Read guide →Combine multiple files into one professional document.
Read guide →Extract specific pages or separate into new files.
Read guide →Turn images into professional PDF documents.
Read guide →Make PDFs editable with proper conversion techniques.
Read guide →