The Email Limit Dilemma
Most corporate email servers (like Outlook or Gmail) impose a strict 20MB to 25MB limit on attachments. For professionals dealing with architectural plans, media kits, or legal portfolios, a single PDF can easily exceed 50MB. When you reach this threshold, your workflow stalls.
Traditional solutions often involve uploading sensitive documents to external cloud servers, which introduces a significant security risk. At RefineDoc, we believe document processing should be fast, effective, and—most importantly—private.
shield How Client-Side Compression Works
Unlike traditional converters, RefineDoc uses WebAssembly to perform the heavy lifting directly inside your browser. Your document never leaves your device. The process follows three distinct steps:
- Structure Analysis: The browser parses the PDF's internal tree to identify redundant metadata.
- Image Downsampling: High-DPI images are recalculated to 144-150 DPI—perfect for screens but significantly lighter.
- Stream Optimization: PDF streams are re-compressed using the latest Flate algorithms.
Lossless vs. Lossy Comparison
Understanding the difference is critical for maintaining professional document integrity.
| Feature | Lossy Compression | Lossless Compression |
|---|---|---|
| Reduction Size | Up to 90% | 10% - 30% |
| Visual Quality | Variable (Slight blur) | Perfect (No change) |
| Best Use Case | Email, Web Viewing | Archiving, High-res Print |
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