PDF vs DjVu: When to Use Which
DjVu was specifically designed for scanned documents and images, achieving impressive compression ratios — often 3-10x smaller than PDF for scanned content. Despite this technical advantage, PDF's universal ecosystem dominates. Here's when each format genuinely shines.
Understand the key differences between these formats and when to use each one.
PDF vs DjVu: When to Use Which — Feature Comparison
| Feature | SublimePDF | DjVu |
|---|---|---|
| Scanned document compression | Good — but files can be large | Excellent — 3-10x smaller than equivalent PDF |
| Software compatibility | Universal — every browser, every OS | Limited — requires DjVu viewers |
| Text content (digital) | Excellent — native text support | Poor — designed for images, not text |
| OCR text layer | Well-supported by many tools | Supports hidden text layer |
| Image quality at small sizes | Good with JPEG2000 compression | Superior for scanned text and line art |
| Browser viewing | Built into every browser | Requires browser plugin or extension |
| Editing tools | Hundreds of editors available | Very few editors exist |
| Standard adoption | ISO standard, globally accepted | Niche format with limited adoption |
| Mixed content (text + images) | Handles well | Separates layers for better compression |
| Library / archive usage | Primary format for digital libraries | Used by some academic archives (archive.org) |
Key Differences
The Verdict
DjVu is technically superior for scanned document compression, which is why you'll find it on sites like Internet Archive. But its lack of universal software support makes it impractical for general use. PDF is the pragmatic choice for nearly all scenarios — it works everywhere, with every tool. If you receive DjVu files, converting to PDF ensures wider compatibility.
SublimePDF's client-side architecture is built on WebAssembly and processes files in the PDF open standard (ISO 32000), ensuring compatibility and privacy across all platforms.