How Do I Convert PDF to Djvu?

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How do I convert PDF to DjVu?

Think of PDF as a wrapper for several different raster formats. Most simple publishing programs simply take the image compress it to conventional JPEG and stick in the PDF wrapper. So, your PDF file ends up being a tiny bit bigger than the JPEG file. JPEG files are great for low-resolution color photographs. To get adequate fidelity of text you need a larger JPEG file. DjVu has a "mixed raster content model" so it can store the color part of the image at relatively low resolution (think of the color of the page or a small photograph next to the text) using a compression technique similar to JPEG20000 and the black and white text at high resolution using a different technique. That's why, for certain classes of documents we can create shockingly small DjVu files that look so good. PDF has come a long way since DjVu was invented and can actually support the same Mixed Raster Content Model as DjVu using superior compression techniques. I know a long time ago there was commercialization attempts to sell programs that did this. I don't recall any of them really catching on.

PDF documents can be cumbersome to edit, especially when you need to change the text or sign a form. However, working with PDFs is made beyond-easy and highly productive with the right tool.

How to Convert PDF with minimal effort on your side:

  1. Add the document you want to edit — choose any convenient way to do so.
  2. Type, replace, or delete text anywhere in your PDF.
  3. Improve your text’s clarity by annotating it: add sticky notes, comments, or text blogs; black out or highlight the text.
  4. Add fillable fields (name, date, signature, formulas, etc.) to collect information or signatures from the receiving parties quickly.
  5. Assign each field to a specific recipient and set the filling order as you Convert PDF.
  6. Prevent third parties from claiming credit for your document by adding a watermark.
  7. Password-protect your PDF with sensitive information.
  8. Notarize documents online or submit your reports.
  9. Save the completed document in any format you need.

The solution offers a vast space for experiments. Give it a try now and see for yourself. Convert PDF with ease and take advantage of the whole suite of editing features.

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