Performance, minimum bandwidth, thumbnail previews for PDF and InDesign Files with web content viewer
Hi,
We are considering using DPS with a web content viewer for large PDFs and/or InDesign files. The client using a web viewer might have very limited bandwidth (some as low as 256Kbps). We ask:
1 - How well does the web viewer perform with very large PDFs and InDesign files (500 MB+) with limited bandwidth? Does the file stream in chunks and the PDF shows as soon as the first page or two are available, with the rest loading in the background, or does the entire file come down in one part and then shown?
2 - Can PDF and InDesign files support thumbnail previews? For example, one image per PDF page and user can scroll forward and back.
Your thoughts and comments are greatly appreciated.
Thanks!
-Stephen
Hi Stephen,
The way the web viewer works is that it converts the PDF/InDesign files to PNGs along with additional HTML assets. Assets are downloaded as they’re ready for a given page (e.g. first, page 1 is filled with its assets as they become available, then page 2, etc), so a reader wouldn’t need to wait for the entire article to load. The next few pages are also loaded in the background, so the reader wouldn’t be likely to notice lag as they flipped through pages to the next page after reading the current one. So the lag will depend on the size of an individual page.
For your question around thumbnails, the web viewer does not load a preview image so the reader would need to wait for the assets I described above to load.
Hope this helps...
Brian
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