Question

PDF file in Weblink takes wayyyy to long for public users to download and view

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Updated November 29, 2016

asked on November 18, 2016 • Show version history

Hi, we have a customer that is having a weblink concern with some large PDFs that are taking wayyy to long for her users to download and view. Basically, her public users open a PDF file from a Weblink portal and it takes them 10 minutes to view the document. 5 minutes to download, and another 5 minutes to view the document in Adobe.

The PDF file size is 288MB. I understand that downloading 288MB worth of data is gonna take about 10min. We can certainly optimize the PDF before uploading, but I just wanted to see if there's anything else that can be done to minimize the impact?

Has anyone else has come across similar challenges? And what does Laserfiche recommend we do in this situation?

Weblink v9.0.0.252

PDF size: 288MB

worth.png (96.34 KB)

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replied on November 22, 2016

If the users need to download the entire document, there are only two ways to make it download in less time - make the document smaller or make the connection faster. What are the possibilities for doing that?

The pdf shouldn't have to download twice. When the browser downloads it, it should just launch the viewer application with the temp file. It's possible there's some misconfiguration with the pdf viewer application.

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replied on November 21, 2016

bump, just wondering if Laserfiche has any recommendations???

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replied on November 28, 2016 • Show version history

From the screenshot it seems like WebLink is generating a PDF from a Laserfiche document (consisting of TIFF images and OCR text) that does not already have a PDF (electronic document) part.

You can check whether this is the case by logging into the same repository with Laserfiche Client (Windows Client or Web Client) and check if the document has a Electronic Document part.

If the document does not have a PDF part, WebLink will run the PDF generation on the web server, and this will take time.

If it is confirmed that WebLink is indeed generating a new PDF for the user, the next follow-up steps are:

Check whether the performance of PDF generation is normal (within expectation and explainable based on the document size and the hardware specs)
Consider whether PDF generation can be scheduled ahead of time, for all documents or a selection of documents in popular (anticipated) demand.
Consider whether the WebLink visitor statistics is normal.
Check whether the PDF request is made by a normal user, or by web search engine crawlers.

The time it takes for Laserfiche to convert an imaged document (TIFF, etc) into a PDF depends on many factors. One particular factor is whether image rendering takes place during this conversion. When image rendering does not take place, the conversion will take much less time, because it does not require image decode, modify and encode.

These configurations or annotations will cause image rendering to take place, and therefore will take more CPU processing and RAM usage during the image to PDF conversion.

Redactions
Laserfiche annotations that are applied to the PDF with "burn-in option"
- (Burn-in option refers to permanent alteration of the image to render the annotation. In contrast to PDF annotations, which are encoded as PDF metadata that are interpreted by PDF viewing applications)
- Laserfiche text annotations (underline, highlight, etc.)
- Laserfiche image annotations (lines, rectangles, freehand, sticky note, etc.)
Watermarks (such as group watermarks and tag watermarks)
- For VAR Demo systems, there is also demo watermarks.

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replied on November 29, 2016

Ryan, interesting read. Thanks for the information!

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PDF file in Weblink takes wayyyy to long for public users to download and view

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