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How to check if range-requests are in use?

See original GitHub issue

We are having a hard time serving large PDFs to our customers with pdf.js. Some investigation learned us that the concept of “range requests” could fix this. Therefore we tried to generate a fastWebView-enabled PDF with ghostscript:

gs -q -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -dCompatibilityLevel=1.5 -dFastWebView=true

The generated PDF is being served by Apache/2.4.18 which (correct me if I’m wrong) supports range requests.

Now how can I test that pdf.js actually uses range requests?

Issue Analytics

  • State:closed
  • Created 6 years ago
  • Reactions:3
  • Comments:19 (10 by maintainers)

github_iconTop GitHub Comments

3reactions
yurydelendikcommented, May 22, 2017

PDF.js has two other options, disableAutoFetch and disableStream. The former stops any range-requests downloading if enough data is fetched, the latter disables fetching for progressive download capable browsers. See also #7937 and https://github.com/mozilla/pdf.js/wiki/Debugging-PDF.js#url-parameters

0reactions
vedidinakarcommented, Aug 17, 2022

We have a pdf of size 200mb i want to load first 1 page once its downloaded to the browser. Can you please help me a way to achieve this

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