PDF.js eats a lot of memory

I have five PDFs open in my browser being each size of ~ 1 MB = > 5 MB. (Looked up by downloading them) However, pdf.js uses combined 457 MB of RAM (162 + 132 + 70 + 56 + 23 MB) to view these documents. Needless to say, a pdf of 100 MB or more open with pdf.js stalls the browser all completely. I find the massive 100 times the pdf size weird use of memory. Run away somewhere or what?

It seems that there are existing bugs for this issue: https://bugzilla.mozilla.org/show_bug.cgi?id=881974 and https://bugzilla.mozilla.org/show_bug.cgi?id=868949. So, there are developers working on the issue.

As a solution, if you want, you can try to use another Viewer:

https://support.Mozilla.org/en-us/KB/disable-built-PDF-Viewer-and-use-another-Viewer

Tags: Firefox

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