837554 - pdf.js In some PDF documents, reading texts are diffcult because of background images or texts.

Status: RESOLVED DUPLICATE of bug 799695

(Firefox :: PDF Viewer, defect, P3)

Description

[rshimazu]

User Agent: Mozilla/5.0 (Windows NT 6.0; rv:19.0) Gecko/20100101 Firefox/19.0
Build ID: 20130130080006

Steps to reproduce:

I accessed to 
http://www.koryu.or.jp/nihongo/ez3_graphics.nsf/DBBDC3186266DE0049257791002967FD/$File/1-24.pdf?OpenElement

The background image is too dark. It is hard to read the texts.

Likewise,
http://www.numark.jp/products/ns6/data/ns6_product_overview_JP_web.pdf
The background text "NS6" is too dark. It is still possible to read the main texts but Adobe Reader shows differently and more naturally.


Actual results:

The background image or texts' thickness are invalid. So it becomes hard to read the texts.


Expected results:

Pdf.js should show as Adobe Reader shows.

Comment 1

[(mostly gone) XtC4UaLL [:xtc4uall]]

Confirmed with Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20130204 Firefox/21.0 ID:20130204030941 + PDF.js 0.7.184.

Comment 2

[Mihaela Velimiroviciu (:mihaelav)]

Dupe of bug #799695?

Comment 3

[Masatoshi Kimura [:emk]]

Yes.

Comment 4

[rshimazu]

I confirmed this bug has been fixed with pdf.js addon 0.7.390 on Firefox 19.
Thank you.

Comment 5

[Masatoshi Kimura [:emk]]

As an aside, the performance problem of <http://www.koryu.or.jp/nihongo/ez3_graphics.nsf/DBBDC3186266DE0049257791002967FD/$File/1-24.pdf?OpenElement> was fixed by <https://github.com/mozilla/pdf.js/pull/2978>.