PDFJS lines smaller than 0.75px not appearing consistently

[vivek6]

Sample_Lines.pdf

Configuration:

• Chrome 49.0.2623.75
• Windows 7
• PDF.js version: 1.1.215

Steps to reproduce the problem:

1. Open the attached pdf in pdfjs viewer.
2. lines drawn with 0.25 or 0.5 px is not appearing consistently.

What is the expected behavior? All lines should be visible

What went wrong? lines drawn with 0.25 or 0.5 px is not appearing consistently. If I add a
before the 0.25px or 0.5px lines, the lines magically appears.

Link to a viewer (if hosted on a site other than mozilla.github.io/pdf.js or as Firefox/Chrome extension): We have viewer integrated with Application. But this problem exists in Chrome Extension too.

[yurydelendik]

Could you show what do you mean? Looks fine on FF and Chrome for me (on Mac OS):

Also looks like you are using out-of-date PDF.js. Did you try the same file at http://mozilla.github.io/pdf.js/web/viewer.html?

[vivek6]

I Just tried in pdfjs chrome extension (on windows 7). I dont see the 0.25px line at all in section 1 and section 2. And in Section 3, I dont see 0.5 px line. This problem is big for us, as our customers print these docs and the print outs are missing too.

Update: yurydelendik, Just realized that in your 2nd screenshot 0.25px line is missing.

[yurydelendik]

The issue depends on OS and/or browser. Looks like other PDF Viewers (e.g. Mac OSX Preview) has similar issue.

[Snuffleupagus]

Given first of all the age of this issue, secondly the fact that it looks very much platform/browser-specific, and finally that recently a number of improvements have been made to the handling of minimum line sizes; does it still make sense to keep this issue open?