[Poppler-bugs] [Bug 30979] New: Missing letters from text at different DPIs when rasterizing a page

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=30979

           Summary: Missing letters from text at different DPIs when
                    rasterizing a page
           Product: poppler
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: general
        AssignedTo: poppler-bugs at lists.freedesktop.org
        ReportedBy: bugzilla at greenwood.im


Created an attachment (id=39528)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=39528)
Page with text rasterizion issue ('J' of 'Jenny Powles')

Using pdftoppm version 0.14.1 on the server and also tested with pdftoppm
version 0.12.4 locally, both exhibit same problem.

This produces expected output:

pdftoppm -r 183 -png test.pdf test

But when the resolution is changed to 184, the letter 'J' from the beginning of
'Jenny Powles' disappears.

Initially I tried this with 50 dpi (works) and 300 dpi (same result, missing
'J'). Curious results when the DPI is set to 51, 52 and so on.

After a lot of trial and error, it seems to be between 183 and 184. I've
attached the problem page.

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