1743245 - Grided PDF file lines rendered too thick

Status: VERIFIED FIXED

(Firefox :: PDF Viewer, defect, P1)

Description

[wasowski02]

Attachment: Zip files containing the PDF and screenshots of how it is rendered on different platforms

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:94.0) Gecko/20100101 Firefox/94.0

Steps to reproduce:

Open the file Example.pdf file provided in the zip archive.

The file was generated from the reMarkable tablet, but that shouldn't matter.

Actual results:

The grid lines are rendered quite thick, which makes it sometimes difficult to read.

Expected results:

Since both the default Ubuntu pdf viewer, Adober Acrobat for Android, Chromium and Google Drive render the lines much thinner I believe they should also be thinner in Firefox (screenshots of different platforms attached).

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Firefox::PDF Viewer' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 2

[Alin Ilea, Desktop Test Engineering [pto until 01.09]]

Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:96.0) Gecko/20100101 Firefox/96.0

Hi,

I am able to reproduce the issue in release 94, beta 95.0b12 and latest nightly 96.0a1 (2021-11-29) on Windows 10 and Ubuntu 20.04 using the attached file.

Thanks for your input.

Comment 3

[Kenan]

Attachment: Example.pdf

Comment 4

[GitHub Bugzilla PR Linker]

Attachment: Link to GitHub pull-request: https://github.com/mozilla/pdf.js/pull/14491

Comment 5

[Marco Castelluccio [:marco]]

This is a regression from https://github.com/mozilla/pdf.js/pull/12869, so from the pdf.js update from bug 1691143.

Comment 6

[GitHub Bugzilla PR Linker]

Attachment: Link to GitHub master push: https://github.com/mozilla/pdf.js/commit/838909f8c185694663ce77124fb07a00742619df

Commit merged into master by GitHub
Authored by calixteman (calixteman)

Comment 7

[Marco Castelluccio [:marco]]

I can't see any difference in the rendering after bug 1752574 (https://github.com/mozilla/pdf.js/pull/14491), so it looks like this isn't fixed yet.

Comment 8

[Marco Castelluccio [:marco]]

The rendering for Calixte improved, so probably https://github.com/mozilla/pdf.js/pull/14491 was at least useful to fix the bug for some users.

Comment 9

[Kenan]

Marco, on Windows this is fixed for me, which OS are you using?

Comment 10

[Marco Castelluccio [:marco]]

(In reply to Kenan from comment #9)

Marco, on Windows this is fixed for me, which OS are you using?

I'm on Linux. This might also depend on the resolution of the screen or scaling (I have a 3840x2160 screen with 300% scaling).

Comment 11

[wasowski02]

I can confirm that it is fixed for me on the beta snap channel: firefox (beta) 99.0b1-1 from Mozilla

Comment 12

[Ardelean Oana, Desktop Test Engineering [:oardelean]]

I reproduced this issue on Firefox 98.0(20220304153049) on Linux x86_64(Ubuntu 20.04). Confirmed as fixed on Firefox 99.0b3(20220313185831) and Nightly 100.0a1(20220314094248) on Ubuntu 20.04, macOS Big Sur 11 and Win10 64-bit.