Tichau/FileConverter

PDF to PNG - background goes to black

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#66 opened on Feb 5, 2019

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good first issuenew feature

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Description

I have been looking for a good utility to convert vector PDFs to PNG with small file sizes and configurable resolution. FileConverter delivers on both counts, but the resultant PNG files all have black backgrounds, making them unusable. Is there a way to fix that?

Also, when I right click the PDF and select FileConverter, the only option offered is "To PNG (paged)." Why are no other formats offered?

Sample PDF and resulting PNG attached. Sample PDF drawing.pdf sample pdf drawing 1 of 1

Thanks

Contributor guide

Research direction
Examine the PDF to PNG conversion code, specifically the handling of background color and transparency. Look for any default black background being set or alpha channel mishandling.
Tech stack
csharp
Domain
desktoptooling
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C#Image Processing
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60