Annotated images (version 1.2.7) are always in PNG?

[juanbretti]

Hello, Quick question.

When annotating an image, is the file always saved as PNG? Even when the original was JPEG, and the actual filename has extension .jpg I do understand you are trying to preserve transparency. That's why you are using PNG?

Thank you! Great idea to have a quick annotation tool!

SYSTEM INFO:
    Obsidian version: v1.7.7
    Installer version: v1.7.7
    Operating system: Windows 11 Pro 10.0.22631
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    Language: en
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        1: Text Format v3.1.0
        2: Templater v2.9.1
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        4: Calendar v1.5.10
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        6: Homepage v4.0.7
        7: Text Extractor v0.5.2
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        10: Excalidraw v2.6.7
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        15: CSV Codeblock v1.1.0
        16: Mind Map v1.1.0
        17: Plugin Update Tracker v1.6.0
        18: Image Converter v1.2.7

[xRyul]

Another option is to have WEBP embedded into formats which do not offer transparency. This technically would lower the file size too. However, it might break previews and thumbnails on some setups. Thus, PNG was the safest.

Or embed PNG into PNG, WEBP into WEBP etc. and then JPG/JPEG would have white or black background. But this makes it much harder to deal with different color schemes e.g.: when flattening. Thus again, in this case PNG is simply more universal too.

If you would like to play around with it:

• main-webp.zip - this will embed webp, and provide slightly lower file sizes, but might break previews etc.
• main-preserve_original.zip - if it is jpg, jpeg, gif then it will flatten it, if png it will embed png, if webp then embed webp

[juanbretti]

@xRyul , you have very good points. I agree with you that PNG is the safest way to keep transparency. For that scenario, maybe I would recommend renaming the file extension to .png, so it is clear for the user.

Another solution could be to add a feature to remove transparency (set a solid background). You might need to consider settings for:

• Remove transparency
• Saving format for the composite image (.jpg, .webp, .png, same as original, same as "Convert > Convert to",...)
• Define a default background color.
  • Maybe you could copy the note background color from Obsidian as default

By the way, this annotations is a very cool feature for this plugin.