Comment 2 for bug 1598968

Hi Michael,

the thumbnailer keeps images up to 1920x1920 at their original size. Thumbnails are delivered to the application as JPG, so there can be some quality loss during format conversion, but it should almost always be unnoticeable or very minor. If a source image is in a format with an alpha channel (GIF, PNG, etc.) or is in SVG, the thumbnail is delivered to the application as PNG, to preserve transparency.

If you are seeing prominent scaling artefacts, it could be that the application has have asked for a thumbnail at a small size and then upscaled it for display. Alternatively, there might be a problem in the thumbnailer with image conversion.

To be sure, could you please attach the original song that exhibits this problem, together with an exact description of how you navigated to the blurry image in the music app? With that, we can have a look at why things are not looking right.