Donmai

Danbooru 2 Issues Topic

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MyrMindservant said:

There is something weird with post #2310878. It has sample 4,7 MB large (larger than its original size) and thumbnail 4,4 MB large. Resolutions are regular.
Perhaps it was a bug in sample/thumbnail generation process.

Attempting to open the sample image yields the following error message with Adobe Photoshop: "The file contains file info data which cannot be read and has been ignored".

Additionally, resaving the sample image in Photoshop, MSPaint, or IrfanView using the maximum JPG quality yields a file around half a megabyte.

SciFi said:

Many years ago I read about ways to hide a zip inside a jpg file, could be that is what you have. I doubt it's anything harmful, but the file should be sanitised.

Aren't Danbooru's samples generated automatically by the site?

fossilnix said:

Aren't Danbooru's samples generated automatically by the site?

They are, but it's redelegated to ImageMagick, which probably keeps the original metadata. It looks like it, indeed, could be a rarjpg, though I can't check right now, and I'll be as surprised if attached file is not stripped off.