Downloaded images are larger than expected compared to the original file

[shjryan]

Browsers

Chrome version: 76.0.3809.100 (Official Build) (64-bit)
Firefox version: 68.0.2 (64-bit)

Issue

When downloading pictures, the file sizes are bigger than expected.

Browser	Name	Original	Downloaded	Diff
Firefox	image1	21,054,684 bytes	62,930,672 bytes	198.89%
Chrome	image1	21,054,684 bytes	47,848,001 bytes	127.26%
Firefox	image2	4,137,797 bytes	17,492,908 bytes	322.76%
Chrome	image2	4,137,797 bytes	13,552,186 bytes	227.52%

Two images were used for testing:

• image1 exported from Adobe Lightroom with q100
• image2 exported from Adobe Lightroom with q92

Suggestion

Image quality slider settings for users with a default of q95 or lower