Optimizing currently included PNGs

[0xB10C]

Optimized with optipng -o7. Will rebase and add the PNGs from the currently open PRs (e.g. #179, #180, #181) once they are merged (if necessary). Happy to squash before merging this PR.

refs #195

[bitschmidty]

@0xB10C Thanks for getting on this. Based on your original suggestion (thanks!) I optimized the compatibility matrix screenshots and logos for both the merged and unmerged compatibility commits. This PR finishes the job.

It looks like there are some images in /img/sponsors/ that were not changed. Were those already optimized?

add the PNGs from the currently open PRs

Can you clarify this for me?

[0xB10C]

I optimized the compatibility matrix screenshots and logos for both the merged and unmerged compatibility commits. This PR finishes the job.

add the PNGs from the currently open PRs

Can you clarify this for me?

Oh sorry, I did't know you had already optimized the PNGs in the open PRs (i.e. the ones mentioned above). Then all PNGs should be optimized.

It looks like there are some images in /img/sponsors/ that were not changed. Were those already optimized?

The images in img/sponsors/ are JPEGs and not PNGs. Not sure if we can really do lossless optimization on these. But I'll have a look.

[jnewbery]

#200 is merged. Can this be closed?

[0xB10C]

It looks like there are some images in /img/sponsors/ that were not changed. Were those already optimized?

The images in img/sponsors/ are JPEGs and not PNGs. Not sure if we can really do lossless optimization on these. But I'll have a look.

The three JPEGs in img/sponsors/, dong.jpg and newbery.jpg in img/team/ are already optimized according to the tool jpegoptim with default parameters.

#200 is merged. Can this be closed?

I think this PR should cover all PNGs. I'll mark it as ready for review.

[harding]

ACK 773cd55 . Lightly tested by looking at each modified image in my preferred image viewer (geeqie): geeqie $( git diff HEAD^^^^ --name-only ) . I didn't look at the originals for comparison, but each image matched what I'd expect from its file name.

Interestingly, both the original and modified copies of img/posts/rbf-in-the-wild/rbf-green-multiple-bump-options.png gave me a Warning: Failed to decode Exif metadata.. The image decodes fine, otherwise. Out of curiousity, @bitschmidty did you do something different for this image compared to the others you took for that blog post?

[0xB10C]

Thank you for the review @harding!

[jnewbery]

Thanks @0xB10C and @harding 🖼️