Optimize JPEGs

[pableu]

The images created by this service can sometimes be optimized 10% or more by tools like kraken.io or mozjpeg.

I think it would be worthwile to include and enable such optimizations by default.

I see that Thumbor has built in support for jpegtran, but it's not enabeld in thumbor.conf (and the binary is probably missing).

Could you add this feature? It would make this a much more viable alternative to commercial services like imgix.

[kkopachev]

From my understanding, jpegtran is pretty much useless, since PIL engine uses same libjpeg-turbo underneath as jpegtran from libjpeg-turbo-progs does. PIL engine does not save any additional meta, if thumbor configured to strip icc (filter) and strip exif (conf variable).
However, one could use jpegtran binary from mozjpeg, which could do different scans for progressive jpegs and apply some more heuristics to huffman coding.

[stevemorad]

We are testing a new update to support this request. Would anyone mind testing the following template and provide feedback if this is what you are looking for?
https://s3.amazonaws.com/solutions-test-reference/serverless-image-handler/latest/serverless-image-handler.template

[stevemorad]

gifscile, imgmin, jpegtran, optipng, pngcrush, pngquant, and mozjpeg have been included in v2.2.

Would you test and verify if the latest version addresses this issue?
https://s3.amazonaws.com/solutions-reference/serverless-image-handler/latest/serverless-image-handler.template

[asaghri]

Hello,

Thank you for including all the optimizers !
Unfortunately, when I enable mozjpeg we have an error in the lambda execution :
ERROR mozjpeg path '/var/task/mozjpeg' is not accessible
Any idea on how to resolve this ?

Thank you !

[lucassena]

Hello @asaghri, how can I test theses optimizations features?

[Jno21]

Hello,

I successfully made it work by building in a Docker image from amazonlinux but it required some changes in the yum install process and the building script ./build-s3-dist.sh.

I could share my changes if needed.

[lucassena]

Hello,

I successfully made it work by building in a Docker image from amazonlinux but it required some changes in the yum install process and the building script ./build-s3-dist.sh.

I could share my changes if needed.

Share plz?!

[leviwilson]

@lucassena I have #45 out there that has an example of a Dockerfile to build it.

It's possible it's out of date by now though. It's unclear to me how they are building the ./build-s3-dist.sh without a repeatable build (with docker build or the like).