Last week I had the smallest window of time without any pressing obligations at the end of the day, paired with enough energy to code something for fun. So I used it to lay down some more code for Remark.as.

I’ve been digging into the world of image parsing the last couple days, after fixing image orientation issues while introducing a new issue: image metadata (particularly for color correction) getting lost during processing.

In short, Go’s standard image/jpeg library tosses out metadata when you decode an image to transform it, as we do for images uploaded to Snap.as. So preserving that metadata means first parsing it out, running the transformations, then writing it back to the image when you encode it with the new transformations. Should be straightforward, right? Oh let’s see…