Feature request: support output of progressive images

[edwardhorsford]

It would be great if you could choose to output progressive jpegs, or have them be progressive by default. Progressive images appear to load faster.

[andismith]

Not had a chance to try it myself, but this may work (let me know if it does). Add an option to your image configuration with:

customOut: 'interlace:plane'

[edwardhorsford]

Thanks for the fast reply. Sadly doesn't work. I get this in the console:

Warning: Command failed: gm convert: Unable to open file (plane) [No such file or directory].

Reading the docs I think you want something like -interlace: Line as opposed to plane.

[edwardhorsford]

Don't think it's inserting the right args. If I add image.interlace('line'); right before the write operation on line 379 it works.

[iparr]

👍 for supporting this.

[johnv-git]

Take a look at Issue #96
Once customIn is fixed, you can have interlacing for free.