You should really just do this without any web application. Just use a background shell script that does the resizing automatically on any image file that you dump into a certain folder. I have similar stuff set up for naming and sorting based on geo location data.
You can even make this work for mobile by having the folder that the script runs on synced to your phone. You take a pic on your phone, it gets synced to your desktop, converted by the script, synced back to your phone.
e0qdk@reddthat.com 2 weeks ago
Two quick ideas on possible approaches:
Static page route. You can just write some Javascript to load the image from a file input in HTML, draw it resized to a canvas (based on an input slider or other input element), then save the canvas to an image. (There might even be simpler approaches if I wasn’t stupidly tired right now…) This can be done in a single file (HTML with embedded JS – and CSS if you want to style it a little) that you toss on any web server anywhere (e.g. Apache, nginx, whatever). Should work for JPEG, PNG, and probably WebP – maybe other regular image types too. Benefit: data never needs to leave your device.
Process on server route. Use Python with a simple web server library (I usually opt for tornado for stuff like this, but flask or cherrypy or similar would probably work). Set up a handler for e.g. an HTTP POST and either pass the image into a library like Pillow to resize it or shell out to ImageMagick as others have suggested. (If you want to do something clever with animated GIFs you could shell out to ffmpeg, but that’d be a fair bit trickier…) The image can be sent back as the response. Be careful about security if you take this route. Probably want some kind of login in front of it, and run it in a VM or some other secure environment – especially if you’re using AI to kludge it together…
Best of luck and let me know if you need any help. Will probably have some time this weekend if you can’t get it on your own. Happy hacking!
perishthethought@lemm.ee 2 weeks ago
Ooooh! I started down the PHP path and that’s already working but now I like this idea of using JS and canvas more so I am going to go research that next. I have an nginx server running so this could work. (I wonder if this is how squoosh.app works since they claim it’s all client-side too?)
Great suggestion, I didn’t know was possible so thanks very much! 👍