PC gaming enthusiast and junior software developer. Also a beginner artist, but ended up halting my studies due to the rise of AI Art. Hoping to get back into digital painting soon.
If you are on windows you can open the image with the standard windows Photos app. Right click the image and there should be an option to resize the image.
Then select Percentage to resize while maintaining the aspect ratio. You can then drop this height or width value and/or change the image into jpg. It will show how much storage space the image will take at the bottom.
I think the new beta features made it a lot better. Mainly Custom instructions and the code interpreter. Using them generates much better responses.