Images should look good at full size. They should not be too blurry, pixelly, artifacty or grainy. Sometimes, the issue can be fixed by sizing down the images, but some images are not salvageable.
Our policy has always been to keep images at a good to excellent standard. This means that in some cases we prefer to have no image at all rather than having a very bad image.
Images should not be stretched nor squished (i.e. distorted) or have bars be inserted on the sides to get to the needed aspect ratio. They have to be cropped (i.e. cut).
If you find a 1984x2835px Finding Dory poster and want to correct the aspect ratio (1:1.43), the proper way to achieve this is to crop the extra pixels out. The resulting image should be a cropped 1890x2835px poster.
When an image is resized without maintaining the original proportions, it ends up stretched or squished. Notice the difference between the original image, the properly cropped image and images wrongly stretched to 1984x2976px or wrongly squished to 1890x2835px.
While 1920x1080px is our preferred minimal resolution for backdrops and 1000x1500px for poster and profile picture, this does not mean we want you to stretch smaller images (i.e. make them bigger) or systematically size down bigger pictures. Always upload the best quality pictures available.
There should be no watermarks or logos on the images that aren't part of the original image (e.g. don't upload this image but choose this one instead). Logos of production companies and distributors that are part of the original poster are fine to add.
Images should look natural. Please do not use color filters or any weird effects. We also recommend that only experienced image editors attempt to fix the tone and the colors of an image.
You can use whichever image software (e.g. Photoshop, GIMP, Paint) or online tool you prefer. Learn how to configure your workspace, crop and save images for the best results.
It's always better to ask questions than upload distorted or bad quality images.