在模拟器上运行应用程序，并保存屏幕截图。 将这些截图重命名为4.7.1 (iPhone 6)， 5.5.1 (iPhone 6 plus)等等。

截至2017年6月14日更新，来源如下: http://help.apple.com/itunes-connect/developer/#/devd274dd925

截图说明

5.5-Inch Retina Display 1242 x 2208 pixels for portrait 2208 x 1242 pixels for landscape 4.7-Inch Retina Display 750 x 1334 pixels for portrait 1334 x 750 pixels for landscape 4-Inch Retina Display 640 x 1096 pixels for portrait (without status bar) 640 x 1136 pixels for portrait (full screen) 1136 x 600 pixels for landscape (without status bar) 1136 x 640 pixels for landscape (full screen) 3.5-Inch Retina Display 640 x 920 pixels for portrait (without status bar) 640 x 960 pixels for portrait (full screen) 960 x 600 pixels for landscape (without status bar) 960 x 640 pixels for landscape (full screen) 12.9-Inch Retina Display 2048 x 2732 pixels for portrait 2732 x 2048 pixels for landscape 9.7-Inch Retina Display High Resolution: 2048 x 1496 pixels for landscape (without status bar) 2048 x 1536 pixels for landscape (full screen) 1536 x 2008 pixels for portrait (without status bar) 1536 x 2048 pixels for portrait (full screen) Standard resolution: 1024 x 748 pixels for landscape (without status bar) 1024 x 768 pixels for landscape (full screen) 768 x 1004 pixels for portrait (without status bar) 768 x 1024 pixels for portrait (full screen) macOS One of the following, with a 16:10 aspect ratio. 1280 x 800 pixels 1440 x 900 pixels 2560 x 1600 pixels 2880 x 1800 pixels tvOS 1920 x 1080 pixels watchOS 312 x 390 pixels

我把这个页面收藏起来，经常回头看，但没有人提到更新的11英寸iPad pro的尺寸。1668 x2388。

下面是一个bash脚本，它将通用屏幕截图调整为适当的尺寸。到2020年，我还不能让iPhone 4模拟器在最新的xcode中运行，所以这对我来说是必要的。

#!/usr/bin/env bash

HERE="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

declare -A sizes
sizes["6-5-inch-iphone-xs-max"]="1242x2688"
sizes["5-8-inch-iphone-x"]="1125x2436"
sizes["5-5-inch-iphone-6"]="1242x2208"
sizes["4-7-inch-iphone-6"]="750x1334"
sizes["4-inch-iphone-6"]="640x1096"
sizes["3-5-inch-iphone-4s"]="640x920"
sizes["12-9-inch-ipad-pro-@3"]="2048x2732"
sizes["12-9-inch-ipad-pro-@2"]="2048x2732"
sizes["11-inch-ipad-pro"]="1668x2388"
sizes["10-5-inch-ipad-pro"]="1668x2224"
sizes["9-7-inch-ipad"]="1536x2008"

for i in "${!sizes[@]}"; do
    if [[ "$i" == *"ipad"* ]]; then
        [ -d "$HERE/ipad" ] || continue
        mkdir -p "$HERE/$i"
        cd "$HERE/ipad"
        for file in *.jpg; do
            [ -e "$file" ] || continue
            convert "$file" -resize "${sizes[$i]}"\! "$HERE/$i/$file"
            echo "scaled $file"
        done
    else
        [ -d "$HERE/iphone" ] || continue
        mkdir -p "$HERE/$i"
        cd "$HERE/iphone"
        for file in *.jpg; do
            [ -e "$file" ] || continue
            convert "$file" -resize "${sizes[$i]}"\! "$HERE/$i/$file"
            echo "scaled $file"
        done
    fi
done

要使用它，将它放在一个新目录中，并在它旁边创建一个/iphone和/ipad目录。把你的ipad和iphone截图放在这些文件夹里。运行该脚本，它将生成所有大小的命名文件夹。

ios_screenshots/
├── run.sh
├── iphone/
│   ├── screenshot_1.jpg
│   ├── screenshot_2.jpg
│   ├── screenshot_3.jpg
├── ipad/
│   ├── screenshot_1.jpg
│   ├── screenshot_2.jpg
│   ├── screenshot_3.jpg

另外，请注意，你可以设置透明度，即使你的图像实际上没有任何透明度。如果你用的是photoshop，选择“保存为网页格式”，取消选择“透明”，或者直接将图片转换成jpg格式。iTunes Connect似乎也拒绝透明度。

(在这里交叉发布我的答案:https://stackoverflow.com/a/25775147/798533)

对于任何想要上传图像分辨率的人(如果你想创建一些花哨的photoshop截图)，它们是:

iPhone 6: 750 × 1334 iPhone 6 Plus: 1242 × 2208

这里有很好的参考指南:http://www.paintcodeapp.com/news/iphone-6-screens-demystified(谈论iPhone 6+的分辨率和下采样)。

iPhone需要6.5 inc(1242 x 2688) - 5.5 inc(1242 x 2208)

12.9 inc(2048 x 2732)的iPad

你可以得到所有的inc和piksel大小 从链接