App Preview checker
Check an App Store preview video against Apple's specs before you upload it: size, frame rate, codec, length and audio. It runs in your browser; the file never leaves your computer.
Checker questions
- Is my video uploaded?
- No. The checker reads the file's header in your browser and never sends the video anywhere, so it also works for unreleased apps.
- Which checks does it run?
- Resolution against every App Preview device size, frame rate (30 fps at most, constant), codec and H.264 level, bitrate, duration (15 to 30 seconds), the audio track (stereo AAC at 44.1 or 48 kHz), container and file size.
- Can it see device frames or prices in the video?
- No: it checks the file's technical specs, not what the frames show. Keep previews frameless and leave prices out of captions yourself.
Make previews that pass on the first upload
ShowTake films your app with your coding agent and exports App Previews that already pass every check on this page.
Download for Mac