Free browser tool
Free App Store Screenshot Validator
Check App Store screenshot dimensions, format, orientation, alpha-channel risk, and the 10-image limit locally in your browser without uploading the files.
Short answer
Choose up to 10 PNG or JPEG screenshots. Genshot checks each file inside your browser and reports its dimensions, matching Apple display family, orientation, format, and alpha-channel risk.
Check screenshots on this device
Files are read by this page and are not uploaded to Genshot.
No files selected.
What the validator checks
- PNG, JPG, or JPEG filename and browser media type.
- Exact width and height against the maintained iPhone and iPad display families.
- Portrait or landscape orientation.
- PNG alpha-capable color type or transparency chunk.
- One to 10 selected screenshots.
The files stay on this device
The validator is a client-side utility. It reads file headers and image dimensions in the page. It does not call the Genshot API, create an account record, or upload screenshot bytes.
What a green check does not prove
- It does not submit files to Apple or guarantee App Review acceptance.
- It does not verify that screenshots accurately represent the current app binary.
- It does not judge caption readability, private information, trademarks, or source rights.
- It covers the maintained iPhone and iPad families, not every Apple platform.
After the file check
- Step 1
Review product truth
Confirm every caption matches the visible UI.
- Step 2
Check on a phone
Read the ordered set at real thumbnail size.
- Step 3
Review the upload
Inspect the exact locale and display family before replacement.
- Step 4
Verify Apple processing
Treat upload completion and Apple processing as separate states.
Sources and verification
Product capabilities and changing requirements were checked against these primary pages. External pages can change after the verified date above.
Related App Store screenshot resources
Review every accepted size
Use the maintained size guide when a file does not match a current display family.
Review every accepted size