The canvas is not 1024 x 1024
Export an exact 1024 x 1024 pixel square. Do not stretch a smaller raster file; return to the source artwork so edges and details remain clean at the marketing size.
iOS App Icon Checker
Drop in a 1024 x 1024 app icon. This iOS app icon checker tests size and transparency against Apple's file rules.
Maintained by Icon Checker
Files stay in your browser. A pass is not App Store approval.
iOS app icon check
iOS Primary / AnyDrop a PNG here
Use the 1024 x 1024 iOS app icon.
App icon files are analyzed in this browser and are not uploaded.
Check this 1024 x 1024 iOS app icon
The iOS app icon checker reports size, format, and transparency against Apple's file rules.
- 1024 x 1024 dimensions
- PNG structure and decode
- Alpha channel and transparent pixels
What the iOS app icon checker verifies
The iOS App Icon Checker covers file format, exact canvas size, square aspect ratio, alpha metadata, and successful decoding. It deliberately separates a PNG alpha channel from transparent pixels.
| Check | Expected | How it is reported |
|---|---|---|
| PNG source | Valid PNG bytes | Pass or fail from file signature and bounded chunk parsing |
| Dimensions | 1024 x 1024 px | Exact measured width and height |
| Aspect ratio | 1:1 | Independent square verdict |
| Alpha channel | No alpha or tRNS | Fails on color type 4/6 or tRNS, even if all pixels are opaque |
| Decode | Complete image data | Browser decode success or failure |
| Artwork quality | Clear without baked-in mask | Manual review on the Scale Rail |
How to use the iOS App Icon Checker
Run the iOS app icon checker on the flattened 1024 x 1024 Primary / Any PNG you will put in Xcode. The page only measures that App Store source.
- 1
Choose the Primary source
Select the 1024 x 1024 PNG you plan to place in the app icon asset catalog. Do not substitute a screenshot, a rounded store preview, or a Dark or Tinted appearance variant.
- 2
Read the measured evidence
The iOS app icon checker reads the PNG signature, width, height, color type, alpha metadata, decoded pixels, and file structure without sending the image to a server.
- 3
Fix blockers and check again
Open any failed finding to compare measured and expected values. Re-export the source, then run the same file again before adding it to Xcode.
Which iOS app icon this page checks
This rule pack checks the flattened 1024 x 1024 Primary / Any artwork. Dark and Tinted appearance variants have different transparency behavior, so this page does not reuse the Primary alpha verdict for those files.
What still needs human review
The iOS App Icon Checker measures deterministic file facts; iOS applies the final corner mask. Baked-in rounding, App Store shadows, brand clarity, and small-size legibility stay as manual review. Dark and Tinted appearances, and the device sizes Xcode generates from the catalog, are outside this Primary / Any file check. A pixel heuristic cannot honestly predict App Review.
When to use a different checker
Use the iOS App Icon Checker for an iOS App Store Primary source, not a website favicon, apple-touch-icon, or Play listing graphic.
Website favicon
A favicon or apple-touch-icon is a website file. Audit those from a public URL, not by uploading an App Store PNG here.
Open Favicon CheckerGoogle Play listing icon
A Play Console listing icon is a 512 x 512 RGBA PNG. Do not apply this iOS Primary rule pack to that file.
Open Google Play Icon Checker
Common iOS app icon problems
These are the export mistakes the iOS app icon checker fails most often: the canvas is not 1024, alpha is still in the PNG, or Primary is mixed with Dark and Tinted.
An alpha channel remains in an opaque-looking PNG
Flatten the Primary artwork onto its intended background and export without alpha or tRNS metadata. The iOS App Icon Checker still flags a PNG that declares an alpha-capable color type, even when its transparent pixels have been filled.
Rounded corners are baked into the artwork
The iOS App Icon Checker expects full square artwork; let iOS apply the final mask. A pre-rounded image can create double rounding, unwanted borders, or transparent corner data.
Fine details disappear at small sizes
Inspect the Scale Rail at 16, 32, 64, and 128 pixels. Simplify hairlines, tiny lettering, or low-contrast details when the mark stops reading clearly.
Primary, Dark, and Tinted rules are mixed together
Use this page only for the flattened Primary / Any source. Review Dark and Tinted assets with their own appearance guidance instead of treating one alpha result as universal.
Before adding the icon to Xcode
A pass on this iOS app icon checker only clears the 1024 x 1024 file rules. Confirm the same source is the one that enters the Xcode asset catalog.
Use the final source artwork
Check the same 1024 x 1024 Primary file that will enter the asset catalog, not an earlier design draft.
Resolve every file failure
Confirm valid PNG bytes, exact dimensions, a square canvas, successful decoding, and no alpha or tRNS metadata.
Leave the platform mask out
Keep the source square and remove baked corner masks, platform shadows, and transparent corner padding.
Inspect small presentations
Use the Scale Rail to catch text, outlines, or contrast that fail when the icon is reduced.
Handle appearance variants separately
Do not infer Dark or Tinted readiness from this Primary / Any rule pack.
Verify the packaged app
After configuring the asset in Xcode, inspect the built app on the supported devices and appearances you ship.
Official sources
Rules were last reviewed on July 28, 2026. Each result carries a stable rule ID and version.
Apple’s Human Interface Guidelines and Xcode documentation define the source icon and asset-catalog expectations used by this checker.
iOS App Icon Checker questions
Questions about the 1024 x 1024 iOS app icon, not a website favicon or Play listing file.