AppListingLab Journal

Make the next listing task easier.

Practical workflows, file checks and design decisions. Use the guides for store specifications and the Journal to work through a task.

PNG file inspection diagram: opaque RGBA pixels still include an alpha channel; 24-bit RGB has red, green and blue channels only.

Troubleshooting · 6 min read

How to diagnose rejected App Store screenshot uploads

Check the upload destination, actual pixel size and PNG alpha channel, then verify the corrected file before uploading it again.

Read the walkthrough →

The same calibration drawing resized with Fit, Fill and Stretch: Fit preserves the drawing with side bars, Fill crops its edges, and Stretch changes the circle's proportions.

Screenshot workflow · 5 min read

Resize app screenshots without losing the important UI

Compare Fit, Fill and Stretch with a reproducible crop example. Choose the target, preserve important UI and inspect each exported screenshot.

Read the walkthrough →

Google Play asset map showing four portrait screenshot files alongside a separate 1024 by 500 feature graphic and a 512 by 512 store icon.

Release preparation · 6 min read

Prepare Google Play screenshots and a matching feature graphic

Build a clear Google Play asset checklist: phone screenshots, a separate 1024 × 500 feature graphic, locale folders and file inspection before upload.

Read the walkthrough →

Two iPhone Duo screenshot canvases labelled outer 1398 by 2034 pixels and inner 2007 by 2853 pixels, with separate capture, caption and export checks.

Screenshot layouts · 6 min read

Plan iPhone Duo screenshots for the outer and inner displays

Use the accepted iPhone Duo dimensions, review each display's real app layout and keep the two screenshot sets aligned without stretching the interface.

Read the walkthrough →

Three Google Play copy fields with distinct limits: title 30 characters, short description 80 characters and full description 4000 characters.

Store copy · 7 min read

Write a Google Play app description from verified product facts

Write a Google Play title, short description and full description from real app features. Includes a food diary app example, character counts and a review checklist.

Read the walkthrough →

Android density ladder for a 400 by 240 pixel 4x source: mdpi 100 by 60, hdpi 150 by 90, xhdpi 200 by 120, xxhdpi 300 by 180 and xxxhdpi 400 by 240.

Asset workflow · 6 min read

Generate Android image densities from a correctly sized source

Work through a real 400 × 240 raster example, inspect mdpi–xxxhdpi PNGs and download the source and generated ZIP. Learn when to select a 3× or 4× base.

Read the walkthrough →