asc-screenshot-resize
by rudrankriyamasc-screenshot-resize helps prepare App Store Connect screenshots by checking current accepted sizes with the asc CLI and resizing or validating images with macOS sips. Use this asc-screenshot-resize guide for Design Implementation workflows, release fixes, and submission-ready screenshot sets.
This skill scores 78/100, which means it is a solid directory listing candidate for users who need App Store screenshot resizing and validation. The repository gives enough operational detail for an agent to trigger the workflow correctly, discover current sizes from `asc`, and use macOS `sips` for local prep with less guesswork than a generic prompt.
- Clear, task-specific trigger: resize and validate App Store screenshots for submission.
- Good operational clarity: instructs agents to query current sizes from `asc` instead of relying on a stale hard-coded table.
- Useful workflow guidance: includes filename sanitization and validation commands that reduce common macOS screenshot issues.
- No install command or supporting scripts/resources, so adoption depends on the user already having the right CLI and macOS tooling.
- The excerpt shows a truncated workflow and limited edge-case coverage, so agents may still need judgment for nonstandard device targets.
Overview of asc-screenshot-resize skill
What asc-screenshot-resize does
The asc-screenshot-resize skill helps you prepare App Store screenshots for upload by checking current accepted sizes and resizing or validating images with macOS sips and the asc CLI. It is for the practical job of getting screenshots submission-ready without guessing dimensions from an outdated chart.
Who should use it
Use the asc-screenshot-resize skill if you manage App Store Connect assets, fix screenshot exports for release, or need a repeatable way to validate device-specific screenshot sets. It is especially useful for Design Implementation workflows where design output must match App Store Connect requirements exactly.
Why this skill is different
The main value is that asc-screenshot-resize does not depend on a hard-coded size table inside the skill. It expects the CLI to provide the current source of truth, which reduces drift when Apple changes accepted screenshot dimensions.
How to Use asc-screenshot-resize skill
Install and verify the skill
Install the skill with npx skills add rudrankriyam/app-store-connect-cli-skills --skill asc-screenshot-resize. After install, open skills/asc-screenshot-resize/SKILL.md first, because it defines the workflow and the exact validation commands. Then inspect your local file tree for any surrounding conventions in the parent project before you batch-process assets.
Start from the current size matrix
For asc-screenshot-resize usage, begin by asking the CLI what sizes are currently accepted:
asc screenshots sizes --output table
asc screenshots sizes --all --output table
Use the --all view when you need support for less common targets such as Apple TV, Mac, Vision Pro, Watch, or iMessage. This step matters because the skill is designed around current platform data, not memory or static docs.
Prepare inputs before resizing
Before running a resize pass, clean filenames and inspect image metadata. Hidden Unicode spaces can break batch tools, and mismatched dimensions can make an otherwise good screenshot fail validation. A strong prompt or task request should specify the target device type, source folder, expected output folder, and whether you need strict validation only or resize plus validation.
Use a concrete workflow prompt
A good asc-screenshot-resize guide request is specific, not generic. For example: “Validate the screenshots in ./screenshots/iphone for IPHONE_65, fix filename issues first, then resize only if needed and report any images that still fail dimensions.” That gives the skill enough context to choose the right path and makes the output easier to trust.
asc-screenshot-resize skill FAQ
Is asc-screenshot-resize only for App Store Connect?
Yes, its purpose is App Store Connect screenshot prep and validation. It is not a general image editing skill, and it is not meant to replace a design tool for layout changes, cropping decisions, or branding review.
Do I need the asc CLI for this skill?
Yes. The skill depends on asc for the current screenshot-size source of truth and for validation commands. If you only want generic image resizing, a normal prompt or standalone script may be simpler.
Is asc-screenshot-resize beginner-friendly?
Mostly yes, if you can follow a basic terminal workflow. The main learning curve is understanding device-type targets and reading validation output. Beginners usually get the best results when they start with one device set and verify the accepted sizes before touching the files.
How to Improve asc-screenshot-resize skill
Give it the real target, not a vague goal
The biggest quality gain comes from naming the exact destination: device type, folder path, and whether the screenshots are for iPhone, iPad, or another App Store Connect target. asc-screenshot-resize works best when it can validate against a concrete upload target instead of trying to infer intent from filenames.
Reduce avoidable failure modes
Common problems are stale dimension assumptions, hidden filename characters, and mixing screenshots from different devices in one folder. If your first run fails, check filename sanitation and compare the image metadata with sips before rerunning the resize or validation pass.
Iterate with validation, not guesswork
Use the first output as a diagnostic pass. If a screenshot is off by even a small amount, fix the source export or crop policy instead of repeatedly resizing the same bad file. For asc-screenshot-resize for Design Implementation, the strongest feedback loop is: validate, correct the source design export, then validate again until the set matches the current App Store Connect requirements.