Agent skill

Asc Screenshot Resize

by malpern in malpern/VoxClaw

Resize and validate App Store screenshots for all device classes using macOS sips.

No licenceAuto-check passedMobile

Install Asc Screenshot Resize

skills CLI
$ npx skills add malpern/VoxClaw --skill asc-screenshot-resize -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install malpern/VoxClaw asc-screenshot-resize --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/malpern/VoxClaw.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/commands/asc-screenshot-resize .claude/skills/asc-screenshot-resize && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
asc-screenshot-resize
GitHub stars
208
Token cost
~1.2k tokens
SKILL.md length
451 words
Files
1
Skills in repo
9
Repo updated
First seen
Licence
None found

At a glance

Resize and validate App Store screenshots for all device classes using macOS sips.

  • Works in 7 steps: Fix Unicode filenames → Check current dimensions → Validate App Store readiness → …
  • Fixing screenshots for App Store Connect submission
  • SKILL.md covers Required Dimensions, Workflow and Guardrails
  • Calls python3

What it does

Asc Screenshot Resize is an agent skill from malpern/VoxClaw. Resize and validate App Store screenshots for all device classes using macOS sips. Use when preparing or fixing screenshots for App Store Connect submission.

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Mobile, covering App store release. It works with App Store Connect and macOS. The repository describes itself as: Give OpenClaw a voice — Let your agent speak from any Mac on your network.

When your agent uses it

  • Fixing screenshots for App Store Connect submission
  • Tasks that involve App store release

Example prompts

  • “/asc-screenshot-resize”

Requirements

  • Python 3

Workflow steps

7 steps, taken from the step headings in SKILL.md.

  1. Fix Unicode filenames
  2. Check current dimensions
  3. Validate App Store readiness
  4. Resize a single screenshot
  5. Batch resize all screenshots in a directory
  6. Generate multiple device sizes from one source
  7. Verify output

What it can do on your machine

Read from SKILL.md and the folder at commit 0a1cb0f. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • python3

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Asc Screenshot Resize loads about 1.2k tokens when it runs. Until then it costs about 45 tokens; SKILL.md has 451 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~45
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Without a licence we can't republish the file, so here is its outline and opening line. It has 451 words (~1,195 tokens).

“Use this skill to resize screenshots to the exact pixel dimensions required by App Store Connect and validate they pass upload requirements. Uses the built-in macOS sips tool — no third-party dependencies needed.”

— opening of SKILL.md by malpern
name
asc-screenshot-resize

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .claude/commands/asc-screenshot-resize of malpern/VoxClaw.

Open the folder on GitHubat commit 0a1cb0f

Compare with similar skills

Asc Screenshot Resize next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Asc Screenshot Resize compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Asc Screenshot Resize this skillmalpern/VoxClaw208—~1.2kAutomated safety check: PassNone
App Store Preflight Skillstruongduy2611/app-store-preflight-skills1.4k—~1.4kAutomated safety check: PassMIT
Asc Revenuecat Catalog Syncrorkai/app-store-connect-cli-skills1.1k3 repos~3.8kAutomated safety check: PassMIT
OdevioOdevio/Odevio-CLI423—~7.6kAutomated safety check: PassMIT
App Store Deployromankurnovskii/BrewMate300—~813Automated safety check: NotesMIT
Releasevaayne/mori303—~1.2kAutomated safety check: PassMIT

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More from malpern/VoxClaw

All 9 skills in this repo
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  • Asc Workflow

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    Define, validate, and run repo-local multi-step automations with asc workflow and .asc/workflow.json.

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    Build, archive, export, and manage Xcode version/build numbers with asc and xcodebuild before uploading to App Store Connect.

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    malpern/VoxClaw

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Categories

Questions about Asc Screenshot Resize

What does Asc Screenshot Resize do?

Resize and validate App Store screenshots for all device classes using macOS sips. Asc Screenshot Resize is an agent skill from malpern/VoxClaw. Resize and validate App Store screenshots for all device classes using macOS sips.

When should I use Asc Screenshot Resize?

Asc Screenshot Resize fits situations like: fixing screenshots for App Store Connect submission; tasks that involve App store release.

How do I install Asc Screenshot Resize in Claude Code?

Run `npx skills add malpern/VoxClaw --skill asc-screenshot-resize -a claude-code`. Or copy the skill folder (.claude/commands/asc-screenshot-resize in malpern/VoxClaw) into .claude/skills/asc-screenshot-resize in your project. Claude Code loads it when a task matches its description.

How do I install Asc Screenshot Resize in Codex?

Run `npx skills add malpern/VoxClaw --skill asc-screenshot-resize -a codex`. Or copy the skill folder (.claude/commands/asc-screenshot-resize in malpern/VoxClaw) into .agents/skills/asc-screenshot-resize in your project. Codex loads it when a task matches its description.

Can I use Asc Screenshot Resize in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add malpern/VoxClaw --skill asc-screenshot-resize -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/asc-screenshot-resize, .gemini/skills/asc-screenshot-resize, .github/skills/asc-screenshot-resize and .opencode/skills/asc-screenshot-resize in your project.

What does Asc Screenshot Resize need to run?

Going by SKILL.md and its folder, Asc Screenshot Resize needs the command-line tools its instructions call (python3). Our summary lists: Python 3.

Does Asc Screenshot Resize access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Asc Screenshot Resize safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Asc Screenshot Resize use?

No licence was found for Asc Screenshot Resize or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Asc Screenshot Resize use?

About 1.2k tokens (SKILL.md is roughly 4.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Asc Screenshot Resize?

Skills that share tags, products or a category with Asc Screenshot Resize: App Store Preflight Skills (truongduy2611/app-store-preflight-skills, 1.4k stars), Asc Revenuecat Catalog Sync (rorkai/app-store-connect-cli-skills, 1.1k stars), Odevio (Odevio/Odevio-CLI, 423 stars) and App Store Deploy (romankurnovskii/BrewMate, 300 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Asc Screenshot Resize?

malpern (a GitHub user) maintains it in malpern/VoxClaw, which has 208 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on July 25, 2026.

Source: malpern/VoxClaw on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.