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🖼️ Gumroad Image Preflight
Inspect a real Gumroad cover and thumbnail pair, render safe-zone previews, and get PASS, REVIEW, or REWORK findings before upload.
Free
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You say
A 1280x720 RGB cover and a separately composed 800x800 RGB thumbnail.
Your agent does
Gate: PASS. Both files are readable web formats, meet the review baselines, use separate compositions, and have generated safe-zone previews ready for visual review.
About this skill
Gumroad Image Preflight checks the actual PNG, JPEG, or WebP files you plan to upload. It reports dimensions, ratio, format, mode, transparency, file size, and hashes; catches undersized, non-square, or reused compositions; and renders separate cover and thumbnail safe-zone previews. The result is PASS, REVIEW, or REWORK with exact file facts. It never signs in or uploads anything.
How to install
Drop the file into your AI Agent. Works with Claude, Cursor, ChatGPT, and 20+ more.
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Creator
JustHandled Labs builds focused agent skills for the work nobody wants to do by hand. Each one is a single repeatable job done well: catching the security and data mistakes that quietly ship, keeping docs and tests honest, gating the commands an agent is about to run, sharpening writing, and handling the founder chores around launches, outreach, and brand setup. Not generic AI productivity. Specific workflows that are easy to run, review, and repeat. Maintained by H.J. Westerfield, with a background in communications, editing, project coordination, customer support, and practical AI systems. Tools for people who want useful automation without theatrical complexity.
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