Check 12 / 19 LOW impact In the full checklist
Image file names optimized, not IMG_1234.JPG
What this check is
The file name is one of the few image signals you control before the page loads. A descriptive name helps image search and the alt text pair with it.
How to implement it
Rename the files before upload using lowercase words separated by hyphens: product, colour and view. Keep the naming convention documented so the next upload from a supplier follows it, and re-upload the worst offenders.
How to verify it
Inspect the image URLs on ten product pages and confirm each file name describes its content and uses the same convention.
All 197 checks, one Google Sheet
This page is the summary. The full checklist carries the priority, the impact score and the tool link for every check — all 197 of them, across 14 categories, as a Google Sheet and CSV with lifetime updates.
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