The PixelUnik blog
Images, performance and SEO for Shopify merchants. Verifiable methods, not promises.
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Guides
What size should your Shopify product images be
Shopify resizes your images on the fly, but only from the file you upload. Here is the dimension to aim for, and why uploading bigger helps nobody.
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SEO
Empty alt or missing alt: what your image audit actually counts
A tool tells you hundreds of images have no description. Here are the two defects it adds together, and how to tell which one you have.
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Guides
Alt text for a whole Shopify catalogue: where to start
Nine hundred photos, nine hundred alt texts. The order that pays off first, one template per photo type, and the traps specific to catalogues.
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SEO
The filename of your Shopify product images
Shopify has no way to rename an image once it is uploaded, and a renamed image gets no redirect. What is worth fixing, and what is not.
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SEO
SEO title and meta description on a Shopify product page
Shopify leaves both fields empty, so Google writes the snippet itself. Where they live, what to put in them, and how to check.
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Guides
WebP, JPEG or PNG: which one for Shopify
Three formats, three uses that do not overlap. The wrong pick doubles a product page weight without anyone noticing.
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SEO
Writing alt text that helps shoppers and search engines
Alt text exists first for people who cannot see the image. Search benefit follows. Doing it backwards produces keyword stuffing.
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Measure your own images
The free audit reads your store and gives you the real weight of your product images, with nothing to install.