Drop your Shopify product CSV export and instantly spot the errors that break imports — empty handles, missing titles, missing or zero prices, duplicate SKUs, imageless products and more.
Your file never leaves your browser — 100% private. Nothing is uploaded.
Drag & drop your products.csv here
…or pick a file. It is parsed right here in your browser.
Export your products from Shopify (Products → Export → CSV) and drop the file here, or load the sample.
The file is parsed locally with JavaScript. Nothing is uploaded — it never touches a server, so it is completely private and free.
Get a dashboard of import-breaking issues, plus exactly how Lasso would fix each one without the spreadsheet.
This checker is 100% client-side. Your CSV is read with your browsers built-in FileReader and analysed in JavaScript on your own machine — there is no upload, no server, no database, and no cost. Close the tab and the data is gone. We never see your products.
Lasso is a Shopify bulk editor you talk to. Change prices, tags, SEO, titles and more across your whole catalog from chat — with a visual diff before every apply and one-click undo after. Free to install.
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