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Free, browser-based CSV checking and cleaning tool. Validates CSV structure, data quality, duplicates and barcodes, with destination-specific rules for Amazon, Shopify, Etsy, eBay, Mailchimp and HubSpot. No file is uploaded to a server.
What CSV Preflight does: drop in your CSV, pick where it’s going (Amazon, Shopify, Etsy, eBay, HubSpot or Mailchimp), and it checks the structure, data quality and that platform’s rules, then fixes common issues for you.
🔒 Everything runs in your browser. Your file isn’t uploaded to my servers. ✅ Free for files up to 1,000 rows, no signup. ➡️ Walmart, TikTok Shop, WooCommerce and BigCommerce are coming next.
Why I built it: after 20 years in IT, I left this year to build my own tools. My first one came from frustration: KDP kept rejecting my book files with errors I couldn’t make sense of, so I built a checker to catch problems before upload.
CSV imports have the same problem. You upload a product feed or contact list, and the platform rejects it, or worse, accepts it and quietly drops rows, breaks dates or mangles special characters. Every platform has its own rules, and the error messages rarely tell you what’s actually wrong.
I’d love your feedback:
What’s the most painful CSV import error you’ve run into? I want to make sure it catches it.
Which platform should I add next?
If you try it on a real file, did it miss anything or flag something wrongly?
Thanks for checking it out. I’ll be here all day answering questions!
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About CSV Preflight on Product Hunt
“Check & Fix CSV Files Before Import”
CSV Preflight was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #142 on the daily leaderboard. Free, browser-based CSV checking and cleaning tool. Validates CSV structure, data quality, duplicates and barcodes, with destination-specific rules for Amazon, Shopify, Etsy, eBay, Mailchimp and HubSpot. No file is uploaded to a server.
CSV Preflight was featured in Marketing (470.7k followers) and E-Commerce (42.1k followers) on Product Hunt. Together, these topics include over 109.2k products, making this a competitive space to launch in.
Who hunted CSV Preflight?
CSV Preflight was hunted by Chinmay K. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how CSV Preflight stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Chinmay K
Hi Product Hunt!
What CSV Preflight does: drop in your CSV, pick where it’s going (Amazon, Shopify, Etsy, eBay, HubSpot or Mailchimp), and it checks the structure, data quality and that platform’s rules, then fixes common issues for you.
🔒 Everything runs in your browser. Your file isn’t uploaded to my servers.
✅ Free for files up to 1,000 rows, no signup.
➡️ Walmart, TikTok Shop, WooCommerce and BigCommerce are coming next.
Why I built it: after 20 years in IT, I left this year to build my own tools. My first one came from frustration: KDP kept rejecting my book files with errors I couldn’t make sense of, so I built a checker to catch problems before upload.
CSV imports have the same problem. You upload a product feed or contact list, and the platform rejects it, or worse, accepts it and quietly drops rows, breaks dates or mangles special characters. Every platform has its own rules, and the error messages rarely tell you what’s actually wrong.
I’d love your feedback:
What’s the most painful CSV import error you’ve run into? I want to make sure it catches it.
Which platform should I add next?
If you try it on a real file, did it miss anything or flag something wrongly?
Thanks for checking it out. I’ll be here all day answering questions!