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CSV Preflight

Inspect CSV issues locally before import

Mac
Productivity
Developer Tools
GitHub
Visit WebsiteSee on Product HuntGithub ⧉App Store ⧉

Hunted byYuichi ChibaYuichi Chiba

Check CSV encoding, quoting, headers, rows and column rules on your Mac. Export a CSV report. Scan only; no repairs. Up to 256 MB; duplicate checks cover the first 500,000 logical rows. One-time purchase: US $14.99. macOS 14+.

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Hi Product Hunt, I'm Yuichi, the maker of CSV Preflight.

CSV Preflight is a local inspection tool for people preparing CSV imports. It checks encoding, quoting, headers and row structure, with optional column rules for unique keys, required values and length. You can export the findings as CSV.

The focus is a small inspection step before import: files stay on your Mac, and the app does not repair them or guarantee compatibility with every importer. It supports UTF-8 and BOM-marked UTF-16, files up to 256 MB, and duplicate checks on the first 500,000 logical rows.

It runs on macOS 14+, includes English and Japanese, and costs US $14.99 once. I'd welcome feedback on the CSV issues you need to catch before import.

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About CSV Preflight on Product Hunt

“Inspect CSV issues locally before import”

CSV Preflight was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #226 on the daily leaderboard. Check CSV encoding, quoting, headers, rows and column rules on your Mac. Export a CSV report. Scan only; no repairs. Up to 256 MB; duplicate checks cover the first 500,000 logical rows. One-time purchase: US $14.99. macOS 14+.

CSV Preflight was featured in Mac (103.9k followers), Productivity (665.6k followers), Developer Tools (523.1k followers) and GitHub (41.5k followers) on Product Hunt. Together, these topics include over 318.9k products, making this a competitive space to launch in.

Who hunted CSV Preflight?

CSV Preflight was hunted by Yuichi Chiba. 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.