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CSVTool.io

Free CSV tools that run entirely in your browser

Productivity
Developer Tools
Visit WebsiteSee on Product Hunt

Hunted byPrice ScanPrice Scan

CSVTool.io is a free toolkit of 62 browser-based CSV tools: viewer, editor, validator, dedupe, compare, split, repair with an auditable change trail, and converters to Excel, JSON, SQL and more. Everything runs locally in your browser with web workers - no uploads, no signup, no server. Your files never leave your device, and the viewer opens files too big for Excel.

Top comment

Hi Product Hunt! I built CSVTool.io because every time I needed to quickly look at a CSV, the options were: upload it to a random site, wait for Excel to open, or write a throwaway script. These 62 tools run 100% in the browser - files never leave your device, and there is nothing to sign up for. The repair tool shows exactly what it changed and why, and the viewer opens files that make Excel cry. Would love your feedback on which tool to add next.

Comment highlights

opened a 200mb csv and it actually loaded without crashing my laptop, which already puts it ahead of excel. the dedupe tool caught a few duplicates i would have missed by hand.

About CSVTool.io on Product Hunt

Free CSV tools that run entirely in your browser

CSVTool.io was submitted on Product Hunt and earned 4 upvotes and 2 comments, placing #125 on the daily leaderboard. CSVTool.io is a free toolkit of 62 browser-based CSV tools: viewer, editor, validator, dedupe, compare, split, repair with an auditable change trail, and converters to Excel, JSON, SQL and more. Everything runs locally in your browser with web workers - no uploads, no signup, no server. Your files never leave your device, and the viewer opens files too big for Excel.

CSVTool.io was featured in Productivity (656.6k followers) and Developer Tools (516.2k followers) on Product Hunt. Together, these topics include over 224.2k products, making this a competitive space to launch in.

Who hunted CSVTool.io?

CSVTool.io was hunted by Price Scan. 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 CSVTool.io stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.