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A fast way to clean and convert messy CSV/JSON files in the browser

A fast way to clean and convert messy CSV/JSON files in the browser

by sumit_entr42·Feb 24, 2026·1 point·0 comments
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AI Analysis

●●SolidSolve My ProblemShip It

Catches silent data failures (schema drift, type mismatches) before pipelines break.

Strengths
  • •Addresses a real friction point: data issues discovered too late, after they cascade
  • •Client-side processing means zero trust friction for sensitive data
  • •Visual inspection UI beats jumping between Excel, scripts, and random tools
Weaknesses
  • •No enforcement or remediation—inspection-only approach limits workflow completeness
  • •Competitive landscape includes pandas validation libraries, Soda, Great Expectations for rigorous checks
Target Audience

Data engineers, backend developers, data analysts working with structured files

Similar To

Great Expectations · Soda · Dataedo

Post Description

Hey HN,

I often work with CSV and JSON files that are a bit messy - duplicates, inconsistent formatting, or just hard to inspect.

I usually end up jumping between Excel, scripts, and random online tools.

So I started building a small browser-based tool to make this easier.

Right now it lets you:

- Convert between JSON, CSV, Excel formats

- Remove duplicates quickly

- Filter and reshape data visually

- Inspect basic issues in the file

and few more.

Everything runs in the browser - no uploads to a server.

It’s still early, but I’d love to know your experience and thoughts about the product.

Maybe I am missing something or thinking wrong, your response will really matter. So looking forward for your feedback.

I would like to ask:

- what is that thing in your data workflows or data tasks, that feels like slowing you or like giving a sharp pain regularly?

Link: https://www.datumintapp.com/

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