JSON/CSV Converter
Convert files in 2 seconds.
Drag and drop a JSON or CSV file, get the other format instantly — in your browser, with no server upload. Handles nested JSON flattening, custom delimiters, and large files up to 50MB.
Get your result in under 10 seconds.
No account required
Example output
How It Works
Paste Input
Copy and paste your data into the input field
Get Result
Instant results in under 10 seconds
Share
Copy result or share a direct link
The Problem
Online converters upload files to unknown servers — a privacy risk for any real data
Nested JSON objects require manual transformation that most converters skip
Most converters fail on files over 5MB
What It Does
Client-Side Only
Files never leave your browser. Zero server upload. Zero privacy risk.
Nested JSON Flattening
Dot-notation flattening for nested objects. Configure depth limit.
Custom Delimiters
Comma, semicolon, tab, or pipe — handles all real-world CSV variants.
Large File Support
Web Worker-based processing handles files up to 50MB without freezing.
Share your result
Every result gets a unique shareable link. Show your colleagues.
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Browse all products →Frequently Asked Questions
Is my data uploaded anywhere?
No. All conversion happens in your browser via JavaScript. Nothing is sent to any server.