⚡ CLIENT-SIDE · ZERO AI COST · 100% PRIVATE
File Format Converter
Convert data tables instantly between popular file formats. Supports JSON, CSV, YAML, XML, and Excel spreadsheets. Zero network transmissions.
Instructions: Upload a file or paste raw data, select input and target formats, adjust XML element properties if relevant, and convert.
📋 JSON📊 CSV📝 YAML🗂️ XML📗 Excel
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Your converted data will appear here
Select source and target formats on the left, paste your input, and run conversion.
📋 JSON to CSV
Turn nested JSON arrays of objects into clean comma-separated tables instantly.
📗 CSV to Excel
Convert data lists into Microsoft Excel sheet workbooks ready for download.
📝 YAML & XML
Supports full markup conversions to and from YAML config lists and XML tags.
01
Upload File or Paste
Drag files or paste data strings (JSON, CSV, XML, YAML) onto the workspace.
02
Choose Formats
Select from and to formats. The tool will auto-detect input types in uploaded files.
03
Instant Export
Download converted outputs in one click. All operations are local and secure.
Why Use File Format Converter?
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Pure Client-Side: No data values are ever uploaded to backend servers, preventing privacy leaks.
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Zero Coding Scripting: Move datasets from Excel sheets to JSON config files without Python scripts.
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XML Schema Customization: Set custom root elements and row tags when generating XML outputs.
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Instant Response: Since it uses no network hops, processing executes in milliseconds.
Frequently Asked Questions
Is there a file size limit?
The converter comfortably processes files up to 10MB directly within your browser window.
Do you store any files I upload?
No. All conversions execute locally within your browser sandbox. No bytes are sent online.
How does it handle nested JSON to CSV?
It flattens object columns using dot notation, making nested values readable inside spreadsheet tools.