In-Browser Conversion Bridge
Convert XLSX to JSON
Fast, client-side conversion from .xlsx to .json. No server uploads, no privacy compromises.
Zero server uploads
Pure client-side execution
exact Fidelity
Drop files here, or click to browse
PDF, DOCX, XLSX, PPTX, JPG, PNG, MP3, MP4, EPUB, ZIP and 100+ more
Fidelity Note (exact):Values only; formulas, charts, macros, and formatting are not exported.
Format Comparison: XLSX vs JSON
| Property | XLSX | JSON |
|---|---|---|
| Category | spreadsheet | data |
| File Extension | .xlsx | .json |
| MIME Type | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | application/json |
| Common Apps | Microsoft Excel, Google Sheets | Any text editor, web browser, Postman, VS Code |
| Best For | Financial modeling, business analytics, multi-tab accounting, and charting. | Web APIs, microservice data exchange, and config files. |
How to Convert XLSX to JSON
1
Select Files
Drop or browse your XLSX files into the widget.
2
Verify Settings
Target format JSON is locked. Customize options if desired.
3
Instant Download
Conversion completes locally in browser memory for instant download.
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Frequently Asked Questions
Fileora converts XLSX (XLSX) directly inside your web browser using WebAssembly. Drop your XLSX file into the converter box above, confirm JSON as the output, and click Convert. Your file data stays in local memory on your device.