JSON File Viewer

Open and view JSON files online. Upload a JSON file to view it as a formatted, collapsible tree. Supports large files. Browser-based — files never sent to servers.

Your data never leaves your browser

JSON Formatter & Beautifier

Format and validate JSON with syntax highlighting online

CSV Viewer & Analyzer

View CSV files as a sortable, searchable table

Excel File Viewer

View Excel XLSX files in your browser

Frequently Asked Questions

What is the file size limit?

Practical limit is ~10MB. Larger files may slow the browser. All processing is local — your file is never uploaded.