Excel Compare is a secure, local-first utility to compare two large spreadsheet files (.xlsx or .xls) side-by-side. Choose specific columns, select positional or key column row matching, and export colored diffs instantly in your browser.
Compare two Excel sheets in three easy steps
Drag and drop your spreadsheet files (.xlsx or .xls) into the dropzones. They are loaded and parsed locally.
Toggle specific columns to include or ignore. Choose between positional (row-by-row) or key-based column matching.
Review highlighted modifications instantly, filter out unchanged rows, and download a color-coded Excel diff.
Supports workbooks with multiple sheets. Swap sheets independently to compare specific tabs.
Ignore insignificant metadata columns (like updatedAt) and focus only on the fields you want.
Identify added/deleted rows automatically by matching against unique keys (like user ID or SKU).
Uses high-performance Web Workers to parse files locally. Sensitive details never leave your browser.
No. Like all tools on JSON Workbench, all spreadsheet parsing, diffing, and formatting run locally in your web browser. Zero bytes are uploaded.
We support Excel spreadsheet files with .xlsx and .xls extensions.
Yes. While standard tools crash or freeze when parsing large sheets, this tool is powered by background Web Workers, allowing you to parse and compare large Excel files up to 50MB smoothly without locking up your browser.
To get the most accurate differences when comparing Excel files:
Compare two large Excel sheets side-by-side, filter by columns, and match rows by key — up to 20MB files supported.
Upload File A
Drag & drop Excel (.xlsx, .xls) here or click to browse
Upload File B
Drag & drop Excel (.xlsx, .xls) here or click to browse