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Find spreadsheet changes in minutes

Add your files, choose which columns identify each row, then run — all in one place.

Your files stay on this device. If you paste a Google Sheets link, we load only that sheet from Google and compare it here in your browser.

How it works

FAQ

What are you doing?

Data

File A is your first upload. File B is the file you compare it to.

Start with File A

Upload your first file below. Add a second file to compare two files, or use one Excel workbook with two sheets.

File A
First list — required

Drop your file here

Excel (.xlsx, .xls) or CSV — or click to browse

Import from Google Sheets
Paste a public sheet link. We load it only in your browser.
Need a specific tab?

Open the tab you want in Google Sheets, then paste that full URL above. You can also paste just the digits after #gid=.

Loaded in your browser only. We do not store a copy.

File B
Second list — optional

Drop your file here

Excel (.xlsx, .xls) or CSV — or click to browse

Import from Google Sheets
Paste a public sheet link. We load it only in your browser.
Need a specific tab?

Open the tab you want in Google Sheets, then paste that full URL above. You can also paste just the digits after #gid=.

Loaded in your browser only. We do not store a copy.

Get started
Fastest: drop files in the zones above, or scroll down to paste. Try demo anytime.

Paste your data

CSV or spreadsheet paste below

Upload CSV

Or Excel in the drop zones

Try Demo

See a full comparison now

Paste spreadsheet text
Put column names in the first row. Paste from Excel or Google Sheets if you like. We detect columns automatically; then you choose which columns identify each row under Match & rules.

Match & rules

Choose which columns identify the same row in both files (order matters when names differ).

Add File A (paste data or Google Sheets) in the Data section above. Then choose matching columns and options here.

Check & run

Pick Compare two lists or Find duplicates in one list at the top. Then finish matching columns under Match & rules.