How do I compare two Excel files online?

Export each sheet to CSV first, then drop the CSV files into this page. The grid highlights cells that do not match. Binary .xlsx workbooks are not opened directly.

Can I compare XLSX files directly?

No. This page reads delimited text such as CSV. Save the Excel workbook as CSV, or copy the sheet values into a CSV file, then compare.

Does it detect added and deleted rows?

Yes. Rows that exist only on the right are counted as added; rows only on the left are counted as deleted. Matching row positions are compared cell by cell.

Is spreadsheet data sent to a server?

Parsing and highlighting run locally in your browser.

CSV をオンライン比較

Row	ID	Product	Category	Price	Stock	Status
1	101	MacBook Pro M3MacBook Pro M3 Pro	Laptops	19992199	4538	Active
2	102	Dell XPS 15	Laptops	17991699	3025	Active
3	103	iPad Air 11iPad Air 11 M2	Tablets	599	8095	Active
4	104	Sony WH-1000XM5	Audio	399349	12085	ActivePromo
5	105106	Logitech MX Master 3SApple Magic Keyboard	Accessories	99149	20060	ActiveNew

How CSV compare works

Compare Text parses each CSV into a grid, aligns rows, and flags cells whose values changed. Added and deleted rows are counted separately so inventory feeds, price lists, and CRM exports stay auditable.

別の形式が必要ですか？ compare text online または compare PDF files も compare-text.online 内で利用できます。

チームが使う理由

Cell-level highlighting for changed values
Counts for modified cells, added rows, and deleted rows
CSV upload with instant grid preview
Works in the browser — no desktop spreadsheet required
Pairs with Text Compare for formula-as-text reviews

このツールの使い方

1
Export sheets to CSV
In Excel or Google Sheets, save each sheet as CSV (or upload CSV you already have) so the browser can parse a clean grid. Binary .xlsx is not opened directly.
2
Upload both CSV versions
Drop original and modified files, then review highlighted cells and row counts.
3
Investigate mismatches
Focus on modified cells first, then confirm added and deleted rows for migration safety.

CSV diff for ops and finance

Price lists, inventory feeds, CRM dumps, and budget snapshots change constantly. Comparing CSV online surfaces the exact cells that moved without a desktop license or fragile VLOOKUP worksheets. When your source is Excel, export each sheet to CSV before uploading.

csv ファイルをオンライン比較の主な用途

Price lists and inventory

See which SKUs changed price, stock, or status between monthly CSV exports.

CRM and operations dumps

Diff CSV exports from Salesforce, Sheets, or a warehouse to confirm a migration did not drop rows.

Budget and forecast versions

Review two planning snapshots exported as CSV and isolate the cells finance actually edited.

CSV ファイルをオンライン比較 FAQ

How do I compare two Excel files online?: Export each sheet to CSV first, then drop the CSV files into this page. The grid highlights cells that do not match. Binary .xlsx workbooks are not opened directly.
Can I compare XLSX files directly?: No. This page reads delimited text such as CSV. Save the Excel workbook as CSV, or copy the sheet values into a CSV file, then compare.
Does it detect added and deleted rows?: Yes. Rows that exist only on the right are counted as added; rows only on the left are counted as deleted. Matching row positions are compared cell by cell.
Is spreadsheet data sent to a server?: Parsing and highlighting run locally in your browser.

Spreadsheet & CSV Diff

CSV ファイルをオンライン比較