Merge Excel Files Without an IT Ticket
For monthly-reporting analysts on locked-down corporate laptops: drop a folder of XLSX workbooks, preview how their column headers align across the batch, and download one consolidated file. No install, no upload, no admin approval. Free, browser-only, runs behind any corporate firewall.
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Your files never leave your browser — guaranteed.
This tool runs 100% in your browser using JavaScript. No filenames, no row contents, nothing about your spreadsheets is transmitted to any server. Disconnect from the internet — it still works.
Drop your Excel files here, or click to choose
Accepts .xlsx and .xlsm — drop a whole folder if your browser supports it.
How it works
What does "header alignment" mean?
When you drop multiple files, the tool collects every column header across the batch and shows you which ones appear in all files versus only some. This way you see mismatches (e.g. Total $ vs. Total Sales) before merging produces garbage.
Which sheet is merged?
v1 reads the first sheet of each workbook. Multi-sheet merging is on the roadmap.
What about formulas and formatting?
Cell values are preserved. Formulas are evaluated to their last cached values; rich-text formatting, fonts, and colours are dropped. The output is a clean data sheet, not a formatted report.
How big can the batch be?
You'll see a warning above ~500 MB of total input. The hard limit is your browser's memory — modern browsers handle hundreds of MB comfortably.
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