Open an XLSX Without Excel

Quickly peek inside a spreadsheet without buying Excel or uploading to Google Sheets.

Nid oes angen mewngofnodiMae ffeiliau'n aros yn breifat

Gollwng ffeiliau yma, neu cliciwch i bori

XLSX, XLS, CSV, ODS dim cyfyngiad maint ffeil

Pori ffeiliau

Nid yw eich ffeiliau byth yn gadael eich dyfais. Mae'r holl brosesu yn digwydd yn lleol yn eich porwr.

Open .xlsx, .xls, .csv, or .ods spreadsheets without Excel or Google Sheets. The file is parsed entirely in your browser.

spreadsheets tips

👀

Drop an .xlsx, .xls, .csv, or .ods file to view its contents instantly in a table.

🗂️

Multi-sheet workbooks show tabs — click to switch between worksheets.

🔒

The file is parsed in your browser, so you can safely open a spreadsheet from email without uploading it anywhere.

↔️

Need the data elsewhere? Export the active sheet to CSV or JSON.

Dewiswch Ffeil

Drop your file into the tool above. It stays entirely on your device — nothing is sent to any server.

Proses

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

Lawrlwythwch

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

✓Hollol rhad ac am ddim - dim costau cudd, byth

✓Nid oes angen cyfrif, e-bost na mewngofnodi

✓Nid yw ffeiliau byth yn gadael eich dyfais

✓Dim cyfyngiadau maint ffeil o gwbl

✓Dim dyfrnodau ar unrhyw allbwn

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