Client-SideNew

Word & Excel Editor

Open, edit, format, and download Word (.docx) and Excel (.xlsx, .csv) documents directly in your browser.

100% Client-Side & Private (Files never leave your browser)
document.docx
Words:41Characters:229Pages:~1Reading:~1 dk
document.docx

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WebAssembly & RAM
Near-native speed without remote network latency.
Zero Server Upload
Your data never leaves your personal device.
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Tools keep running even if your connection drops.

How to Edit Word and Excel Files Online?

1
Step 1

Select Word Document or Excel Spreadsheet mode from the top tab switcher.

2
Step 2

Upload an existing file (.docx, .xlsx, .csv) or pick one of our professional pre-made templates.

3
Step 3

Use the rich text toolbar for styling documents in Word mode, or use the formula bar and grid tools in Excel mode.

4
Step 4

When finished, export your work in DOCX, XLSX, PDF, CSV, or JSON format with a single click.

Online Office Studio FAQ

Are my files uploaded to a remote server?

No. All Word (.docx) and Excel (.xlsx, .csv) parsing, editing, formula computation, and file generation occur entirely inside your browser (client-side). Your data remains 100% confidential and secure.

Which file formats are supported?

Word mode supports DOCX, DOC, RTF, HTML, TXT, and Markdown; Excel mode supports XLSX, XLS, CSV, and TSV. You can export to DOCX, XLSX, PDF, CSV, JSON, or clean HTML.