Free online file viewer and editor: open any file, upload nothing

• 4

  File types you can open today

  CSV, Excel, JSON and plain text.

• 9

  Extensions supported

  .csv .tsv .tab .txt .json .xlsx .xls .xlsm .ods

• 0

  Bytes uploaded

  Your browser reads the file. There's no server to send it to.

Keyboard first

Pick a format to see its shortcuts.

Supported formats

Grouped by what you do with them.

• JSON formatter
• JSON validator
• TSV viewer
• Large CSV file viewer
• XLS viewer
• Excel to CSV
• CSV to Excel
• Excel to JSON
• CSV to JSON
• JSON to CSV
• Mask sensitive data

Your files stay on your device.

Most online viewers upload your file to a server, so a copy of it leaves your device. OpenAnyDoc works the other way round: your browser reads the file and draws it on your screen. Nothing is uploaded, there is no account, and the file is gone from memory when you close the tab, so there is nothing for us to store, see or lose.

Frequently asked questions

Is OpenAnyDoc really free?

Yes. Opening, viewing, editing and downloading your files is free, with no account and no sign-up.

Is it safe to open my files online? Are they uploaded?

Your files are not uploaded. Your browser reads the file and shows it on your screen, so it never leaves your device and there is nothing for us to store, see or lose.

Which file types can I open?

CSV and tab-separated tables (.csv, .tsv, .tab), plain text (.txt), JSON (.json) and Excel (.xlsx, .xls, .xlsm, .ods). Word (.docx), PDF (.pdf) and PowerPoint (.pptx) are on the way.

Can I edit my file and save the changes?

Yes, for CSV, TXT, JSON and Excel files: make your changes, with undo and redo, and download a copy in the same format. The file on your device is never changed and edits are not kept anywhere else, so download before you leave. Excel files keep formulas, number formats and merged cells; charts, images and macros are not kept.

How big can a file be?

There is no fixed limit for CSV, TXT and Excel; it depends on your browser's memory. Files over 50 MB show a warning, and OpenAnyDoc still tries to open them. JSON files are the exception: they open up to 10 MB. A 120,000-row CSV file opens in under a second, and a 46 MB text file has been tested.

Does it handle Arabic and other Unicode text?

Yes. UTF-8 (with or without a BOM) and UTF-16 files are read directly, and a file that is not valid UTF-8 is read as Windows-1256. Arabic cells display right-to-left.

Does it work on my phone?

Yes. Every viewer works in a phone browser: the CSV, JSON and TXT pages have their own phone layouts, and the Excel page adapts to a small screen. Big sheets are easier on a larger screen.

Do I need to install anything or create an account?

No. OpenAnyDoc runs in your browser, with no install and no account.