A workspace can contain Markdown, PDFs, images, Office files, and other attachments. Open an attachment from the file tree to use its viewer. Documents continue to reference ordinary files through links.
Read files
| Format | Available controls | Current limits |
|---|---|---|
| Continuous reading, thumbnails, page navigation, zoom, fit width | Not a PDF editor | |
| DOC/DOCX | Word system plugin shows pages, paragraphs, tables, and images | Read-only; legacy DOC has limited pagination, section, and header/footer support |
| PPT/PPTX | Presentation system plugin previews source-sized slides, with navigation and zoom | Static preview without animations or media playback |
| XLS/XLSX | Worksheets, displayed cell values, saved formula results, and copying | Read-only on web and hosts without a spreadsheet writer |
Word and presentation system plugins are installed and enabled by default. You can disable them on your device; opening a file then offers an enable prompt. Rendering is local and needs neither an Office installation nor an external conversion service. Missing fonts and complex layouts can differ from Office.
Page and zoom controls live in the preview menu beside the filename. PDF and Word use continuous pages, and each split pane has independent controls. Decrypt password-protected files outside Tano first. Size limits and truncated previews are labeled; a truncated preview is not the complete file.
Edit spreadsheets on desktop
Writable local workspaces support limited XLS/XLSX editing. Double-click a cell or press Enter to enter text. Drag column boundaries to resize, or double-click to fit content. Row and column menus offer copy, clear, and delete. Worksheet tab menus offer rename, duplicate, and delete; you can also add columns or worksheets.
Copy exports tab-separated displayed values. Clear retains formatting and dimensions; delete shifts subsequent content. New input beginning with = is text, not a calculated Excel formula. Existing formulas show results saved in the file.
Workbooks with formulas, defined names, macros, or affected filters may reject structural changes to protect references. Array-formula cells cannot be cleared individually. Rewriting can change complex formatting. Use an Office editor when you need full formula, macro, or layout support.
Saving and recovery
Edits are retained in a device-local draft, and committed cell changes save automatically. Inspect the status icon beside the filename. A failed save retains the draft and offers details and retry. Independent external cell changes can merge; overlapping edits stop the write.
Desktop keeps the original workbook in application data before replacing it. This is not an automatic backup of the whole workspace. Practice on copies and keep an independent backup plan for important files.
Imports and the demo
Desktop workspaces can import attachments; online workspaces need upload permission. The browser demo previews bundled resources and downloads sample attachments but cannot import new ones. Tano data tables use .table.json, a different format from Excel; see Data tables and views.