PDF preview
PDF preview displays PDF pages in the preview area, with page navigation, layout options and support for password-protected documents.
Pages and layout
| Action | How |
|---|---|
| Turn pages | Scroll the wheel on the large view |
| Jump to a page | Click the page number below it (for example, 1/3) and type the page |
| Change layout | Switch between Single page, Continuous scroll, and Two-page in the preview area |
| Zoom in / out | Click the matching button on the preview; once zoomed in you can drag to move around |
| Rotate | Rotate left / Rotate right |
The layout buttons tuck away when the window is narrow, but your choice still applies.


Password-protected PDFs
Opening a password-protected PDF puts a password box in the preview area. Type the password, press Enter, and the contents appear.
The password is only remembered for this session — close tessoa and reopen the same file and you will be asked again. tessoa never writes the password to disk.
What the PDF preview cannot do
The PDF preview is for reading. You cannot select text, click links, fill in forms, or edit annotations — those need a dedicated PDF application.
A few PDFs carry no embedded fonts and only reference system font names, so some characters may not show up. The file itself is fine and opens normally in another PDF reader.
PDF preview is included in every paid plan and requires valid paid entitlements covering this feature. If your current license does not cover PDF preview, you can still double-click the file to open it in your system’s default PDF application.