TumblerFormat support
Find the right compatibility guide and check an edited file.
Current scope
| Format | Available today | Limits |
|---|---|---|
| DOCX | Paginated rendering, text edits, formatting, tables, embedded images, and supported charts. | Incomplete Word layout and feature coverage. Font availability affects pagination. |
| XLSX | Virtualized grid, cell and ordinary formula edits, formatting, tables, and supported charts. | Formula and workbook feature coverage remains incomplete. |
| DOC / XLS / PPT | Not supported. | Convert legacy binary files to DOCX, XLSX, or PPTX first. |
| PPTX | Slide viewing, thumbnail navigation, text and table-cell editing, formatting, and object movement, resizing, and rotation. | Table row/column operations, SmartArt relayout, 3D effects, and full animation/layout fidelity remain unsupported. |
| Source-preserving page merging through the API, CLI, and graphical merge playground. | Unsupported document structures or combinations fail before output; a merged PDF is unencrypted and signatures cannot authenticate the result. |
Support by format
Check a real document
- Keep an unchanged original.
- Open the file in the playground and inspect the content, page edges, and fonts.
- Make a small edit and download the result.
- Reopen the exported file in the application that will consume it.
- Report a minimal, non-confidential example when something differs.
The repository includes package tests and compatibility workflows using LibreOffice and the Open XML SDK. Passing those checks is evidence for the exercised cases, not a guarantee for all Office files.
Local files
The playground reads selected files into browser memory. It does not upload them or save them to a server. Downloads are generated from the current in-memory artifact. Refreshing the page discards edits.
The playground accepts DOCX, XLSX, and PPTX files up to 20 MB. External links in presentations can open in a new tab in View mode; clicking linked text in Edit mode edits the text.