Supported formats - doXmind

Stable document types

Format	Open	Edit	Save behavior
`.md`, `.markdown`	Yes	Yes	Updates the Markdown source and sidecar
`.pdf`	Yes	Annotations; existing text when extractable	Saves edits to a sidecar; export creates a new PDF
`.xlsx`	Yes	Yes	Saves edits to a sidecar; export creates a new workbook

Limited support

Format	Current behavior
`.xlsm`	Opens in the workbook editor, but VBA preservation is not guaranteed on export

Not currently supported

.docx and .pptx are not supported workspace documents.
CSV support is under development and is not part of the stable release. Convert CSV files to .xlsx before opening them.
Scanned PDFs can be displayed, but doXmind has no OCR for extracting editable text.

Size limits

The local file import limit is 10 MiB. Workbook parsing is also limited to 64 worksheets, 5,000 rows per sheet, and 200 columns per sheet. Split very large inputs before opening them when possible.

Compatibility notes

The spreadsheet formula engine is not a complete Excel implementation. Review complex formulas after export.
Structural spreadsheet edits may require manual formula updates.
Rich Markdown details without a direct portable equivalent depend on the hidden sidecar.

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