Limitations

PDF

• JPEG 2000 and JBIG2 images are shown as placeholders.
• Fonts that are not embedded are drawn with a built-in sans-serif, scaled to the original widths.
• Saving writes an unencrypted file; encrypted or repaired files are always saved in full.
• Not yet: filling interactive form fields (they are kept and drawn), true content redaction, and cryptographic digital signatures.

Word

• Shapes, charts and text boxes are shown but not edited (shapes can be moved and resized).
• Table styles cannot be picked from a gallery yet.
• WordArt effects, 3-D charts, shadows and glow are drawn flat; charts linked to external data show only their frame.

Excel

• Not drawn yet: sparklines, the layout of pivot tables (their cells show), outline buttons and form controls. Charts show the values stored in the file.
• Functions beyond the 170 supported keep the result stored in the file; links to other workbooks too.
• Filter buttons filter by values; text, number, date and colour filters from a file are kept but not applied.
• .xlsb workbooks: pictures, charts, notes and rules are not read yet.