Supported Document Formats Leave feedback

The following table indicates the file formats that GroupDocs.Signature can work with.

Format	Description	Barcode	Digital	FormField	Image	Metadata	QR-code	Stamp	Text
APNG	Animated Portable Network Graphics (APNG)
BMP	Bitmap Picture (BMP)
CDR	CorelDraw Vector Graphic Drawing (CDR)
CMX	Corel Metafile eXchange Image
DCM	Digital Imaging and Communications in Medicine (DICOM)
GIF	Graphics Interchange Format (GIF)
JPG, JPEG	Joint Photographic Experts Group (JPEG)
PNG	Portable Network Graphics (PNG)
SVG	Scalable Vector Graphics (SVG)
TGA	Truevision Graphics Adapter (TGA)
TIF, TIFF	Tagged Image File Format (TIFF)
WEBP	WebP Image
WMF	Windows Metafile (WMF)
PDF	Adobe Portable Document Format (PDF)
ODP	OpenDocument Presentation
OTP	OpenDocument Presentation Template
POTM	Microsoft PowerPoint Macro-Enabled Template
POTX	Microsoft PowerPoint Template
PPS	Microsoft PowerPoint 97-2003 Slide Show
PPSM	Microsoft PowerPoint Macro-Enabled Slide Show
PPSX	Microsoft PowerPoint Slide Show
PPT	Microsoft PowerPoint 97-2003 Presentation
PPTM	Microsoft PowerPoint Macro-Enabled Presentation
PPTX	Microsoft PowerPoint Presentation
ODS	OpenDocument Spreadsheet
OTS	OpenDocument Spreadsheet Template
XLSX	Microsoft Excel Worksheet
XLS	Microsoft Excel 97-2003 Worksheet
XLSB	Microsoft Excel Binary Worksheet
XLSM	Microsoft Excel Macro-Enabled Worksheet
XLT	Microsoft Excel 97-2003 Template
XLTX	Microsoft Excel template
XLTM	Microsoft Excel macro-enabled template
DOC	Microsoft Word 97-2003 Document
DOCM	Microsoft Word Macro-Enabled Document
DOCX	Microsoft Word Document
DOT	Microsoft Word 97-2003 Template
DOTM	Microsoft Word Macro-Enabled Template
DOTX	Microsoft Word Template
ODT	OpenDocument Text
OTT	OpenDocument Text Template
RTF	Rich Text Format (RTF)
AZW3	Amazon Kindle Format 8 eBook (AZW3)

Notes:

• Form-field signatures (FormFieldSignOptions) work in PDF only.
• For PNG and JPG/JPEG, Digital means an image digital signature hidden in the pixels and protected with a password (ImageDigitalSignOptions); certificate signatures are not supported for images.
• CSV is signed only when the file type is set: new LoadOptions(FileType.CSV).
• SVG and WMF are saved as PNG after signing, and CMX as TIFF. A signed XLT is saved with XLSX content under the .xlt name (known issue).
• CDR signing fails in version 26.9 (known issue). DJVU and PSD are no longer supported.
• PFX certificate files can be opened only to verify or search them.