Supported File Formats

Microsoft Office formats

• Word: DOCX, DOC, DOCM, DOT, DOTX, DOTM, RTF
• Excel: XLSX, XLS, XLSM, XLSB, XLTM, XLT, XLTM, XLTX, XLAM, SXC, SpreadsheetML
• PowerPoint: PPT, PPTX, PPS, PPSX, PPSM, POT, POTM, POTX, PPTM

Images & Other Formats

• Portable: PDF
• Images: JPG, BMP, PNG, TIFF, GIF, DICOM, WEBP
• Other office formats: ODT, OTT, OTS, ODS, ODP, OTP, ODG

Other formats

• Web: HTML, MHTML
• Archives: ZIP, TAR, 7Z
• Certificates: PFX

GroupDocs.Signature for Java Features

• Adding Signatures - Sign a document using various supported signature types by placing a digital signature precisely at any position on any page.
• Customizing results - Customize the signature appearance by adjusting color, font, border, rotation, and other features to achieve the desired result.
• Securing documents with password - For many supported document types, you can protect the signed document with a password.
• Preventing unauthorized changes - Protect important business documents signed with a digital certificate from unauthorized modifications.
• Obtaining results in desired formats - Easily obtain signed result files in any supported format. You can also convert MS Word documents to PDF effortlessly.
• Document preview - Save any page of a document as an image for future processing.
• Searching for signatures - It is possible to get information about previously added signatures in specific documents.
• Validating documents - Validate the correctness of signatures on any signed document.
• Managing signatures - Once a signature is placed on a document page, it can be deleted, moved, or updated as needed.