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 and 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 Node.js via Java Features

• Business Signatures - Employ various signature types to sign documents. Place digital signatures precisely on any page location.
• Customizing Signature Appearance - Tailor the visual aspects of signatures by adjusting color, font, borders, rotation, and more to achieve your desired outcome.
• Password-Protected Documents - For many supported document formats, safeguard signed documents with a password for added security.
• Preventing Unauthorized Modifications - Protect crucial business documents signed with digital certificates from unauthorized alterations.
• Desired Output Formats - Effortlessly get signed documents in any supported format. Convert MS Word documents to PDF format with ease.
• Documents Previewing - Save individual document pages as images for future needs.
• Signature Search - Retrieve information about previously added signatures within your documents.
• Document Validation - Verify the authenticity of signatures presented in any document.
• Signature Management - Delete, relocate, or modify any signatures placed on any document page.