Supported file formats

Microsoft Office formats

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

Images & Other Formats

• Portable: PDF
• Images: SVG, TIFF
• Other office formats: ODT, OTT, OTS, ODS, ODP, OTP

Other formats

• Web: HTML, MHTML
• Emails: EML, MSG, EMLX
• Other: EPUB, MD

GroupDocs.Assembly Key Features

• Dynamic Data Representation - Render tables, charts, images, and lists within your document templates using structured or semi-structured data.
• Formula-Based Data Processing - Use expressions and sequential logic to calculate and format content before rendering.
• Multi-Format Template and Output Support - Work with DOCX, XLSX, PPTX, PDF, HTML, and other formats for templates and output files.
• Advanced Template Markup - Take advantage of powerful syntax options including custom counters, number formats, and conditional blocks.
• Barcode Generation - Create barcodes dynamically and embed them directly into generated reports or documents.
• String and Case Formatting - Control output styling with flexible string formatting: upper, lower, title case, or first-letter capitalization.
• Smart Content Insertion - Merge sections from other documents dynamically, supporting modular document composition.
• Multi-Format Document Output - Export documents to desired formats using file extensions or custom output configurations.
• Base64 & Embedded Object Support - Insert images, files, or data blobs directly from Base64-encoded strings or byte arrays.