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High-Performance Libraries for Building Desktop and Web File Viewer Applications

Enhance your application with advanced capabilities for viewing and processing documents

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Document & File Viewing Solution

Conholdate.Total offers high-performance and cross-platform libraries that allows developers to build desktop and web file viewer applications. With its powerful and straightforward API, developers can view documents in various file formats, load documents from different sources, and implement advanced processing features such as extracting text from PDF files and images, rotating pages, and adding watermarks.


View Wide Range of File & Document Formats

Render documents in various popular file formats such as DOCX, XLSX, PPTX, PDF, DWG, PSD, HTML, ZIP, and more, with the ability to convert them into HTML, PDF, PNG, and JPEG formats for easy viewing and sharing.

Output Transformation Options

Output transformation options include a variety of features to enhance the presentation of documents, such as page rotation, watermarking with customizable options, and page reordering to improve the flow of information.

Process Attachments Embedded in Documents being Viewed

Effortlessly process all types of document attachments, including email attachments, embedded files, and compressed files, to extract and save them separately.

Accelerate Document Viewing with Caching

Conholdate.Total provides a caching mechanism for time-consuming document conversion operations. This means that the converted document is stored in the cache (e.g. on the local drive) and can be retrieved from there in case of repetitive conversions of the same document.

Microsoft Office Automation Not Needed for Office Formats

Conholdate.Total is built using managed code that never needs Microsoft Office to be installed on the machine to work with supported document formats. It is a perfect Microsoft Office automation alternative in terms of supported features, security, stability, scalability, speed and price.


Do you have a demo that I can quickly try?

Certainly! You can easily try out the document rendering without writing any code by visiting our Document Viewer page.

What file formats does Viewer support?

Conholdate.Total Viewer supports ivarious file formats including archive and compression formats (7Z, BZ2, GZ, RAR, TAR, TGZ, TXZ, XZ, ZIP), CAD and 3D formats (CF2, DGN, DWF, DWG, DWT, DXF, HPG, IFC, IGS, OBJ, PLT, STL), database formats (NSF), eBook formats (EPUB, MOBI, AZW3), email formats (EML, EMLX, MBOX, MSG, VCARD/VCF), image formats (AI, BMP, CDR, CGM, CMX, DCM, DIB, DJVU, DNG, EMF, EMZ, EPS, FODG, GIF, ICO, J2C, J2K, JP2, JPC, JPEG/JPG, JPF, JPM, JPX, JLS, ODG, OTG, PCL, PNG, PS, PSB, PSD, SVG, SVGZ, TGA, TIFF, VSD, WMF), Microsoft Office formats (DOC, DOCX, DOCM, DOT, DOTM, DOTX, ODT, RTF, TXT, XLS, XLSX, XLSM, XLT, XLTM, XLTX), PDF and other document formats (EP, KEY, NUMBERS, ODP, PAGES, PDF, POT, POTM, POTX, PPS, PPSM, PPSX, PPT, PPTM, PPTX, PUB, VDX, VSDX, VSS, VSSX, VST, VSTM, VSTX, XPS).

Can I convert files without other third-party applications like Microsoft Office or Adobe Acrobat?

Yes, Conholdate.Total Viewer allows you to render files without the need for additional third-party applications.

Support and Learning Resources

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