WebViewer is a pure client-side JavaScript library to view, annotate and edit documents. It is compatible with any JavaScript framework, including Svelte, by using a DOM element to place the document viewing component. WebViewer has a pre-built Svelte sample specifically designed for integrating into a Svelte project.

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Apryse's fully supported WebViewer is trusted by thousands of innovative startups, governments, and Fortune 500 businesses (see customers). Apryse technology is built from the ground up and is not dependent on any external third-party open-source software.

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• UI source code is included (built in React)
• Create custom annotations
• Change annotation appearance
• Customize annotation behaviour
• Internationalization through JSON language files
• Rich set of APIs for more advanced customization

• PDF, PDF/A
• DOCX, XLSX, PPTX (MS Office software or licenses not required)
• JPG,PNG
• MP4, WEBM, OGG (via WebViewer Video build )

Additional formats available with the optional WebViewer Server and Custom Server setups.

Additional browsers supported with the optional WebViewer Server and Custom Server setups.