Web Guides File Type Support PSPDFKit for Web can be operated as a standalone JavaScript library that runs either entirely on the client or backed by Document Engine. Each operational mode supports different file types. PDF Support Standalone Server-Backed PDF ✓ ✓ PDF/A 1, 2, 3, 4 ✓ ✓ XFDF ✓ ✓ Instant JSON ✓ ✓ Office Document Support Standalone Server-Backed DOCX, DOC, DOTX, DOCM ✓ ✓ PPTX, PPT, PPTM, PPSX ✓ ✓ XLSX, XLS, XLSM ✓ ✓ RTF ✓ ODT ✓ HTML Support Standalone Server-Backed HTML ✓ Image Support Standalone Server-Backed PNG ✓ ✓ JPEG, JPG ✓ ✓ TIFF, TIF ✓ ✓ HEIC ✓ GIF ✓ WEBP ✓ SVG ✓ TGA ✓ EPS ✓ Learn more about the available operational modes.