All file types StartSync accepts for upload, and how the built-in converter works.
StartSync accepts the following file formats for presentation upload (both from the dashboard and via self-upload links):
The most common presentation format. Opens in Microsoft PowerPoint or WPS Office on the room laptop. This is the recommended format for best compatibility.
Documents and presentations in portable format. Opens in Adobe Reader, Preview (Mac), or any PDF viewer.
Text documents. Can be auto-converted to PowerPoint (.pptx) using the built-in converter.
Apple Keynote presentations. Can be auto-converted to PowerPoint. Best results with Keynote 11 or later.
Spreadsheets and data tables. Opens in Excel or Google Sheets on the room laptop.
Plain text files and web-based presentations.
JPG, JPEG, PNG, GIF, BMP, SVG, WebP, TIFF. Useful for poster sessions, diagrams, or photo-based content.
MP4, MOV, AVI, WMV, MKV, WebM. Downloads to the room laptop and opens in the default video player.
MP3, WAV, AAC, OGG, M4A. For audio-based presentations or background music during sessions.
ZIP, RAR, 7Z. Upload bundled files (e.g. presentation + videos + fonts in one package).
PPT (legacy PowerPoint), ODP (OpenDocument Presentation), DOC, ODT, RTF, XLS, CSV. All standard office formats are supported.
StartSync can automatically convert the following formats to PowerPoint (.pptx):
Conversion happens directly in the platform. The resulting .pptx file downloads to the room laptop automatically through the agent, just like any other presentation.
Known limitations: Complex PDF fonts, very old Keynote files (v09 or earlier), password-protected files, and documents with advanced multi-column layouts may not convert perfectly. In these cases, ask the speaker to export to .pptx from their original application, or use the file in its original format (PDF opens fine in Adobe Reader).