File preview

Certain file formats show a preview directly within the platform so you can view them without the need to download them. Files that don't show a preview need to be downloaded so you can view them locally on your device.

Supported file formats

The following file formats generate a preview:

Supported image formats Supported document formats Supported video formats
  • jpg
  • gif
  • png
  • tiff
  • x-png
  • x-icon
  • docx (not if comments)
  • odt
  • pdf
  • pptx
  • txt
  • xlsx
  • mp4

Additionally, please keep the following in mind:

  • Images:
    • Haiilo doesn't compress images but instead uses their original resolution. However, certain widgets may scale images, and thumbnails are also resized. Therefore, images may appear distorted when squeezed into an element.
    • When uploading multiple images to a timeline post, the order in which the images are displayed is random. One image will be displayed dominantly and the rest as smaller previews. If more than 9 images are uploaded, a plus symbol appears so users can view the rest of the images in the file preview.
  • Documents: The preview images for documents are generated by the documents themselves, and Haiilo has no influence over the preview. Usually, the initial page of the file is displayed.
  • Videos: Videos are played in Haiilo using the browser's "video" tag. This means that the browser is responsible for decoding the video and audio with the codecs installed. Haiilo has no influence on the installed codecs on the end devices. Videos uploaded to Haiilo are played in their original format and are not converted. We recommend producing videos in such a way that the used codecs are covered by the largest possible number of end devices.

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