Viewing files online without downloading

Many file types can be previewed directly on the HeftySend download page without saving anything to your device.

How it works

When you open a HeftySend download page, supported files show a preview option. Click the file name or thumbnail to open it in the inline viewer. The viewer loads inside the page and lets you see the content immediately.

Previewing does not count as downloading. The file is displayed in your browser but not saved to your device unless you explicitly download it afterwards.

Supported file types

Type Formats
Images JPEG, PNG, GIF, WebP, SVG
Video MP4, WebM, MOV
Audio MP3, WAV, OGG, FLAC
Documents PDF

When previewing is useful

Inline previewing is handy when:

  • You want to quickly check a file before deciding whether to download it
  • You are on a mobile device and just want to view an image or video
  • You need to review a PDF document without opening a separate app

For anything outside the supported formats, use the regular download button to save the file and open it in an appropriate app. For a full overview of what the download page includes, see How the download page works.

Last updated on March 10, 2026