Peek

Download extension

Preview documents, videos, music, and more with a mouse hover.Peek is a browser extension that lets you preview dozens of types of documents before you download them. Just hover over a file's link, and Peek will display an interactive preview of the file instantly.

Supported file types:
- PDF, TXT, RTF documents
- Word Documents (.doc, .docx)
- Excel Documents (.xls, .xlsx)
-PowerPoint Presentations (.ppt, .pptx)
- OpenDocument files (.odt, .ods, .odp)
- WebM, MP4, GIFV, and OGG/OGV Video
- MP3 and WAV Audio
- JPEG, PNG, GIF, SVG, PNG, APNG, ICO, and BMP images

Supported websites:
- Google Docs
- Apple iCloud (Keynote only)
- YouTube
- Reddit (posts only)

Peek is open source under the GPL license. The code is available here:
https://github.com/corbindavenport/peek

Peek has a donation option in the settings page, if you wish to support the project's development.