Preview Downloadable PDFs, Documents and Videos With Preview Before Clicking
Chrome: Want to know what’s behind the file you’re about to download? Preview it first with Peek, a simple Chrome extension that works with the most common downloads on the web.
Peek supports PDFs, Word documents, Excel spreadsheets, PowerPoint presentations, HTML5 videos (WebM, MP4, Ogg), Flash video files, and HTML5 audio (MP3, WAV). Just hover your mouse over the link and a preview window will appear. You can also preview in this preview window by scrolling through the PDF pages or playing a video to make sure it is the correct file.
The extension works exactly as advertised and will help you stay safe. Sure, Chrome is isolated to protect you, but it can do little if you download a malicious file to your hard drive. Peek stops this by letting you check first. If you are really paranoid, start it also via VirusTotal online .