The release of Safari 5 brought about a new extension system that allows developers to create and distribute helpful and fun tools similar to those found in Firefox.

Since Apple’s own Safari extension list hasn’t yet gone public, we’ve compiled a list of 30 of our favorite extensions for you to download and try. We’ll also walk you through the process of how to install extensions in Safari, so everything is clear and simple!

Installing Extensions

To install an extension after you download it, simply double click it. Next go under “Develop” in the Safari menu bar and select “Enable Extensions.”

After doing this, you should have an extensions tab in under Preferences in Safari.

“Add the Lasso to your Safari toolbar and collect images, videos, documents and links from all over the web.”

“The LittleSnapper Safari extension includes all the functionality of our new bookmarklet, as well as the ability to add a ‘Snap’ button to the Safari address field.”

“Post direct-to-twitter from Safari. Auto-fills with the current site. Auto-shortens long urls.”

“VSS — is a Safari extension to view style sheets of current site with one-click.”

“User CSS is a Safari 5 extension that will easily enable you to override stylesheets for any web page for anything—from changing fonts, colors to hiding ads and more! Personalizing now.”

“Check how many unread emails there are in your GMail Inbox… Directly from a nice button in the toolbar.”

Split View Extension

“You can Split the current Window horizontally or Vertically, just like you need it.”

Resizer Safari Extension

“Resizer adds a single button to your Safari toolbar that will resize the current browser window. The extension has 10 user configurable window settings (that can be named and enabled/disabled) and clicking the toolbar button will cycle through them in order. You can also select any of your enabled settings directly from the contextual menu.”

Safari Extension: Share with Facebook

“Adds one-click sharing to Safari’s toolbar.”

Snapper – Simple Snapping Safari Extension

“Here is a basic Safari extension which snaps the current page as a PNG!”


“Helvetify is an extension that basically sets the web page’s font to, yes, Helvetica (Neue to be exact.)”

Linked Images

“This extension searches through the current page for links to images, then embeds the actual image in place of the link.”


“This extension adds a button into the toolbar that you can click to bring up a list of usernames and passwords for the current page, provided by This is great for bypassing free but compulsory registration on sites like The New York Times and The Washington Post.”

Instapaper Beyond

“Instapaper Beyond is officially available as a Safari 5 extension! For Safari users new to Instapaper Beyond, it’s an extension which adds full keyboard navigation and Ajax loading to Instapaper.”

YouTube5 – HTML5 Converter for YouTube videos

“This extension removes the need to use flash on YouTube by converting all videos to their HTML5 video tag equivalents. It also has the added benefits of decreased CPU usage compared to flash, and the removal of in-video ads.”

“NoMoreiTunes is an extension for Safari 5 which disables the script that tries to start iTunes when you visit a link to the iTunes Store. It’s annoying and redundant as there is iTunes Preview for Music and Apps now.”


“This extension fills a gaping hole in Safari’s functionality—it saves all open tabs in the current browser window and allows you to reopen them whenever you want, even across restarts of the browser.”

Safari 5 Mouse Gestures

“This is a very simple Safari 5 extensions which adds basic mouse gestures to navigate or open/close tabs and windows.”

GMail This

“Gmail This send current webpage and title via Gmail.”


“Very simple extension that displays current time and date and also minutes on current browser session in a toolbar … just there for knowing how long you’ve wasted away looking at the web.”


“Allows you to easily send the selected text to one of up to 8 customizable search engines, right from the toolbar and/or contextual menu.”


“Adds a weather button to the toolbar.”


“On the Ars Technica forums someone mentioned that they’d like to be able to switch between tabs using command + numbers to choose tabs. I took a look at the Safari extension system, and while you can’t override the shortcuts bound to cmd 1-91 due to security restrictions, control is available. An hour or so later and ctrlSwitcher was born.”

Read It Later RESTYLED

“This is a userscript/Safari extension that simply changes the look of the Read It Later Web interface.”

YouTube Video Downloader

“I wrote my first Safari extension today. I think it’s pretty nifty. As the name suggests, it lets you download YouTube videos. Just click the convenient “Download Video” button…”


“FlickrPlus is a browser extension for Safari 5 that provides a collection of tools intended to improve the Flickr experience.”

Middle-Click AutoScroll

“Middle-Click AutoScroll adds support for middle clicking and automatically scrolling a page simply by moving your mouse. This functionality has been available in Firefox and IE for ages – but sadly, Safari doesn’t have it. This extension is especially useful when your Mighty Mouse’s scroll nipple is all bung’d up and you can’t use it to scroll anymore.”

Duplicate Tab

“Adds a button to the Safari toolbar which duplicates the current tab.”


Removes all of the unnecessary features and ads from YouTube.

Better Google Reader

“This extension combines a couple of user scripts, and lets you select which ones to apply to Google Reader”