SmarterQueue

SmarterQueue lets your schedule your social posts to Facebook, Twitter, LinkedIn, Pinterest, and Instagram. The SmarterQueue Chrome Extension lets you share any webpage or image that you find online, in a couple of clicks - publish it straight away, schedule a time, or add it to your Queue to be posted once, or recycled. Whether you're reading a blog post, an article you found on Facebook, Twitter, or your favorite news reader; click the Q icon to create a post with the content. You can edit the post text for each platform, add your saved hashtags and snippets, add images from the link, choose scheduling options, and preview the post for each social platform.

Screenshots from Chrome Web Store