What is the secure image proxy?

With Pro, the pictures inside articles are loaded through Inoreader's own image server instead of straight from the sites that host them, so those sites and their trackers see Inoreader's request rather than your browser's. It's on by default for Pro accounts, and you can switch it off under Preferences > Settings > Article contents.

What the proxy changes

When you open an article, Inoreader fetches every picture in its content and serves it to you from www.inoreader.com. The same goes for the article's cover picture, the pictures in Full content text (the version Inoreader loads when a feed shows only part of an article), the author pictures of social posts and embedded image attachments. The proxied addresses are always HTTPS, so a picture served over plain HTTP no longer mixes insecure content into the page.

Newsletter feeds are articles too, so the images in a newsletter go through the proxy as well and the sender sees Inoreader's request, not yours. List thumbnails in the List, Card and Magazine views are cropped through the same server on every plan.

Check or change the setting

1. Click the gear at the bottom of the tab bar to open Preferences, then Settings.
2. Open the Article contents tab.
3. Tick or untick Image proxy.

Turning Images off in the same tab stops article pictures from loading at all, proxied or not.

The iOS app has a Secure image proxy switch in its settings that changes the same setting, and the apps load the proxied pictures like the web app does. The other display settings are covered in Can I customize how articles are displayed?.

The secure image proxy is a Pro feature, introduced in the blog post New Professional Feature: Secure Image Proxy.