Yes, Feed JSON is free to use. It is available as a free plugin on WordPress.org.

How many websites use Feed JSON?

Feed JSON has 500 active installations as tracked by WordPress.org.

What are the best Feed JSON alternatives?

Popular alternatives to Feed JSON include WebSub (FKA. PubSubHubbub), GN Publisher: Google News Compatible…, RSS for Yandex Turbo. You can compare them side-by-side on our comparison pages.

Does Feed JSON work with the latest WordPress?

Feed JSON has been tested up to WordPress 4.7.33. It requires WordPress 3.0+ and PHP false+.

PluginSift

Feed JSON

Name: Feed JSON
Rating: 4 (4 reviews)
Author: wokamoto

Adds a new type of feed you can subscribe to.

By wokamoto·Feed·Free

4(4 reviews)

·500 active installs·Updated 9 years ago

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As of April 2026, Feed JSON is a WordPress feed plugin with 500 active installations and a 4/5 rating from 4 reviews. It has been downloaded 21K+ times in total. Requires WordPress 3.0+ and PHP false+. Available on WordPress.org since 2011. Last updated 9 years ago — may have compatibility concerns. Top alternative: WebSub (FKA. PubSubHubbub).

4/54 reviews

500active installs

21K+total downloads

15 yearssince 2011

Overview

Adds a new type of feed you can subscribe to.
http://example.com/feed/json or http://example.com/?feed=json to anywhere you get a JSON form.
http://example.com/feed/json?callback=callback or http://example.com/?feed=json&callback=callback to anywhere you get a JSONP.

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