Read this blog on Google CSE API for more information and detailed documentation.

The Custom Search JSON API lets you develop websites and applications to retrieve and display search results from Google Custom Search programmatically. With this API, you can use RESTful requests to get either web search or image search results in JSON format.
google cse apiBefore using the Custom Search JSON API you will first need to create and configure your Custom Search Engine. If you have not already created a Custom Search Engine, you can start by visiting the Custom Search Engine control panel. By calling the API user issues requests against an existing instance of Custom Search Engine. Therefore, before using the API, you need to create one in the Control Panel. Follow the tutorial to learn more about different configuration options. Once it is created, you can find the engine’s ID in the Setup > Basics > Details section of the Control Panel. This is the cx parameter used by the API.

Google custom search (CSE) pricing 

100 search queries free per day. Additional queries $5 per 1000 queries up to 10000 queries per day.

  1. Standard google custom search pricing- Free
  2. Google custom search for non-profits, government organizations, and educational institutions- Free.
  3. Google custom search JSON API pricing – $5 per 1000 queries. (10,000 queries daily limit).
  4. Google custom search site restricted JSON API pricing- $ per 1000 queries. (no daily limit)

Create a Customizable Search Engine without Google CSE API

Here we will visit the steps required to add the ExpertRec Custom search engine to your website. This is one of the easiest setup processes of all the available options out there and is highly recommended.

  1. Navigate to https://cse.expertrec.com/newuser?platform=cse and signup with your Google ID.
  2. Enter your website’s URL when prompted. You can select a server location near you and add the URL of your sitemap if you wish to. These will be auto-detected otherwise.
  3. You can play around with the settings and customize the UI as the crawl runs. Once it is complete, you can check out a fully functional demo before taking the search to your website.
  4. You can take the search to your website with little to no effort. All you need to do is to paste the code snippet available on the dashboard on your website.

ExpertRec comes with more customization options that you can explore. You can read this article to find a more detailed guide on the installation and configuration.

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