> For the complete documentation index, see [llms.txt](https://helps.ptengine.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://helps.ptengine.com/en/start-guide/quick/tag-setup.md).

# How to Install Basic Tags

## How to Install Basic Tags

### **What is a Basic Tag**

To use Ptengine, you need to install a specific code on the pages you want to measure. This code is called the "basic tag" or simply "tag," and it is JavaScript code that includes your project ID.

By installing this basic tag on your site, you can collect numerical data, understand customers using heatmaps, and consistently implement measures such as popups, A/B tests, and personalization.

Implementation is very easy, so let's get started by installing the tag and improving your website's user experience and conversion rate!

### **How to Install Tags (Recommended)**

It is recommended to install the tag directly in your site's HTML.

If you are using Ptengine with Shopify, do not install it directly in HTML and refer to Shopify's setup instructions.

The specific steps are as follows:

**Basic Settings and Tag Retrieval**

Access the target project and click the "Implement" button. Alternatively, click "Basic Settings and Tag Retrieval" from the gear icon next to the project name and proceed to the analysis code settings.

**Copy the Basic Tag**

Copy the basic tag. To prevent errors, we recommend using the copy button.

**Access the HTML**

Access the HTML of the site or page you want to measure.

**Paste**

Find the `head` tag and paste the copied tag within it. Save the changes and reload the page.

## 🎦 Tutorial Video

### **Related Articles**

If it's difficult to install directly in HTML, be aware that [flickering (flicker phenomenon)](/en/start-guide/quick/tag-setup.md) may occur.

Don't forget to [register your domain](/en/start-guide/quick/tag-setup.md).

For other installation methods, please refer to [this article](/en/start-guide/quick/tag-setup.md).