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Complementary feature for conversion analytics

When you have a conversion-tracking tag on your website, security strengthening by browser providers may affect accurate conversion tracking.

To solve this issue, we provide "auto-tagging" in addition to "site general tag" and "complementary feature tag."
Learn more about Conversion Analytics (Search Ads) and Conversion Analytics (Display Ads (Auction)).

In Display Ads, if you select a country other than "Japan" when creating an account, you can't use auto-tagging. Even if you install the complementary feature tag of conversion analytics, you can't complement the conversion tracking.

To use these complementary features for conversion analytics, the following setup is required.

1. Set the auto-tagging
2. Add "Site general tag" and "Complementary feature tag" on each page in your website

1. Set the auto-tagging

About auto-tagging setting

When you set the auto-tagging for your account, the parameter “YCLID” (yclid=xxxxxxxxx) is added to the first destination page's URL after the internet user's ad click on ads. This parameter is used as click identification and a complementary feature of conversion tracking.

You can set auto-tagging on the account level. When using multiple accounts or using both Search Ads and YDN, check auto-tagging is activated for each account.

URL examples

When auto-tagging is "Set":
When auto-tagging is "Do not set":
*The parameter “yclid=xxxxxxxxx” also appears on the address bar in the browser.

When auto-tagging is “Set,” an error page may appear on some websites that don't allow optional URL parameters. You can't check the URL that contains added parameters.
Ask the administrator of your website or test the behavior by clicking ads when Auto-tagging is “Set.”

“YCLID” parameter on URLs

The following table describes where the “YCLID” parameter is added to the URL.

URL patterns:ExampleAfter YCLID parameter is added
Not include ‘?’ nor ‘#’
Includes ‘?’ not include ‘#’
Not include ‘?’ includes ‘#’
Includes ‘?’ and ‘#’
The value of the "YCLID" parameter is a maximum of 300 characters. If your tool or site configuration requires it, make sure that you can get YCLID correctly using the following sample.


The following steps describe how to change auto-tagging settings.

Edit Auto-tagging

  1. From the top bar, click the “Search Ads“ or the "Display Ads."
  2. Click "Administration."
  3. Click "Items Displayed" on the right.
  4. To add an auto-tagging column, select “Auto-tagging” and click "Apply."
  5. Select "Set" or "Do not set" from the drop-down menu.

2. Install "Site general tag" and "Complementary feature tag" on each page on your website

Install "Site general tag" and "Complementary feature tag" on each page on your website.
Learn more about Site general tag.

How to get site general tag and complementary feature tag

You can get the site general tag in two ways:
From the Account List
From the Conversion Details

From the Account List

Before getting "Site general tag" and "Complementary feature tag" in the account list, check your auto-tagging is "Set" with the steps described inEdit Auto-tagging.

  1. Click the "Review" button on the left side of the account list.
  2. Click the "View tag" in "Auto-tagging" at the bottom, then copy the tag that appears.
    The tag contains both "Site general tag" and "Complementary feature tag."

From the Conversion Details

<Search Ads>

  1. From the top bar, click the “Search Ads.“
  2. From "Tools" in the top bar, select Conversion Analytics.
  3. Click the "Conversion Settings" tab > "View Tag" under the "Conversion Tag" column.
  4. From "Site general tag, complementary feature tag of conversion analytics,"  select "Use (view "Site general tag" and "Complementary feature tag of conversion analytics".)
    Example of code:
    "Site general tag" and "complementary feature tag"

<Display Ads>

  1.  From the top bar, click the "Display Ads."
  2. From the top bar, click the "Tools" icon.
  3. From "Common library," click the "Conversion tracking."
  4. At the "Tracking tag" column, click the "View tag." 
  5. Select "Install site general tag and complementary feature tag of conversion tracking", then use the tag appears.

How to add site general tag

Add "Site general tag" and "Complementary feature tag" on each page on your website. 
When your website has a cross-domain, refer to the steps on "Settings for Cross-domain.
When you add the tag to your website, please check the following points.

  • Place "Site general tag" and "Complementary feature tag" right after the HEAD starting tag and before the conversion tag on each page of your website.
  • When you already installed the site general tag and add a new complementary feature tag: replace the existing site general tag with "Site general tag" and "complementary feature tag." Getting only a complementary feature tag isn't available.
  • When the advertiser provides users' data that is taken as personal information to us, you must handle it by abiding by the Personal Information Protection Act upon managing the users' data.
  • On the address bar of the landing page, “yclid=xxxxxxxxx” must be shown. If redirecting with third-party tracking tools, the "YCLID" parameter may not be displayed. Please ask your tool vendor whether the parameter is displayed or not.
  • The “xxxxxxxxx” part of the description “yclid=xxxxxxxxx” will be a unique value on each ad click.
  • The website owner is solely responsible for the behavior and management of the site retargeting and complementary features on your website.

Settings for cross-domain

When your website has a cross-domain, the following settings are required.
(a) Add "Site general tag" and "complementary feature tag." on the page with the same domain to the web page that you have added a conversion tag.
(b) To run "Site general tag" and "complementary feature tag," “yclid” is required. Take over the parameter “yclid” to the web page where the tag is added on step (a).
*How to take over the parameter depends on the structure of your website. Ask your website administrator about details.

If you have questions about these settings, please contact us from the inquiry form.If you can't contact us through the form, email us at:
Tell us the following information when you contact us:
  • Account ID
  • Account name
  • Administrator's name

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