---
schema_version: "1"
id: 403392aa3468bab70b46f48020b674dcd2bf39f0592572dc71eb18beac337f19
title: Configure Speed Settings for an eCDN Zone
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/cc/264-0-0/b2c_configure_zone_speed_settings.md
canonical_url: https://help.salesforce.com/s/articleView?id=cc.b2c_configure_zone_speed_settings.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: e1a71c42e22c8e0371bfcb0593bd69ead3990f5e3701363699a6189a9b9c8b43
description: Optimize B2C Commerce eCDN zone performance by enabling speed settings such as Early Hints, HTTP/3, and image compression via the Configure Zone screen in Business Manager.
products:
  - Commerce
  - B2C Commerce
release: "264"
---
# Configure Speed Settings for an eCDN Zone

Optimize B2C Commerce eCDN zone performance by enabling speed settings such as Early Hints, HTTP/3, and image compression via the Configure Zone screen in Business Manager.

Speed settings improve site performance for shoppers. Each setting can have different effects depending on your site's configuration. Test settings individually to measure their impact before enabling them on zones with production traffic. For conceptual background on each feature, see [Site Speed Enhancements for eCDN Zones](https://help.salesforce.com/s/articleView?id=cc.b2c_enhance_site_speedxml.htm&release=264.0.0&type=5 "Want your customers to love their online shopping experience? Speed up your web store. These speed optimization features help your B2C Commerce storefront load faster, so customers spend less time waiting and more time browsing.").

![Note](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-cc-b2c_merchandiser_administrator-264-0-0-production-enus/ea76f372-6cfa-42a6-8e7c-05c6df7abed8/images/icon_note.png)

Note Each optimization toggle saves immediately when you turn it on or off. There is no separate Save button.

![Note](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-cc-b2c_merchandiser_administrator-264-0-0-production-enus/ea76f372-6cfa-42a6-8e7c-05c6df7abed8/images/icon_note.png)

Note Speed settings aren't available on SCAPI zones. See [SCAPI Zone Support for B2C Commerce](https://help.salesforce.com/s/articleView?id=cc.b2c_scapi_zone.htm&release=264.0.0&type=5 "A SCAPI zone is the Salesforce-managed eCDN zone that fronts Salesforce Commerce API (SCAPI) traffic. Starting with B2C Commerce 26.10, the Production instance includes a subset of eCDN security controls and analytics for this zone in Business Manager and the CDN API, with no support case required.").

1. In Business Manager, click the App Launcher, and then select **Administration** | **Sites** | **Embedded CDN Settings**.
2. Locate the zone you want to configure and select **Configure Zone** from the dropdown menu.
3. Select the **Speed** tab.
    
    **Speed tab — Optimization settings and Polish Level**
    
    ![Configure Zones Speed tab showing optimization toggles for Early Hints, Brotli, HTTP/3 and HTTP/2 to Origin, plus Polish Level and WebP options.](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-cc-b2c_merchandiser_administrator-264-0-0-production-enus/ea76f372-6cfa-42a6-8e7c-05c6df7abed8/cc/b2c_merchandiser_administrator/images/b2c_ecdn_configure_zone_speed_v2.png)
4. (Optional) In the Optimization section, select any of the following settings to improve site performance:
    
    <table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small ">
            <colgroup>
              <col style="width:23.201856148491874%">
              <col style="width:76.79814385150812%">
            </colgroup>
            <thead class="slds-text-title_caps ">
              <tr class="">
                <th scope="col" class="slds-cell-wrap" style="vertical-align:top;" id="d79173e122">Speed Setting</th>
                <th scope="col" class="slds-cell-wrap" style="vertical-align:top;" id="d79173e125">Action</th>
              </tr>
            </thead>
            <tbody>
              <tr class="">
                <td data-label="Speed Setting" class="slds-cell-wrap" style="vertical-align:top;" headers="d79173e122 ">Early Hints</td>

                <td data-label="Action" class="slds-cell-wrap" style="vertical-align:top;" headers="d79173e125 ">
                  <p>Early Hints makes the most of the time while the server prepares a response. With
                    this approach, instructions are sent to the browser to start loading resources while the
                    origin server is busy. By sending these hints before the full response is ready, the
                    browser can figure out how to load the webpage faster for the end user. </p>
                  <p>To take
                    advantage of 103 Early Hints, enable the <code>Link</code> HTTP header in the
                    <code>addHttpHeader</code> method within the <code>dw.system.Response
            class</code>. Typically <code>rel=preload</code> and
                    <code>rel=preconnect</code> are used with the primary need to support
                    <code>rel=preload (with as=... values image, style, script) and
            rel=preconnect</code> Link headers.
                  </p>
                  <pre class="line-numbers slds-box slds-box_x-small slds-theme_shade slds-m-top_medium slds-m-bottom_medium slds-scrollable_x"><code>response.addHttpHeader("Link", "&lt;/path/to/resource&gt;; rel=preload; as=image");
response.addHttpHeader("Link", "&lt;https://example.com&gt;; rel=preconnect");</code></pre>
                  <p style="margin-bottom:0;">For reference see <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Link" target="_blank">MDN Web Docs -
                      Link</a>.</p>
                </td>

              </tr>
              <tr class="">
                <td data-label="Speed Setting" class="slds-cell-wrap" style="vertical-align:top;" headers="d79173e122 ">HTTP/3</td>

                <td data-label="Action" class="slds-cell-wrap" style="vertical-align:top;" headers="d79173e125 ">HTTP/3 uses QUIC, which is a secure-by-default transport protocol. HTTP/3 improves
                  page load times in a similar way to HTTP/2. However, the QUIC transport protocol solves
                  TCP's head-of-line blocking problem, meaning that performance over lossy networks can be
                  better.</td>

              </tr>
              <tr class="">
                <td data-label="Speed Setting" class="slds-cell-wrap" style="vertical-align:top;" headers="d79173e122 ">HTTP/2 Origin</td>

                <td data-label="Action" class="slds-cell-wrap" style="vertical-align:top;" headers="d79173e125 ">Leverages HTTP/2 protocol between eCDN and the origin, meaning performance can be
                  better between the two. This setting takes effect only when your origin supports
                  HTTP/2.</td>

              </tr>
              <tr class="">
                <td data-label="Speed Setting" class="slds-cell-wrap" style="vertical-align:top;" headers="d79173e122 ">Brotli</td>

                <td data-label="Action" class="slds-cell-wrap" style="vertical-align:top;" headers="d79173e125 ">Using Brotli for serving static text-based web assets (HTML, CSS, JS, JSON) provides
                  better performance, smaller payloads and faster delivery times. This enhancement allows
                  for easier and more intuitive management of compression settings.</td>

              </tr>
            </tbody>
          </table>
    
    These speed settings usually improve site performance, but the degree to which they do depends on various unique aspects of the site's configuration. Test each speed setting one at a time to accurately measure the performance improvement of each feature.
5. (Optional) In the Polish Level section, select one of the following options:
    
     
    | Polish Level Option | Action |
    | --- | --- |
    | Polish Level Off | No image modification occurs. |
    | Polish Level Basic | Image file size is reduced without impacting visual quality. This option removes metadata for PNG, GIF, and JPEG files. It also results in lossless compression of PNG and GIF files. |
    | Polish Level Basic+JPEG | In addition to the actions for the basic level, file size of JPEG images is reduced using lossy compression, which can reduce visual quality. Large JPEG images are converted to progressive images (site visitors see an increasingly detailed image as the file is downloaded). This functionality is applied only to images served through the eCDN. Images retrieved from third-party sites are not modified. |
    
    The Polish Level applies to all images served from hostnames within the zone. It isn't possible to use different Polish Levels for different images or a device type-specific Polish Level. Test a new Polish Level with a zone without production traffic before enabling it for a zone with production traffic.
6. (Optional) In the Polish Level section, select **WebP** to enable WebP image support.
    
    The eCDN supports the `WebP` image format for added performance benefits with supported clients.
    
    If you choose Polish Level Basic (GIF, PNG):
    
    - WebP is rarely beneficial in this mode because WebP is only adequate for PNG images and can't improve compression for JPEG images.
    
    If you choose Polish Level Basic + JPEG:
    
    - Although WebP compresses better than JPEG on average, there are exceptions. eCDN detects these cases and retains the JPEG format when JPEG compresses better.
    - eCDN does not convert from JPEG to WebP when the conversion makes the file bigger or reduces image quality by more than it saves in file size.
    - Large JPEG images are converted to progressive images. Shoppers see an increasingly detailed image as the file is downloaded.
    
    ![Note](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-cc-b2c_merchandiser_administrator-264-0-0-production-enus/ea76f372-6cfa-42a6-8e7c-05c6df7abed8/images/icon_note.png)
    
    Note **WebP** requires **Polish Level** set to **Basic** or **Basic+JPEG**.

- **[Site Speed Enhancements for eCDN Zones](https://help.salesforce.com/s/articleView?id=cc.b2c_enhance_site_speedxml.htm&release=264.0.0&type=5)**  
    Want your customers to love their online shopping experience? Speed up your web store. These speed optimization features help your B2C Commerce storefront load faster, so customers spend less time waiting and more time browsing.