Direct Linking sends affiliate traffic straight to the brand's landing page, and a script on that page tracks the click and the sale. HitPath still tracks the affiliate, campaign, subIDs and sale, and standard tracking links remain available.
How does Direct Linking track a click and a sale?
The cdl.js script on the landing page tracks the click and sets a first-party cookie on the brand's domain, then the script on the order confirmation page finds the cookie and tracks a new sale.
With HitPath Direct Linking (CDL), affiliates send traffic straight to the brand's landing page, and HitPath still tracks the affiliate, campaign, subIDs and sale. Standard tracking links still work and still power most HitPath traffic. Direct Linking is an extra option you enable per campaign, not a replacement.
The affiliate sends the visitor to the brand's landing page with tracking parameters in the URL. One script on two pages handles the click and the sale. Campaign status, approvals, caps, user-agent checks and strict IP checks are all still enforced. Refreshing the confirmation page is tracked as a duplicate, not a second sale.
These are the parameters Direct Linking reads:
- Affiliate: pub, or utm_source as an alternative. If both are present, pub wins.
- Campaign: sid, or utm_campaign as an alternative. If both are present, sid wins.
- SubIDs: c1, c2 and c3, with no alternative. They are passed through and tracked.
Why does redirect-free tracking matter now?
Safari and Firefox limit redirect-based tracking, Google Ads disapproves ads whose final URL redirects to a different domain, and Meta requires what an ad promotes to match its landing page.
Browsers and ad platforms are both moving away from tracking redirects. Here is where each one stands:
- Safari has blocked third-party cookies by default since March 2020, and its tracking prevention detects domains used for redirect ("bounce") tracking. (WebKit)
- Firefox clears cookies from redirect tracking sites every 24 hours under Enhanced Tracking Protection. (Mozilla)
- Google Ads disapproves ads whose final URL redirects to a different domain. (Google)
- Meta requires what an ad promotes to match its landing page. (Meta)
Direct Linking gives brands and media buyers a clean option for these channels. Attribution data created on the brand's own domain, through a transparent traffic path, is where tracking is heading as browsers tighten privacy.
What do brands and affiliates get from it?
Brands keep ads pointed at their real pages with the cookie on their own domain and their campaign rules still enforced, while affiliates can pass campaign, ad set and ad IDs into c1, c2 and c3.
For brands and advertisers
- Ads point to your real pages, and the tracking cookie lives on your own domain.
- Affiliates can run your offers on paid social and search without tracking-domain URLs.
- Your campaign rules (status, approvals, caps, IP and user-agent checks) still apply.
- Refreshes are caught as duplicates, and order ID and sale amount can be tracked with each sale.
For affiliates and media buyers
- Paste the brand's real landing page into Ads Manager.
- Pass your campaign, ad set and ad IDs into c1, c2 and c3 and see them in HitPath.
- Set pub and sid explicitly so UTMs added elsewhere never overwrite attribution.
Example: Direct Linking with Meta Ads
A media buyer promotes a brand's offer on Facebook and Instagram through a HitPath campaign. In Meta Ads Manager, set the ad's Website URL to the brand's landing page, for example https://www.yourbrand.com/landing-page.
In the URL parameters field, enter:
pub=AFFILIATE_ID&sid=CAMPAIGN_ID&c1={{campaign.id}}&c2={{adset.id}}&c3={{ad.id}}
Meta fills in the campaign, ad set and ad IDs on each click, and HitPath tracks them as c1, c2 and c3. The ad points at the brand's real page, and the buyer can optimize down to the ad level.
How do you set it up in HitPath?
Turn on Direct Linking under Links & Redirection, copy the script from the Direct Linking (CDL) tab in Campaign Actions, add it to the landing and confirmation pages, and share the Direct Link with affiliates.
Setup takes one script on the landing page and one on the confirmation page. In the code below, replace yourtrackingdomain.com with the tracking domain shown in your campaign's Direct Linking (CDL) tab. HitPath's Managed Services team can also enable CDL, place the scripts and test the flow for you.
Step 1: Turn on Direct Linking
Open the campaign in HitPath, go to the Links & Redirection section, set Direct Linking Enabled to Yes, and save the campaign.
Step 2: Copy your script
Open Campaign Actions and click the Direct Linking (CDL) tab, next to the Pixel tab. It shows the script for your campaign, with your tracking domain already filled in.
Step 3: Add the script to your landing page
Place it right before the closing </body> tag:
<script src="https://yourtrackingdomain.com/cdl.js"></script>
Only add it to the landing page and confirmation page. On a page with no tracking parameters, the script attempts to track a sale if the cookie exists.
Step 4: Share the Direct Link with affiliates
https://www.yourbrand.com/landing-page?pub=AFFILIATE_ID&sid=CAMPAIGN_ID&c1=SUBID1
Step 5: Track the sale on the confirmation page
Use one option, never both, or the sale may be tracked twice.
Option A: basic. Add the same cdl.js script before </body>.
Option B: with order ID and sale amount. Use this snippet instead of cdl.js. It reads the click ID (the Hit ID in HitPath) from the cookie and sends the order ID (transid) and sale amount (ate) to HitPath. Replace ORDER_ID and ORDER_TOTAL with your platform's order values.
<script>
(function () {
var match = document.cookie.match(/(?:^|;\s*)CDL=([^;]+)/);
if (!match) return;
var cdl;
try { cdl = JSON.parse(decodeURIComponent(match[1])); } catch (e) { return; }
if (!cdl.hid) return;
new Image().src = 'https://yourtrackingdomain.com/pixel.php'
+ '?hid=' + encodeURIComponent(cdl.hid)
+ '&sid=' + encodeURIComponent(cdl.utm_campaign)
+ '&transid=' + encodeURIComponent('ORDER_ID')
+ '&ate=' + encodeURIComponent('ORDER_TOTAL');
})();
</script>
Step 6: Keep URLs intact
No redirect or plugin should strip parameters from the landing page URL. The confirmation page URL must not contain pub, sid, utm_source or utm_campaign, or the visit counts as a new click.
Test before paid traffic goes live
Run one test in a private browser window before any paid traffic starts.
- Open the landing page with test values: ?pub=TEST_AFF&sid=CAMPAIGN_ID&c1=test
- Confirm a cookie named CDL appears on your domain (browser developer tools).
- Confirm the click shows in HitPath with the right affiliate, campaign and subID.
- Complete a test order and confirm the sale is attributed to that click.
- Refresh the confirmation page and confirm it shows as a duplicate.
When should you keep using standard tracking?
Use standard tracking if the landing and confirmation pages are on different domains or the confirmation page does not allow custom JavaScript.
Direct Linking requires both pages to be on the same domain, and a confirmation page that allows custom JavaScript. If your setup doesn't meet both, keep using HitPath's standard tracking for that campaign.
Common questions
Does Direct Linking replace standard tracking? No. It's an extra option you enable per campaign, and standard tracking stays available.
Can I use UTMs instead of pub and sid? Yes. If both are present, pub and sid win, which is why we recommend them for paid media.
Why isn't the order ID tracked when I add transid to the confirmation URL? The cdl.js script doesn't read it from the URL. Use Option B in Step 5.
Can HitPath set this up for me? Yes. HitPath's Managed Services team can enable CDL, place the scripts and test the flow.
Get started
Direct Linking is available in HitPath now. Turn it on under Links & Redirection, copy the script from Campaign Actions > Direct Linking (CDL), and follow the steps above. If you don't see the Direct Linking option in your campaign settings, contact HitPath to have it enabled for you.