Connecting Judge.me to Reddit

Architecture

How Judge.me and Reddit actually connect

Two systems that know nothing about each other. Everything below exists to give them one shared reference.

1. Step 1

   Judge.me holds the truth

   The store already holds the money. Judge.me contributes a verified-buyer flag and a discount coupon for reviewers, and the coupon is the only part with revenue consequences.

2. Step 2

   Reddit needs a click to match

   Reddit matches server events on the click identifier and hashed customer information. Reddit's Conversions API is younger than Meta's and its documentation moves, so confirm the current endpoint and required fields directly rather than from an integration blog post.

3. Step 3

   The identifier is the bridge

   The rdt_cid click identifier, captured at the visit and carried into the Judge.me review request. Without it there is nothing to join on and no tool fixes that.

4. Step 4

   The event source decides reliability

   Send purchases only. If the review coupon drives a second order, mark it as retention rather than folding it into the acquisition figure.

5. Step 5

   Deduplication at the destination

   Reddit deduplicates on a conversion identifier carried by both the pixel and the server event. Because so much Reddit traffic never runs the pixel, sending server-side only is a legitimate choice here in a way it rarely is elsewhere — and it removes the deduplication problem entirely. Decide deliberately rather than running both and hoping.

Diagnose it honestly

Working vs. broken, side by side

Both states look identical from the Reddit dashboard, which is why this runs for months before anyone notices.

Diagnostic sequence

Diagnostic order

Each step rules out a class of cause. Run them in order and the last one usually has a single explanation standing.

1. 1

   Count reviews carrying the rdt_cid click identifier

   The ceiling on everything else. Do this before debugging anything downstream.

2. 2

   Follow one real conversion end to end

   From the ad click through Judge.me and into Reddit.

3. 3

   Look for review coupon codes inside paid conversions

   One query. If they are in there, your acquisition return is overstated and you now know by how much.

4. 4

   Measure click-identifier capture on Reddit traffic specifically

   Not across all traffic. A healthy site-wide capture rate routinely hides a poor one on exactly the segment you are paying for.

5. 5

   Read the match rate, not the success message

   Reddit Ads Manager reports events received and matched. Expect lower match rates here than on Meta or Google and report the gap rather than explaining it away — reconcile against your own records for the same window.

Source-of-truth validation

How it gets proven

Against Judge.me's own records, not against either platform's dashboard.

• The rdt_cid click identifier confirmed present on a live review.
• A real conversion followed from click through Judge.me to Reddit.
• Capture rate measured on Reddit traffic specifically, and the pixel-versus-server-only decision documented.
• Orders reconciled with review-coupon orders identified and excluded from the paid figure.
• Reconciled over a fully closed window, matched per record rather than on totals.
• Re-checked 30 days later.

Straight talk

When you don't need this

Worth reading before paying anyone, including us.

• If Reddit already reports conversions that reconcile against Judge.me's records within a few percent, this join is working and there is nothing to buy.
• Measure identifier coverage yourself first — pull your last hundred reviews and count how many carry the rdt_cid click identifier. Ten minutes, free, and it tells you whether any of this is worth doing.
• For most Shopify stores, Judge.me needs no tracking work at all beyond keeping review events out of the conversion list.
• If your Reddit strategy is organic community presence rather than ads, none of this applies — that traffic has no click identifier by definition.