Deeplinks vs Affiliate Links for Amazon Creators: Which Drives More Conversions?

A beauty creator I work with ran an experiment last spring. For 30 days she used standard Amazon Associates affiliate links in her Instagram bio. For the next 30 days she switched to deeplinks — links that open the Amazon app directly on mobile instead of the browser. Same products, same posts, same audience size. Her conversion rate jumped from 4.1% to 5.6%. That's a 37% lift, which sounds dramatic but is in the middle of the range creators consistently report when they switch.

What's actually happening, why it matters more in 2026 than it used to, and when deeplinks are the wrong choice — those are the questions worth answering. There's also a lot of confused terminology floating around ("deeplink," "shortlink," "smart link," "universal link") that's worth clearing up first.

Three things, five names

The terminology is a mess. Here's what the words actually mean:

Affiliate link: any URL with a ?tag=youraccount-20 query parameter that attributes the click to your Associates account. The base of every other format. Example: https://www.amazon.com/dp/B07PXGQC1Q?tag=mycreator-20
Deeplink: a link that, when clicked on mobile, opens the Amazon app directly (with the product loaded inside the app) instead of opening a browser tab. Technically these are accomplished via "Universal Links" on iOS and "App Links" on Android.
Shortlink: a wrapped, shorter URL that redirects to the underlying link. amzn.to/3abcdef or a.co/d/xyz are Amazon's official short formats; they're affiliate-trackable. Third-party shorteners (bit.ly etc.) can also work but introduce attribution risk.

So a single link can be all three at once: an amzn.to/... short URL that opens the app on mobile (deeplink behavior) and carries your affiliate tag. Most "deeplink generators" you see advertised are really doing all three: shorten the URL, ensure app-open behavior, preserve the affiliate tag.

Why mobile-app-open behavior matters

In 2026, roughly 78% of clicks on creator-posted Amazon links happen on mobile. About 65% of mobile clicks happen while the user is logged into the Amazon app already (because of session persistence — most app users never log out). Those two numbers together explain why deeplinks move conversion rate.

The user journey with a plain affiliate link on mobile:

User taps the link in your Instagram caption
Mobile browser (Safari, Chrome) opens
Amazon's mobile site loads (slower than app, often with cookie prompts and ad banners)
User is not logged in by default — has to sign in to checkout
Some users abandon at the sign-in step
Some users open the app manually to complete checkout, but now your attribution cookie may not transfer

The deeplink journey on mobile:

User taps the link
Amazon app opens directly (because the user has the app installed, which 88% of US Amazon shoppers do)
Product page loads instantly inside the app
User is already logged in, payment method already on file
One-tap checkout flows seamlessly

The friction removal at steps 3-4 is where the conversion lift comes from. The exact size of the lift varies by audience composition:

Mobile-heavy audience with strong Amazon app penetration: 25-40% lift
Mixed mobile/desktop with average app penetration: 12-20% lift
Desktop-heavy (B2B, professional creators): 0-5% lift, sometimes a negative lift

The negative case matters. If your audience is on desktop, forcing deeplink behavior can backfire because the link routing sometimes adds friction on desktop (extra redirect, occasional "open in app?" prompt that confuses laptop users).

The amzn.to and a.co short formats

Amazon offers two official short link formats:

amzn.to/... — the original. Generated through SiteStripe ("Get Link" → "Text" → "Short Link"). Trackable, supports deeplink behavior on mobile. The downside: Amazon's amzn.to redirects have an internal lag of 2-5 seconds occasionally during peak times, which can briefly show a redirect placeholder page.

a.co/d/... — the newer format. Generated when you "Share" a product from inside the Amazon app on mobile. Also trackable IF the share came from a creator-tagged session. Cleaner-looking URL, fewer redirect hiccups.

Practical guidance:

If you're generating links manually with SiteStripe on desktop, amzn.to is what you get
If you're sharing from the mobile app, a.co/d is what you get
Both work for affiliate attribution. There's no commission difference.
amzn.to shows up in some social media link previews more cleanly (TikTok's link unfurl prefers shorter base URLs)

Avoid third-party shorteners (bit.ly, tinyurl, ow.ly) for affiliate links. They introduce attribution risk — if the shortener service goes down or the redirect chain breaks, your commission tracking dies silently. Stick to Amazon-owned shorteners.

SubID / sub-tag tracking — the unsung feature

Amazon Associates allows you to append a "subID" to any affiliate link. This shows up in your dashboard as a separate row, letting you track which channel drove which conversions.

The format: ?tag=youraccount-20&ascsubtag=YOUR_LABEL

Examples of useful sub-tags:

?ascsubtag=ig-bio for Instagram bio link
?ascsubtag=tt-cap-jul24 for a specific TikTok caption from July 24
?ascsubtag=yt-desc-vid392 for video #392's YouTube description
?ascsubtag=newsletter-jan26 for January 2026 newsletter

After two months of consistent sub-tagging, you can answer questions like:

Which platform drives the highest EPC?
Which content type (review, haul, comparison) converts best?
Which products convert best from which channel?

The Associates dashboard lets you filter by subID under Reports → Tracking IDs. Most creators never use this. The ones who do find that one or two channels generate 60-80% of their revenue, and they reallocate effort accordingly.

A platform like AffiliateReel automates sub-tag generation per platform — every short link you create has a sub-tag baked in based on where you're posting it, so you don't have to type the labels manually each time.

The technical layer: how deeplinks actually work

You don't need to understand this to use deeplinks, but understanding it helps debug when they break.

On iOS, Universal Links is the underlying mechanism. Amazon registered https://www.amazon.com/* (and a few specific patterns) in iOS's link routing system. When a user with the Amazon app installed taps any URL matching those patterns, iOS asks the app to handle it instead of opening Safari.

On Android, App Links does the same thing. Amazon publishes a assetlinks.json file at https://www.amazon.com/.well-known/assetlinks.json that declares the app should intercept matching URLs.

This means: any standard amazon.com/dp/... link is technically already a deeplink on mobile, IF the user has the app installed AND iOS/Android settings are default. What "deeplink generators" actually do is:

Ensure the URL format is one that triggers app-open (some affiliate URL formats with extra parameters break the universal link match)
Use the amzn.to or a.co short format which has more reliable app-open behavior
Add the affiliate tag in a way that survives the app-handoff (the app reads the URL, extracts the tag, attaches it to the session)

The reason "smart" deeplink tools matter: vanilla affiliate URLs with certain parameter orders break the universal link pattern. You can verify this by tapping a long ?tag=...&keywords=...&ref=... link on your phone — it sometimes opens the browser instead of the app, even with the app installed.

When NOT to use deeplinks

Three specific cases where deeplinks underperform vanilla affiliate links:

Desktop-heavy audiences

Business creators, finance creators, professional/B2B niches have audiences that read on laptops at work. Deeplink behavior is irrelevant on desktop (no app to open), and the wrapped URL formats sometimes add unnecessary redirect chains that cost milliseconds.

If your analytics show >50% desktop traffic, the deeplink lift collapses to roughly zero. Use standard affiliate links and focus optimization elsewhere.

Comparison shopping content

Reviews that explicitly compare 3-5 products benefit from the user being able to open multiple tabs in a browser. Deeplinks open the app, which generally only shows one product at a time. Comparison-shopping users in browser tabs convert higher than app users on this specific use case.

International audiences without Amazon app penetration

In some EU markets and most non-US markets outside UK/CA/AU, Amazon app penetration is materially lower (40-60% vs 88% in US). Deeplinks in these markets fall back to browser anyway, but the wrapped URL can confuse some non-English browser locales.

If your audience is primarily Mexico, Brazil, parts of EU, or Asia-Pacific outside Japan, test plain affiliate links first.

Tracking conversions: the attribution lag problem

Worth knowing for anyone reading their dashboard literally: Amazon Associates uses a 24-hour cookie. If a user clicks your link and buys within 24 hours, you get credit. If they buy on day 2, you don't — unless they re-click another tagged link.

This is different from Amazon Attribution (a separate Amazon Ads product) which uses a 90-day attribution window but is only available to Brand Registry sellers. Creators do NOT get the 90-day window. We work in 24-hour reality.

The practical effect: traffic that converts at 12% in your social analytics may show 4-6% in your Associates dashboard, because Associates only sees the same-day conversions. The rest are still real revenue you helped drive, but unattributed.

This is why deeplinks help materially — the app-open behavior compresses the click-to-conversion window. Browser users sometimes save tabs for later (outside the 24-hour window). App users tend to buy within minutes.

FTC disclosure with deeplinks

The FTC's disclosure rules don't change based on link type. Whether it's a plain affiliate URL, a shortlink, or a deeplink, you must:

Disclose the relationship clearly and conspicuously
Place the disclosure close to the affiliate link (not buried at the bottom of a long caption)
Use unambiguous language — "ad," "affiliate," "I earn from qualifying purchases" all work; "thanks for the support" does not

For Instagram, the standard is to use the platform's "Paid Partnership" tool when applicable, and to put "(commissionable link)" or "(affiliate)" within view of the link itself.

For shortlinks specifically, the FTC has commented that wrapping the affiliate disclosure inside a shortlink (so it's invisible at click time) doesn't satisfy the rule. The disclosure has to be visible BEFORE the user clicks. Putting "amzn.to" links in a caption without affiliate disclosure has been cited in past FTC actions.

The good news: a single sentence like "Links below are commissionable" near the top of your caption satisfies the rule for all the links in the post.

Build vs buy: when a deeplink tool is worth it

If you're posting 1-5 affiliate links per week, doing this manually with SiteStripe is fine. Generate links from the Amazon product page, copy/paste into your captions, add a sub-tag manually.

The break-even where automation becomes worth it:

You're posting 10+ links per week
You're tracking per-platform and per-campaign sub-tags
You're managing multiple social accounts
You want consistent shortlinks across channels (instead of mixed amzn.to and raw URLs)

At that volume, the time saved on manual SiteStripe-and-paste is real — 30 minutes a week minimum, often more. A platform like AffiliateReel auto-generates the deeplink-correct format, applies sub-tags by platform, and tracks the click data without you needing to dig through the Associates dashboard.

How to test which works for your audience

The honest answer is "test both and look at your numbers." Run this experiment:

For 21 days, use plain amazon.com/dp/B0XXX?tag=youraccount-20 links with the sub-tag ?ascsubtag=test-vanilla.
For the next 21 days, use deeplink-formatted shortlinks (amzn.to/... or generated through a deeplink tool) with sub-tag ?ascsubtag=test-deeplink.
Compare CR, EPC, and total revenue between the two periods.

21 days controls for day-of-week effects. Sub-tags let you filter cleanly in the Associates dashboard.

What you're looking for:

If deeplink CR is >15% higher: switch to deeplinks for that channel permanently
If the difference is <5%: stick with whatever is easier to generate (probably plain affiliate links)
If deeplinks are WORSE: your audience is desktop-heavy or international, deeplinks are the wrong tool

Amazon Attribution vs Associates dashboard

A confusing thing: Amazon offers two attribution products, and creators only get one of them.

Amazon Associates dashboard — what every creator sees. 24-hour cookie, basic click/conversion data, sub-tag filtering. Free, automatic when you're in Associates.

Amazon Attribution — Amazon's dedicated advertising attribution product. 90-day attribution window, detailed channel-level breakdown, tracks brand search and direct as well as paid. Only available to Brand Registry holders (i.e., sellers who own brands on Amazon). Creators do NOT get access.

This is a known frustration in the creator community: brands get the better attribution tools, creators get the cookie-based one. The workaround is to use sub-tags rigorously and accept that your dashboard understates your real impact by some amount (probably 15-30% based on the gap between attribution windows).

If you're partnering with a brand on Amazon (sponsored content beyond your standard affiliate income), some brands will share their Amazon Attribution data with you to show the full conversion picture. Ask for it. The numbers are often surprising.

A real case study from a fashion creator

Numbers from a fashion creator's experiment, shared anonymously, running March-April 2025:

Setup:

38k Instagram, 92k TikTok, primarily mobile audience
Posts: 3 Reels/week, 2 TikToks/week, plus storefront
All affiliate links in caption, also in LinkTree

Month 1 (vanilla affiliate links via SiteStripe):

Total clicks: 11,400
Conversion rate: 3.8%
Total commissions: $387
EPC: $0.034

Month 2 (deeplink shortlinks via a third-party tool, identical content cadence):

Total clicks: 10,800 (slightly lower volume, possibly because shortlinks look less native)
Conversion rate: 5.4%
Total commissions: $498
EPC: $0.046

The conversion rate jumped 42%, but clicks dropped 5%. Net revenue increased 29%. The EPC lift (35%) is the cleanest number — it strips out the click-volume noise.

Worth noting: not every creator who runs this test gets a positive result. A tech creator in the same group saw essentially flat conversion (3.2% → 3.4%) because his audience was 55% desktop. Audience composition matters more than the link format does in isolation.

What this means for your content strategy

If you're driving most of your traffic from Instagram, TikTok, YouTube Shorts, and other mobile-heavy platforms, you should default to deeplink-formatted shortlinks. The 18-32% conversion lift is real for these audiences.

If you're driving traffic from a blog, a podcast description, or a desktop-heavy audience, you can use vanilla affiliate links — but you should still use the amzn.to short format for cleanliness and the sub-tag for analytics.

The single biggest mistake new Influencers make in linking is not the link format. It's not using sub-tags at all, then complaining that they can't tell which channel works. Spend 10 minutes adding sub-tags to your existing links before you spend an hour optimizing link format.

Speaking of optimization — link format is one of three things you can change to lift your storefront EPC. The other two are storefront layout (covered in [11 Storefront Optimization Tactics](/blog/amazon-influencer-storefront-optimization)) and category mix (covered in [Amazon Creator Commission Rates Explained](/blog/amazon-creator-commission-rates-explained)). Most creators optimize none of these and stay flat for 6+ months. The ones who compound are the ones who run these three experiments in parallel.