ShortlyLink vs Rebrandly: Branded Links and Affiliate Tracking Compared

Both ShortlyLink and Rebrandly turn long URLs into short, branded links on a domain you control. The real difference shows up after the click: Rebrandly is built around branded short links and link management at scale, while ShortlyLink is built for affiliate and performance marketers who need to prove that a click became a paid conversion. If your job depends on postbacks, payouts, and keeping bots out of your stats, that focus is the deciding factor.

Quick answer

• Rebrandly is a well-known platform for branded short links and link management at scale. Use it when clean, on-brand links and broad link organization are the priority. For current plans, limits, and pricing, check Rebrandly directly.
• ShortlyLink is a URL shortener and link manager for affiliate marketers. It also gives you branded custom domains (verified by DNS TXT), but adds server-to-server postback and pixel conversion tracking, per-click bot and fraud scoring, an exclusive redirect targeting chain, and QR codes.
• Both support custom branded domains. Pick ShortlyLink if you need signed, deduplicated conversion tracking with payout caps and bot filtering. It is free during beta (no credit card).

What both tools do well

At the surface, ShortlyLink and Rebrandly overlap:

• Custom branded domains. Instead of a generic short domain, links go out on your own name. ShortlyLink lets you add a domain, verify ownership with a DNS TXT record, and then assign that domain per link. Rebrandly is widely known for branded links on custom domains too.
• Short, memorable back-halves. ShortlyLink auto-generates an 8-character code, or you can set a custom back-half of 3–50 characters (letters, numbers, _ and -), with reserved words blocked and uniqueness enforced. Lookups are case-insensitive.
• Link organization at volume. ShortlyLink supports bulk import of up to 500 links per request with per-row error reporting and shared campaign, tags, domain, expiry, and UTM settings.
• Analytics on every click. Both give you click reporting; where they differ is in depth and in what happens to conversions, which is covered below.

If your requirement stops at "clean branded links, organized and tracked," both tools are reasonable and you should compare Rebrandly's current plans against ShortlyLink's beta directly.

What affiliate marketers need beyond branding

Branded links are table stakes. Affiliate and performance marketers get paid on outcomes, so the platform has to close the loop from click to conversion to payout — reliably, and without letting fraudulent traffic pollute the numbers. This is where ShortlyLink is purpose-built.

Server-to-server postbacks and pixel conversions

ShortlyLink accepts conversions two ways, both through one signed path:

• Server-to-server postback (GET /postback) — the standard way affiliate networks report a conversion back to you without relying on the browser.
• Browser pixel (POST /api/conversions/pixel) — a thank-you-page pixel for cases where S2S is not available.

The mechanism is what makes it trustworthy:

• Click ID on every redirect. Each redirect appends a click id (cid), an expiry (exp), and an HMAC-SHA256 signature (sig) to your destination URL. Your postback or pixel must return those values.
• Signed and time-bound. The signature has a 24-hour TTL. Late conversions are rejected, which stops stale or replayed reports from being counted.
• Deduplicated by click id. A repeat conversion on the same cid returns HTTP 409 — no double counting.
• Payout clamping. The reported amount is capped at the link's maxPayout (or a default max of 1000). Negative, NaN, or Infinity values resolve to 0, so a malformed payload can't inflate revenue.
• Normalized statuses. Conversions settle to confirmed, pending, or rejected.

Conversions and revenue then surface in your dashboard, in CSV export, and through optional conversion webhooks. Generic branded-link tools are not built around this signed, deduplicated, payout-aware path — it is the core of what ShortlyLink does.

One link, an exclusive redirect targeting chain

A single ShortlyLink short link can resolve to different destinations depending on who clicks. It runs an exclusive priority chain, where each stage only runs if an earlier stage didn't already set a target:

1. Geo rules — route by visitor country.
2. Weighted rotation — split traffic across destinations by weight.
3. A/B test — compare variants (note: rotation and A/B are mutually exclusive on the same link, and rotation wins).
4. Mobile deep link — send iOS and Android into an app, with a web fallback.
5. Original URL — the default if nothing above applied.

For affiliates, this means one link can send US traffic to one offer, rotate across networks, and deep-link mobile users — without minting a new link each time. ShortlyLink also serves social preview cards (OG/Twitter) to crawlers while redirecting humans, and can fire retargeting pixels (Facebook, Google gtag, TikTok, plus a sandboxed custom pixel) before forwarding. Redirects are fast, low-latency, and case-insensitive.

Per-click bot and fraud scoring

If bots inflate your clicks, your conversion rate and payouts look wrong. ShortlyLink scores every click 0–100 using signals like known bot user agents, missing or inconsistent headers, scripting UAs (curl, wget, python-requests, headless browsers), rapid clicks (8 within 10 seconds per fingerprint), and geo "impossible travel" (same fingerprint in a different country within ~10 minutes).

That score maps to risk tiers:

• normal (below 40)
• log (40 and up)
• challenge (70 and up) — a signed, ~2-minute JS challenge that non-JS bots fail
• block (90 and up) — a 403 page, recorded but excluded from stats

Crucially, bot traffic is excluded from your stats automatically, so the numbers you optimize against reflect real humans. An anomaly job runs every 5 minutes to catch traffic spikes and bot surges, sending in-app or Slack alerts. (One practical gotcha: testing your own link with curl trips the block tier and returns a 403 — use a real browser to test.)

QR codes and privacy-first tracking

ShortlyLink generates styled QR codes (square, dots, rounded, or classy modules; optional center logo with error correction raised to stay scannable) and exports them as PNG, SVG, JPEG, or print-ready PDF from a single source, with bulk ZIP export. QR scans are counted separately (source: qr) from link clicks and bio taps.

On privacy: ShortlyLink uses no cookies or localStorage for click tracking. The visitor fingerprint is a one-way, server-side hash — a point worth noting as consent rules tighten.

Comparison table

Capability	ShortlyLink	Rebrandly (general)
Branded custom domains	Yes — verify by DNS TXT, assign per link	Yes — well known for branded links; check current plans
Custom back-halves	3–50 chars, uniqueness enforced	Supported; check current limits
Bulk link import	Up to 500 links per request, per-row errors	Check current plans
S2S postback + pixel conversions	Yes — one signed path	Not its focus; verify with Rebrandly
Click id + HMAC signature + 24h TTL	Yes	Verify with Rebrandly
Conversion dedup + payout caps	Yes (409 on repeat; maxPayout)	Verify with Rebrandly
Redirect targeting chain (geo/rotation/A-B/deep link)	Yes — exclusive priority chain	Verify with Rebrandly
Per-click bot/fraud scoring with tiers	Yes (0–100; bots excluded from stats)	Verify with Rebrandly
QR codes (styled, multi-format)	Yes	Verify with Rebrandly
Link-in-bio + pre-sell pages	Yes (/@username, /p/:slug)	Verify with Rebrandly
Pricing	Free during beta, no credit card	Check Rebrandly's current pricing

For anything in the Rebrandly column, treat it as a prompt to review their current documentation and plans rather than a stated limitation.

Which tool suits you?

Choose Rebrandly if your primary need is branded short links and link management at a large, general scale, and conversion attribution is handled elsewhere in your stack. It is a mature, well-known option in that category — compare its current plans and pricing to your requirements.

Choose ShortlyLink if you are an affiliate marketer, media buyer, or performance-focused creator who needs branded links and a signed, deduplicated conversion path, payout caps, bot filtering that keeps stats clean, and one link that can geo-route, rotate, A/B test, and deep-link. See the full features list for the complete picture.

A common pattern: set maxPayout on each offer up front, read the cid/exp/sig off the redirected URL, and wire your network's S2S postback (or a thank-you pixel) through the signed, deduplicated path. Remember signatures expire after 24 hours, rotation suppresses A/B on the same link, and you should never test with curl (it returns 403).

If you are also weighing a mainstream shortener, see ShortlyLink vs Bitly for how the affiliate feature set compares there.

The bottom line

Rebrandly and ShortlyLink both deliver branded links on your own domain. The gap opens on what happens after the click: ShortlyLink is engineered around affiliate conversion tracking — postbacks and pixels, HMAC-signed click ids with a 24-hour TTL, dedup, payout clamping — plus per-click bot scoring and an exclusive redirect targeting chain. If getting paid accurately for real traffic is the point, that is the platform built for it.

Ready to try it? Start free at /register — no credit card, limited beta spots.