URL shortener & link management guides
Guides, comparisons, and how-tos on link management, click analytics, QR codes, and EU-first privacy - from the people who build Elido.
Browse all articlesStart here: cornerstone guides
- URL shorteners for ecommerce: the funnel data plane
- GDPR for URL shorteners: what your DPO actually wants to see
- Sentry/GlitchTip across 12 Go services on the hot path
- URL shorteners for marketers: the 2026 comparison matrix
- Hitting p95 < 15ms for redirects from FRA, ASH, and SGP
- EU data residency for marketing tools: what your DPO actually asks
FeaturesWhat Is Marketing Attribution? The Link-First Guide
What is marketing attribution? A plain-English definition, how it works for link and QR campaigns, what click data can't prove, and the privacy limits.
7 min readwhat is marketing attribution · marketing attribution · campaign attribution
ComparisonsShort.io vs Rebrandly: Pricing, Features, and Real Fit
Short.io vs Rebrandly compared on pricing tiers, custom domains, analytics, API, QR and bio pages, teams, and compliance, with sources and access dates.
7 min readshort.io vs rebrandly · rebrandly vs short.io · short.io pricing
EngineeringShort Code Generation: Base62 vs Hash vs Random Codes
Short code generation base62 vs hash vs random: exact keyspace math, birthday-bound collision odds, retry patterns, and why sequential codes leak link counts.
10 min readshort code generation base62 · base62 encoding · url shortener hash collision
EngineeringRedirect Chain and SEO: How Many Hops Is Too Many?
A redirect chain is two or more redirects in a row. See what Google documents about hops and crawl budget, how to trace chains with curl, and flatten them.
10 min readredirect chain · redirect chains seo · multiple redirects
IndustriesQR Codes for Banking: Use Cases, Risks and Controls
QR codes for banking work for payments, onboarding, branches and statements. Where they fit, how quishing and tampered stickers bite, and the controls to set.
9 min readqr codes for banking · qr codes for finance · banking qr code security
TutorialsWhatsApp QR Code: Make One for Chat, Group or Business
How to make a WhatsApp QR code three ways: a wa.me chat link with a prefilled message, the Business app's own code, or a group invite - and how to count scans.
8 min readwhatsapp qr code · whatsapp qr code generator · wa.me link
TutorialsLinkedIn QR Code: How to Find, Share, and Track It
Find the LinkedIn QR code built into the mobile app, or make your own from a profile URL so you can count scans and keep the print when your handle changes.
7 min readlinkedin qr code · linkedin profile qr code · qr code for linkedin
IndustriesQR Code for Data Collection: Forms, Check-In, Inventory
A QR code for data collection opens a form; it stores no answers. Pick dynamic or static, give each placement its own short link, and know what scans tell you.
7 min readqr code for data collection · survey qr code · form qr code
TutorialsQR Code Error Correction Levels: L, M, Q, H Explained
QR code error correction levels L, M, Q and H recover 7, 15, 25 and 30% of a damaged code. See module counts per level and when each one pays off.
7 min readqr code error correction levels · qr code error correction · qr code level h
FeaturesSMS Shortened Links Blocked? What Carriers Really Filter
Are SMS shortened links blocked? Carriers and CTIA single out shared public shorteners. See what gets filtered, what's unverified, and how to stay deliverable.
7 min readsms shortened links blocked · carrier filtering shortened links · do carriers block bit.ly
FeaturesDo Branded Links Get More Clicks? What the Data Shows
Branded links click-through rate claims like 39% have no published method behind them. See what the evidence supports and how to A/B test your own lift.
9 min readbranded links click-through rate · do branded links get more clicks · branded short links
FeaturesShort Link Domain Name: How to Choose One That Lasts
How to choose a short link domain name: subdomain vs dedicated domain, TLD trust and registry rules, typeability, lookalike risk, spam reputation and DNS.
8 min readshort link domain name · branded short domain · choose a domain for short links
ComparisonsBitly Review: Honest Pros, Cons, and Who Should Use It
A Bitly review built on its own pricing page: what it does well, where the caps and price jumps bite, and which buyers should pick it or skip it.
8 min readbitly review · bitly pros and cons · is bitly worth it
ComparisonsBest Link Management Tools: 7 Platforms Ranked for Teams
Best link management tools compared on folders, roles, SSO, API, branded domains, QR and EU data residency, with dated pricing and an honest verdict on each.
10 min readbest link management tools · link management software · link management platform
FeaturesFirst Touch vs Last Touch Attribution: Models Compared
First touch vs last touch attribution, plus linear, time-decay and position-based, run on one QR-to-email journey with real numbers and where each model lies.
10 min readfirst touch vs last touch attribution · attribution models · multi-touch attribution
EngineeringVerify Webhook Signatures: HMAC-SHA256 in Node, Python, Go
How to verify a webhook signature with HMAC-SHA256: raw body, constant-time compare, replay window and secret rotation, with Node, Python, Go and n8n code.
10 min readverify webhook signature · webhook signature verification · hmac webhook
ComplianceMixpanel EU Data Residency: Hosts, Dropped Events, GDPR
Mixpanel EU data residency explained: which ingestion host each region uses, why events sent to the wrong one vanish, and what it means for GDPR transfers.
7 min readmixpanel eu data residency · api-eu.mixpanel.com · mixpanel india residency
TutorialsLink Analytics API: Pull Click Stats With an API Key
A link analytics API guide: which click reports an API key can read, the query params, JSON response shapes, cursor paging and a daily Slack report script.
9 min readlink analytics api · click analytics api · short link stats api
TutorialsGA4 Measurement Protocol Debug: Why 2xx Proves Nothing
GA4 Measurement Protocol debug guide: use the validation server, read validationMessages, know what it skips, and confirm server events in GA4.
8 min readga4 measurement protocol debug · measurement protocol validation server · debug/mp/collect
EngineeringAPI Key Permissions: Least Privilege for Link Tools
API key permissions for link tools, done right: workspace-bound keys, role caps, peppered hashes, per-key rate limits, rotation and safe handoff to n8n or Make.
9 min readapi key permissions · least privilege api keys · api key scopes