Author
Rahul D Sarker
Founder, UTMLoop· Kolkata, India
Rahul D Sarker is the founder of UTMLoop. He is a Fractional CMO and RevOps specialist based in Kolkata, India, and also founded RDS & CO, which builds revenue systems for growth-stage companies worldwide.
His work wires performance marketing, marketing attribution, and revenue operations into one system: GA4 and Google Tag Manager implementations, server-side conversion APIs, CRM pipelines in HubSpot and Salesforce, and paid media across Google, Meta, and LinkedIn.
Areas of expertise
- Marketing Attribution
- UTM Parameters
- GA4
- Google Tag Manager
- Revenue Operations
- Performance Marketing
- Server-side CAPI
- HubSpot
- Salesforce
- Go-to-Market Strategy
Articles by Rahul D Sarker (203)
Link Tracking & Short Links
- How to Migrate From One Link Shortener to Another Without Breaking Links
- The Best Link Shortener Setup for Social Media Managers
- Choosing a Link Shortener for E-Commerce Stores
- Link Shortener Pricing Compared: What You Actually Get at Each Tier
- 17 Top UTM Link Shorteners Compared for 2026
- How to Shorten a URL: Every Method Explained
- Free URL Shorteners That Don't Require Signup
- Custom Link Slugs: How to Name Short Links People Actually Click
- Do Short Links Really Get More Clicks? What the Data Says
- Are Short Links Safe? How to Avoid Looking Like Spam
- Branded Short Links vs Generic Short Links: Which Builds More Trust?
- Why Long URLs Kill Your Click-Through Rate on Social Media
- Link Rot: What Happens When Short Links Die?
- How Link Redirects Work (Explained Without Jargon)
- Choosing a Link-in-Bio Tool for Instagram (and Setting It Up Right)
- Short Links for SMS Marketing: Character Limits and Best Practices
- How to Shorten Links in Bulk for a Big Campaign
- Choosing a Link Shortener for Your Business
- Best URL Shortener: 6 Tools Compared Head-to-Head
- Top Free Link Shorteners Compared Side by Side
- Best URL Shorteners in 2026, Ranked and Compared
- The Best Link Shortener for Marketers in 2026
- Link Shorteners Explained: Why Short Links Get More Clicks
Competitor Comparisons
- Bl.ink Alternatives Without Enterprise Pricing
- Best Free URL Shorteners That Don't Require an Account
- 5 TinyURL Alternatives for When Free Isn't Enough
- Bitly vs TinyURL: Which Free Shortener Wins?
- Dub vs Short.io: Picking the Right Link Tool
- 6 Short.io Alternatives Compared on Price and Features
- Rebrandly vs TinyURL: Free Shortener or Branded Platform?
- The Best Dub Alternatives for Solo Founders and Startups
- Dub vs PartnerStack: Affiliate Tracking Compared
- 7 Dub.co Alternatives for Teams That Outgrew It
- Linktree vs Bitly: Link-in-Bio Tool or Link Shortener?
- Bitly vs Rebrandly vs Short.io: A Three-Way Comparison
- Bitly Pricing Explained (and What Switching Actually Costs)
- Bitly vs Rebrandly vs Replug: Which Wins in 2026?
- utm.io Alternatives: 6 UTM Tools Compared
- Bitly vs Rebrandly: An Honest Comparison
- Why Marketers Outgrow Google's Campaign URL Builder
- 8 Rebrandly Alternatives for Branded Links in 2026
- 7 Google Campaign URL Builder Alternatives That Do More
- 9 Bitly Alternatives Worth Switching To in 2026
- Bl.ink vs Bitly: Compliance vs Convenience
UTM Tools & Link Management
- Campaign URL Builder for GA4: Step-by-Step Setup
- The Best URL Shortener Chrome Extensions
- Can You Use Bitly as a UTM Builder? What It's Missing
- The Best Free UTM Builders in 2026, Tested
- Custom Alias Links: Naming Short URLs People Trust
- How to Choose a UTM Campaign Builder for Your Team
- What Is a UTM Builder? A Complete Guide
- How to Create a Vanity URL That Builds Trust
- What Are Deep Links, and Why Do Marketers Need Them?
- Branded Links Explained: Why They Convert Better
- The Case for a Dedicated UTM Tool Instead of a Spreadsheet
- API Access for UTM and Link Tools: What to Look For
- How to Set Up a Custom Domain Link Shortener
- How to Audit Your Team's UTM Workflow for Waste
- UTM Builder vs Link Shortener: The Actual Difference
- Open Source URL Shorteners: When Self-Hosting Makes Sense
- 5 Advanced Link Management Strategies Most Teams Skip
- The 10 Best Link Management Tools in 2026, Ranked
- Link Management for Marketing Teams: A Buyer's Guide
- What Is a Link Attribution Platform, and Do You Need One?
- How to Bulk-Tag Hundreds of Links With UTM Parameters
- UTM Templates: How to Stop Retyping the Same Tags
QR Code Marketing
- QR Code API: A Developer's Guide to Programmatic Generation
- Static vs Dynamic QR Codes: The Cost Difference
- QR Codes With a Changeable URL: How and Why
- How a Dynamic QR Code Generator Actually Works
- Dynamic QR Code Tracking Explained
- Branded QR Codes With Analytics: A Practical Guide
- How to Design a Custom QR Code That Still Scans
- The Best Free QR Code Generators in 2026
- QR Code Generators With Real Analytics: What to Look For
- QR Codes for Events: Tickets, Feedback Forms, and Follow-Ups
- QR Codes on Product Packaging: Ideas for Small Brands
- Why Your QR Code Isn't Scanning: 8 Common Fixes
- QR Code Size and Placement: Print Design Best Practices
- 12 Creative QR Code Marketing Campaigns to Steal Ideas From
- Static vs Dynamic QR Codes: The Difference That Saves You Money
- Can You Change Where a QR Code Points After Printing?
- How to Put a QR Code on a Flyer That People Actually Scan
- Restaurant Menu QR Codes: Setup Guide for Café Owners
- How to Track How Many People Scanned Your QR Code
- GS1 Digital Link Explained: What Retail Brands Need to Know
- Building a QR Code Marketing Strategy That Drives ROI
Attribution & Analytics
- Why Marketers Shorten URLs (Beyond Just Looking Clean)
- The Best URL Shortener Setup for Affiliate Marketing
- UTM Tags for Email Marketing Campaigns: A Full Guide
- 6 Practical Ways to Use UTM Tags Beyond the Basics
- Why Your Brand Needs UTM Tracking (Even If You're Small)
- How to Use UTM Codes for Marketing Attribution
- Conversion Tracking vs UTM Tracking: How They Work Together
- GA4 Conversion Tracking Setup: A Step-by-Step Guide
- How to Set Up Cross-Channel Campaign Tracking
- What Is a Tracking URL? A Plain-English Explanation
- Click Tracking Explained: How It Works Under the Hood
- What Is Link Tracking, and Why Does It Matter?
- Google Analytics Alternatives: Where Else Can You See UTM Data?
- Setting Up Conversions in GA4 Without a Developer
- UTM Data in GA4: Building Your First Campaign Report
- Why Your Analytics Numbers Don't Match Your Ad Platform's Numbers
- Understanding Sessions, Users, and Events in Plain English
- GA4 Traffic Sources Explained: Organic, Direct, Referral, and More
- How to Share Analytics Reports with a Non-Technical Boss or Client
- Referral Traffic Explained: Who's Sending Visitors Your Way?
- How to Spot Bot Traffic Polluting Your Analytics
- How to Find Your Campaign Data in Google Analytics 4
- Open Rate vs Click Rate vs Conversion Rate: What Matters Most?
- Why "Direct Traffic" in Analytics Is Often Mislabeled, and How to Fix It
- What Is Attribution in Marketing? A Plain-English Guide
- Tracking Influencer Collaborations: A Step-by-Step Guide
- How to Track a Product Launch Across 5 Channels
- How to Set Up Your First Tracked Marketing Campaign in 10 Minutes
- How Small Businesses Can Track Marketing Like Big Brands
- How Freelancers Can Prove Their Marketing Results to Clients
- First-Click vs Last-Click Attribution: Which Should Beginners Use?
- Campaign Tracking Checklist: What to Do Before You Hit Publish
- 7 Signs Your Marketing Data Is Lying to You
UTM Parameters Basics
- Link Tracking Software Compared: 8 Options for 2026
- Campaign Tracking Tool: A Buyer's Guide for 2026
- How to Track Marketing Campaigns: A Launch-Day Checklist
- UTM Tagging Tips for Non-Marketers Who Still Send Campaigns
- UTM Naming Conventions for Large, Distributed Teams
- UTM Governance: Keeping Tracking Clean as Your Team Grows
- Free UTM Naming Convention Template (with Examples)
- Documentation for Marketers: Why You Need a Tracking Playbook
- Onboarding New Team Members to Your Link Tracking System
- Date-Based vs Theme-Based Campaign Names: Pros and Cons
- How to Create a UTM Naming Convention Your Whole Team Follows
- Standardizing Source Names: Facebook vs FB vs facebook.com
- How to Audit and Clean Up Messy UTM Data
- Lowercase or Uppercase? Setting Rules for Consistent Tracking Tags
- How One Typo Can Split Your Campaign Data in Half
- UTM Best Practices for 2026 (What Changed)
- UTM Links Explained With 10 Real Examples
- What Is a UTM Link? A Beginner's Guide
- The 5 UTM Parameters Cheat Sheet (Print-Friendly)
- The Complete UTM Parameters Glossary (Every Term Explained)
- UTM Parameters vs Cookies: How Website Tracking Really Works
- utm_term and utm_content Explained with Real Examples
- utm_source vs utm_medium vs utm_campaign: What's the Difference?
- How to Interpret UTM Data in Google Analytics 4
- Do UTM Parameters Affect SEO? Myths vs Facts
- How Long Should You Keep Using the Same UTM Tags?
- Can You Use UTM Parameters on Internal Links? (Please Don't)
- Are UTM Parameters Case-Sensitive? (Yes, Here's Why It Matters)
- A Visual Anatomy of a Tracking URL: Every Part Explained
- 10 UTM Parameter Mistakes That Break Your Analytics Data
Enterprise & Compliance
- Best Link Tracking Software for Agencies Managing Multiple Clients
- Connecting a Link Shortener to Google Analytics
- Social Media Link Compliance for Pharma Marketers
- Unbranded vs Branded Links: How to Choose
- Link Tracking in Adobe Analytics: A Practical Guide
- How to Track Referrers From WhatsApp, Telegram, and Viber
- Using Short Links for Internal Communications
- Link Shortener Compliance: A Checklist for Regulated Industries
- GS1 Sunrise 2027: What It Means for Your QR Codes
- SOC 2 Compliant Link Shorteners: A Buyer's Checklist
- How to Choose an Enterprise Link Management Platform
- HIPAA-Compliant URL Shorteners: What to Look For
Campaign Tracking & Analytics
- Vanity Metrics vs Real Metrics: Likes Don't Pay Bills
- Conversion Tracking for Beginners: From Click to Purchase
- How to Decide Which Marketing Channel to Cut
- How to A/B Test Your Marketing Messages Using Tracked Links
- What Is a Good Click-Through Rate? Benchmarks by Channel
- The 80/20 Rule in Marketing: Finding Your Money-Making Channel
- How to Calculate Marketing ROI with Simple Math
- Which Social Media Platform Drives the Most Sales? How to Find Out
- How to Build a Simple Weekly Marketing Report
- Paid Ads vs Organic Posts: Tracking Which Performs Better
- How to Track Marketing Campaigns Without a Marketing Degree
Offline Marketing Tracking
- How to Measure Whether Your Flyers Are Working
- Tracking Billboard and Banner Campaigns with QR Codes
- Packaging Inserts That Drive Repeat Purchases (and How to Track Them)
- Vehicle Branding and Wraps: Can You Measure the Impact?
- Trade Show Marketing: Tracking Leads from Physical Events
- Connecting Offline Campaigns to Online Sales: A Framework
- Print Ads Aren't Dead: How to Make Them Measurable
- How Local Shops Can Track Foot Traffic from Marketing
- Direct Mail Tracking: Postcards That Report Back to You
- Business Cards with QR Codes: A Modern Networking Guide
Email Marketing Tracking
- How to Add Tracking Links to Your Newsletter (Any Platform)
- Why Email Click Data Sometimes Looks Inflated (Bot Clicks Explained)
- Segmenting Your Email List Based on Link Click Behavior
- Welcome Email Sequences: Measuring What New Subscribers Click
- How to Test Subject Lines Using Tracked Links
- Tracking Which Newsletter Section Gets the Most Clicks
- Re-Engagement Campaigns: Tracking Who Comes Back
- Newsletter Sponsorships: Proving Value to Advertisers with Click Data
- Email Signature Links: The Free Marketing Channel You're Ignoring
Social Media Tracking
- Facebook Post vs Facebook Ad Traffic: Telling Them Apart
- Social Media Audit: Using Link Data to Pick Your Best Two Platforms
- WhatsApp Marketing Links: Tracking Clicks from Chats and Status
- Tracking Traffic from Facebook Groups and Communities
- How to Compare Story Links vs Feed Post Links on Instagram
- Twitter/X Link Tracking: Measuring Threads and Replies
- Tracking LinkedIn Content: Personal Profile vs Company Page
- Pinterest Traffic Tracking for E-Commerce Sellers
- How to Track Instagram Traffic When You Only Get One Bio Link
- YouTube Description Links: How to Measure Video-Driven Traffic