GTM Analytics

Guides

Guides to picking an analytics tool

25 research-led guides, each ending in a recommendation and a table you can check. Grouped by the question you arrived with.

These are the questions people actually type, rather than the categories vendors organise themselves around. Somebody escaping a consent banner, somebody wiring analytics into a Next.js build and somebody trying to work out why their checkout leaks are three different problems, and a single "best tools" list serves none of them well.

Every guide names a recommendation rather than leaving you with a list, sets out the rest of the field with scores, and says where the recommendation is the wrong answer. The scoring method is published in full.

Switching and alternatives

The searches people make when they have already decided to replace something.

Google Tag Manager and tagging

What GTM is, what it is not, whether you need it, and what to do about the tags it was deployed to carry.

Google Tag Manager and tagging

Google Tag Manager, explained

What GTM is, what it definitely is not, and why so many people believe it is an analytics tool.

6 tools compared

Google Tag Manager and tagging

Do you need Google Tag Manager?

A tag manager earns its place on some sites and is pure overhead on others. Here is the test, and the costs on each side.

6 tools compared

Google Tag Manager and tagging

Google Tag Manager alternatives

Why teams leave GTM, what the open-source and privacy-first options actually offer, and when the answer is no tag manager at all.

6 tools compared

Google Tag Manager and tagging

Server-side tagging, explained

What moving your tags to a server actually buys you, what it costs to run, and the cheaper way to get most of the benefit.

6 tools compared

Privacy, compliance and governance

Cookies, consent, GDPR, retention and access, and where your visitors' data ends up.

Privacy, compliance and governance

Cookieless web analytics, explained

How counting visitors without a cookie actually works, what the different approaches can and cannot promise, and which tools do it properly.

6 tools compared

Privacy, compliance and governance

If DuckDuckGo built an analytics tool

Take their published privacy principles, apply them to web analytics, and see what specification falls out. It is a more specific document than you would expect.

Speculation6 tools compared

Privacy, compliance and governance

GDPR compliant analytics tools

What the regulation actually asks of an analytics tool, which claims are meaningful, and the questions worth putting to a vendor before you sign.

5 tools compared

Privacy, compliance and governance

Analytics without a consent banner

The banner is costing you more than you think. Here is how to measure the damage and which tools let you remove it.

5 tools compared

Privacy, compliance and governance

Self hosted web analytics

What running your own analytics actually costs, which projects are worth the operational burden, and when the honest answer is not to.

6 tools compared

Privacy, compliance and governance

Heatmaps without cookies

Every well-known heatmap tool sets cookies and needs a consent banner. Here is the way round that, and what it costs.

5 tools compared

Privacy, compliance and governance

Data governance for analytics

Retention, access, ownership and the event dictionary. The unglamorous work that decides whether anybody trusts your numbers in two years.

6 tools compared

For your stack

What to install given what you have already built, and what it costs you.

For your stack

Analytics for Next.js

Client-side routing breaks naive pageview tracking. Here is what to install, where to put it, and what the platform-native option costs you.

6 tools compared

For your stack

React website tracking

Single-page apps break the assumptions most analytics makes. What to check before you trust a single number.

5 tools compared

For your stack

The lightest analytics script

Script sizes compared, what the weight actually costs in Core Web Vitals, and how to measure the bill your analytics is handing your visitors.

6 tools compared

For your stack

E-commerce analytics software

Revenue attribution, checkout funnels and the privacy problem nobody mentions until the security review.

6 tools compared

For your stack

SaaS product analytics tools

Product analytics answers different questions from web analytics, costs more in every sense, and is regularly bought for the wrong half of the site.

6 tools compared

For your stack

Analytics for Shopify stores

What Shopify's built-in reports already cover, why you cannot simply paste a script into checkout any more, and what to add.

6 tools compared

The job you need doing

Measuring traffic, watching it live, building funnels, recording events and counting conversions.

The job you need doing

How to track website traffic

The five numbers worth watching, how to start measuring them today, and the mistakes that make analytics useless six months in.

5 tools compared

The job you need doing

Real time visitor tracking

When watching traffic live is genuinely useful, when it is a distraction, and which tools do it without tracking individuals.

5 tools compared

The job you need doing

Website event tracking

How to design events you will still understand in a year, what they cost you in most pricing models, and which tools handle them well.

5 tools compared

The job you need doing

Custom conversion tracking

How to define conversions that mean something, build a funnel that survives scrutiny, and avoid the attribution arguments that waste everyone's time.

6 tools compared

The job you need doing

Web analytics for a small business

What a small business actually needs to measure, what it can safely ignore, and how to spend either nothing or about nine dollars sensibly.

6 tools compared

The job you need doing

Web traffic analytics explained

What the category actually covers, what each metric really counts, and why no two tools ever agree on the same website.

6 tools compared

The job you need doing

Funnel analytics, done properly

Designing a funnel that survives scrutiny, reading the drop-off honestly, and which tools include funnels at what price.

6 tools compared