# Crazy Egg — Conversion Optimization

Crazy Egg by Crazy Egg, Inc. holds a panel rating of 1/5 from 6 AI judges (category median 2/5), as of 2026-10-15. Provenance: provenance unknown; sovereignty: not determined.

- Vendor: Crazy Egg, Inc. (https://www.crazyegg.com)
- Category: [Conversion Optimization](https://whats-best.ai/software/conversion-optimization.md)
- Provenance (editorial classification): provenance unknown
- Canonical page: https://whats-best.ai/software/conversion-optimization/crazy-egg
- Alternatives: https://whats-best.ai/software/conversion-optimization/crazy-egg/alternatives ([markdown](https://whats-best.ai/software/conversion-optimization/crazy-egg/alternatives.md))
- Data as of: 2026-10-21 · evaluated 2026-10-15 · oldest source captured 2026-10-13

**AI-generated.** Every score, rationale and verdict here is written by a panel of AI judges from public evidence — an analysis, not a hands-on test. Every fact quotes the vendor page it was read from. No score can be bought. How scores are made: https://whats-best.ai/methodology

## At a glance

- Vendor: Crazy Egg, Inc.
- Headquarters: Not stated on the vendor’s pages as of 13 Oct 2026
- Data hosting: Not stated on the vendor’s pages as of 13 Oct 2026
- Free plan: Not stated on the vendor’s pages as of 13 Oct 2026

## The panel's verdict

Crazy Egg is strongest on performance impact, the highest score at 4: asynchronous non-blocking loading, explained flicker with head-placement guidance and a support-issued anti-flicker code, and no published script-size figures. Experimentation scope scores sit at 3: client-side A/B testing through a page editor, unlimited variants, wildcard URL patterns, plan-dependent targeting, and Multi-Arm Bandit or Classical Split allocation. Statistical rigour splits the judges at 2 to 3, turning on how much credit the two named allocation methods — Multi-Arm Bandit and Classical Split — deserve without public information on winner determination, intervals or sample-size guidance. Data and integrations score 2: a well-documented GA4 path — five custom dimensions, a GTM container import file — and no public information on result export or a documented API. Consent and tracking scores sit at 1: privacy pages document input masking and element exclusion in recordings, while we found no public information on the script's storage or behaviour before consent. Sovereignty scores run 0 to 1 — AWS hosting, no stated region, jurisdiction and subprocessor exposure unknown — and pricing transparency scores 0, common in this market.

**Speaks for it:**
- Performance impact scores 4, the highest score awarded, on documented asynchronous, non-blocking script loading.
- Flicker is explained with remedies — head placement, removing inactive tests to shrink the snippet, and a support-issued site-specific anti-flicker code for editor-built tests.
- A GA4 path is documented end to end: a variant-view custom event with five custom dimensions and a ready-made GTM container import file.
- Unlimited variants, wildcard URL patterns and plan-dependent audience targeting are documented for editor-built A/B tests.
- Published data practices include input masking and an element-exclusion tool in recordings, tested daily, weekly and monthly backups, and a database accessible only from application servers inside an Amazon VPC.

**Held against it:**
- Consent and tracking scores sit at 1: we found no public information on what the script stores or when it runs relative to consent.
- Statistical rigour scores split 2 to 3: the documented material stops at allocation choice, with no public information on winner determination, intervals or sample-size guidance.
- Sovereignty scores run 0 to 1: AWS S3 backups and Amazon VPC with no stated region, and jurisdiction, data residency and subprocessor exposure unknown.
- Data and integrations score 2: beyond GA4 we found no public information on result export, visitor-level data or a documented API.
- No published figures for script size or load cost; 'lightweight' appears as a description without numbers.

**Best for:**
- You need client-side A/B tests built in a visual page editor on pages developed outside the tool, with unlimited variants and wildcard URL patterns for multi-page tests.
- You run Google Analytics 4 and want variant views pushed there as a custom event carrying five custom dimensions.
- Flicker on your marketing pages is a concern and you can work with a support-issued, site-specific anti-flicker code for editor-built tests.

**Avoid if:**
- Your data protection officer must clear the test script before launch: the published privacy material covers recordings, and we found no public information on the script's storage, consent timing or consent-platform integration.
- You need a vendor-published winner-decision method, intervals or sample-size guidance before calling a result — the documentation names the allocation methods only.
- Your analysis depends on exporting results or querying a documented API beyond the single GA4 event path.
- Your procurement requires confirmed data residency, contracting-entity jurisdiction or a subprocessor list — all three are unconfirmed on the vendor's own pages as captured.

## Scores by judge and criterion

Scores out of 5, each judge scoring independently against the published rubric (v1). "n/r" = not rated: the vendor publishes no price.

| Criterion | The Growth Lead | The E-Commerce Manager | The Product Engineer | The CRO Consultant | The Data Protection Officer | The Skeptic |
| --- | --- | --- | --- | --- | --- | --- |
| Experiment types & delivery | 1.5/5 | 1.5/5 | 1.5/5 | 1.5/5 | 1.5/5 | 1.5/5 |
| Statistical method & guardrails | 1/5 | 1.5/5 | 1/5 | 1/5 | 1.5/5 | 1.5/5 |
| Consent & visitor tracking | 0.5/5 | 0.5/5 | 0.5/5 | 0.5/5 | 0.5/5 | 0.5/5 |
| Snippet performance & flicker | 2/5 | 2/5 | 2/5 | 2/5 | 2/5 | 2/5 |
| Analytics, data export & integrations | 1/5 | 1/5 | 1/5 | 1/5 | 1/5 | 1/5 |
| European sovereignty | 0/5 | 0.5/5 | 0/5 | 0/5 | 0.5/5 | 0/5 |
| Pricing transparency | n/r | n/r | n/r | n/r | n/r | n/r |
| **Weighted verdict** | **1/5** | **1.5/5** | **1/5** | **1/5** | **1/5** | **1/5** |

### The judges

- **The Growth Lead** (v1.0): Runs the testing programme for a German marketing team and reports uplift to the board. Wants a visual editor the team can use without a developer, targeting that goes beyond the URL, and results she can defend when finance asks where the promised revenue went.
- **The E-Commerce Manager** (v1.0): Owns a shop where a tenth of a second of load time shows up in the conversion rate. Wants personalisation that can be tested against a control, a snippet that does not flicker the product page, and a traffic-based price that does not jump a tier every December.
- **The Product Engineer** (v1.0): Ships experiments behind feature flags and would rather not ship a third-party script at all. Wants server-side SDKs for the stack in use, edge delivery, metrics computed in the warehouse the team already trusts, and an API good enough to build internal tooling on.
- **The CRO Consultant** (v1.0): Sets up testing programmes for several clients and has to recommend a platform each can afford and defend. Reads for multi-project management, clean analytics integration, a consent setup a client's DPO will sign off, and a traffic metric she can estimate before the contract.
- **The Data Protection Officer** (v1.0): Has to answer whether the test script may run before the consent banner is answered, and usually finds the vendor has not said. Wants the storage keys listed, a documented consent-pending mode, visitor data processed in the EU, and a published subprocessor list that includes the CDN.
- **The Skeptic** (v1.0): A statistician who has watched too many "winners" regress to zero. Reads for the method by name, what stops a team from peeking, sample ratio mismatch checks and multiple-comparison corrections — and treats a "probability to beat" without documented assumptions as marketing.

## European sovereignty — proven facts

Built only from facts on the vendor's own pages; a dimension we could not prove is left open, never scored as zero. Headline: not determined.

| Dimension | Finding | Points | Source |
|---|---|---|---|
| Legal entity | Not determined | — | — |
| Ownership | Not determined | — | — |
| Data residency | Not determined | — | — |
| Subprocessors | Not determined | — | — |

## Key facts

Each fact is the vendor's own statement, cited to the source page it was read from ([S*n*] → Sources).

**Compliance**
- Access logging: yes [S5]
- Access logs scope: all account levels · sign-in/sign-out · tracking changes · settings updates [S5]
- Code reviews: Automated source code analysis, peer review of all code, manual analysis of security-sensitive code [S5]
- Employee 2FA: SSO, strong passwords and/or 2FA required for employee production access [S5]
- Employee nda: All employees sign NDA; access restricted to required data [S5]
- Employee training: Security/privacy training at hire plus quarterly awareness training [S5]
- GDPR: yes · Health Care · Financial [S5]
- Incident response plan: Incident Response Plan, tested and refined regularly [S5]
- Ip anonymization: last IPv4 octet set to 0 before storage · determine geographic location [S5]
- No pii in snapshots: yes [S5]
- Owasp: Software designed, reviewed and tested using applicable OWASP standards [S5]
- Password hashing: BCrypt with random salt [S5]
- Penetration testing: third-party security assessments and penetration tests · annually [S5]
- Regulations: GDPR · CCPA · HIPAA · PIPEDA [S4]
- Sdlc: SDLC includes threat modeling, static analysis, dynamic analysis, third-party assessments, canary releases [S5]
- Session management: Sessions logged out on browser quit; session cookie deleted and identifier invalidated on sign-out [S5]
- Siem: SIEM and security monitoring tools on production servers [S5]
- Tls encryption: TLS for all end-user and visitor communications [S5]
- Uuid identifier: Returning visitors tracked via UUID, not personal information [S5]

**Hosting**
- Backup retention: AWS S3 · 3 · daily [S5]
- Backups: yes · daily · weekly · monthly [S5]
- Data replication: Data replicated across multiple data centers [S5]
- Vpc isolation: App and DB servers in Amazon VPC; DB accessible only from application servers [S5]

**Integrations**
- Ga4 ab test custom event: crazyegg_variant_view · GA4 via Google Tag Manager · yes [S9]
- Ga4 custom dimensions: 5 · Crazy Egg AB Test ID · Crazy Egg AB Test Name · Crazy Egg Variant ID · Crazy Egg Variant Name · Crazy Egg AB Test and Variant [S9]
- Ga4 gtm container file: Provides a GTM container import file: Crazy Egg GA4 GTM integration.json [S9]
- Google analytics ab test event: Google Analytics (GA4) · yes · crazyegg_variant_view [S8]
- Google analytics custom dimensions: 5 · Crazy Egg AB Test ID · Crazy Egg AB Test Name · Crazy Egg Variant ID · Crazy Egg Variant Name · Crazy Egg AB Test and Variant [S8]
- Google tag manager extra steps: yes [S8]

**Legal**
- Company: Crazy Egg, Inc. [S5]
- Entity: Crazy Egg, Inc. [S4]
- Entity name: Crazy Egg, Inc. [S7]

**Product**
- Ab draft saving: yes [S3]
- Ab test variants: yes [S3]
- Ab testing: A/B testing with two or more page versions [S2]
- Audience targeting plan dependent: yes [S3]
- Authentication: Authentication required on all app pages; credentials sent via TLS-encrypted POST [S5]
- Automatic snapshots: yes · yes [S3]
- Conversion tracking setup: yes [S3]
- Customer data collected: name · email · payment information · website domains [S5]
- Flicker code availability: yes · only for tests created using the A/B editor [S6]
- Flicker definition: Flicker is when the control is briefly visible before changing to the variant, caused by slow site loading. [S6]
- Flicker page speed recommendations: Use a CDN and compress images (PNG) to speed up testing pages [S6]
- Flicker snippet size reduction: Remove inactive tests to reduce snippet size [S6]
- Non blocking: no [S7]
- Page editor method: A/B tests can be created on pages developed outside Crazy Egg via the Page Editor method [S3]
- Positioning: See what's wrong with your website. [S1]
- Recordings exclusion tool: yes [S4]
- Recordings input masking: yes [S4]
- Script async: script runs asynchronously and doesn't delay loading other resources [S7]
- Script lightweight: script described as lightweight and optimized to minimize speed impact [S7]
- Support channels: Customer Success team available to investigate performance issues [S7]
- Test control: Traffic split evenly until test is turned off [S2]
- Traffic allocation: Visitor allocation uses a random sampling algorithm [S2]
- Traffic split: 50/50 [S2]
- Traffic split methods: Multi-Arm Bandit · Classical Split [S3]
- User roles: Granular user roles/permission levels for team accounts [S5]
- Wildcard URL targeting: yes [S3]

**Support**
- Flicker code process: Flicker code: contact support with test ID and domain name; support provides site-specific code [S6]

## Questions

### Is Crazy Egg European?

Not determined: the vendor’s pages as captured do not say where Crazy Egg is based.

### Where does Crazy Egg store data?

Not stated on the vendor’s pages as of 13 Oct 2026.

### Does Crazy Egg have a free plan?

Not stated on the vendor’s pages as of 13 Oct 2026.

### What are the best alternatives to Crazy Egg?

As of 21 Oct 2026, the panel rates [GrowthBook (3.5/5)](https://whats-best.ai/software/conversion-optimization/growthbook), [Convert Experiences (3.5/5)](https://whats-best.ai/software/conversion-optimization/convert-experiences) and [Webtrends Optimize (3/5)](https://whats-best.ai/software/conversion-optimization/webtrends-optimize) highest among the other 31 Conversion Optimization products evaluated. Ratings that look equal are rounded to half stars; the order uses the unrounded rating, then the name. The highest-rated European alternative is [Webtrends Optimize](https://whats-best.ai/software/conversion-optimization/webtrends-optimize) (UK / wider Europe). Ratings are the AI panel’s opinion, formed from public evidence: [how scores are made](https://whats-best.ai/methodology#ordering). The full list, with European products first: [Crazy Egg alternatives](https://whats-best.ai/software/conversion-optimization/crazy-egg/alternatives).

## What this page leaves out

- We could not confirm any pricing information on the vendor’s own pages as captured, so this page shows none rather than a statement we cannot stand behind.
- 4 product facts could not be confirmed on the vendor’s page as captured and were left out of this page and of the panel’s material.
- 3 compliance facts could not be confirmed on the vendor’s page as captured and were left out of this page and of the panel’s material.
- 3 hosting facts could not be confirmed on the vendor’s page as captured and were left out of this page and of the panel’s material.
- 1 subprocessors fact could not be confirmed on the vendor’s page as captured and was left out of this page and of the panel’s material.
- 2 sovereignty dimensions could not be confirmed on the vendor’s own pages and are shown as unknown.
- 6 of the readings below were written against an earlier fact sheet — a fact has been corrected, added or pulled since. Until the panel next runs on this product you are reading the older judgement.

## Sources

- [S1] Vendor page: https://www.crazyegg.com (checked 2026-10-13)
- [S2] Experiment types & delivery — found from sitemap: https://support.crazyegg.com/knowledge-base/crazy-egg-a-b-tests-guide-to-classic-split-testing/ (checked 2026-10-13)
- [S3] Experiment types & delivery — found from sitemap: https://support.crazyegg.com/knowledge-base/create-your-first-a-b-test-using-page-editor/ (checked 2026-10-13)
- [S4] Consent & visitor tracking — found from sitemap: https://support.crazyegg.com/knowledge-base/crazy-egg-privacy/ (checked 2026-10-13)
- [S5] Consent & visitor tracking — found from sitemap: https://support.crazyegg.com/knowledge-base/crazy-egg-privacy-data-practices/ (checked 2026-10-13)
- [S6] Snippet performance & flicker — found from sitemap: https://support.crazyegg.com/knowledge-base/flicker/ (checked 2026-10-13)
- [S7] Snippet performance & flicker — found from sitemap: https://support.crazyegg.com/knowledge-base/does-crazy-egg-impact-your-page-speed-a-real-world-example/ (checked 2026-10-13)
- [S8] Analytics, data export & integrations — found from sitemap: https://support.crazyegg.com/knowledge-base/a-b-test-and-google-analytics-integration/ (checked 2026-10-13)
- [S9] Analytics, data export & integrations — found from sitemap: https://support.crazyegg.com/knowledge-base/a-b-test-and-google-analytics-integration-via-gtm/ (checked 2026-10-13)

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Cite as: whats-best.ai, "Crazy Egg — Conversion Optimization", AI panel analysis, as of 2026-10-21. https://whats-best.ai/software/conversion-optimization/crazy-egg

Corrections: https://whats-best.ai/correct/688?target=page