GTmetrix vs. Optimizely Web Experimentation

Overview
ProductRatingMost Used ByProduct SummaryStarting Price
GTmetrix
Score 9.9 out of 10
N/A
Gtmetrix is an analytics tool focused on determining website performance with features like page load speed details, video capture, and the ability to test from multiple regions around the world.
$10.67
per month
Optimizely Web Experimentation
Score 8.6 out of 10
N/A
Whether launching a first test or scaling a sophisticated experimentation program, Optimizely Web Experimentation aims to deliver the insights needed to craft high-performing digital experiences that drive engagement, increase conversions, and accelerate growth.N/A
Pricing
GTmetrixOptimizely Web Experimentation
Editions & Modules
Solo
$10.67
per month
Starter
$21.25
per month
Growth
$42.50
per month
Basic
Free
No answers on this topic
Offerings
Pricing Offerings
GTmetrixOptimizely Web Experimentation
Free Trial
NoYes
Free/Freemium Version
YesNo
Premium Consulting/Integration Services
NoYes
Entry-level Setup FeeNo setup feeOptional
Additional Details
More Pricing Information
Community Pulse
GTmetrixOptimizely Web Experimentation
Features
GTmetrixOptimizely Web Experimentation
Testing and Experimentation
Comparison of Testing and Experimentation features of Product A and Product B
GTmetrix
9.4
5 Ratings
12% above category average
Optimizely Web Experimentation
7.9
154 Ratings
5% below category average
a/b experiment testing10.03 Ratings9.0154 Ratings
Split URL testing10.03 Ratings8.5126 Ratings
Multivariate testing7.52 Ratings8.4131 Ratings
Multi-page/funnel testing8.03 Ratings7.9119 Ratings
Cross-browser testing10.05 Ratings8.089 Ratings
Mobile app testing9.02 Ratings8.068 Ratings
Test significance9.02 Ratings8.4140 Ratings
Visual / WYSIWYG editor10.01 Ratings7.9125 Ratings
Advanced code editor10.01 Ratings7.9117 Ratings
Page surveys10.01 Ratings6.217 Ratings
Visitor recordings10.01 Ratings8.418 Ratings
Preview mode10.02 Ratings7.6137 Ratings
Test duration calculator7.53 Ratings7.5105 Ratings
Experiment scheduler10.01 Ratings8.2104 Ratings
Experiment workflow and approval10.01 Ratings7.882 Ratings
Dynamic experiment activation10.01 Ratings7.566 Ratings
Client-side tests8.52 Ratings7.990 Ratings
Server-side tests8.53 Ratings7.245 Ratings
Mutually exclusive tests10.01 Ratings8.075 Ratings
Audience Segmentation & Targeting
Comparison of Audience Segmentation & Targeting features of Product A and Product B
GTmetrix
10.0
1 Ratings
14% above category average
Optimizely Web Experimentation
8.3
146 Ratings
5% below category average
Standard visitor segmentation10.01 Ratings8.4141 Ratings
Behavioral visitor segmentation10.01 Ratings7.8116 Ratings
Traffic allocation control10.01 Ratings9.1139 Ratings
Website personalization10.01 Ratings7.9106 Ratings
Results and Analysis
Comparison of Results and Analysis features of Product A and Product B
GTmetrix
10.0
2 Ratings
15% above category average
Optimizely Web Experimentation
8.3
142 Ratings
4% below category average
Heatmap tool10.01 Ratings9.313 Ratings
Click analytics10.01 Ratings8.833 Ratings
Scroll maps10.01 Ratings8.517 Ratings
Form fill analysis10.01 Ratings8.066 Ratings
Conversion tracking10.01 Ratings8.744 Ratings
Goal tracking10.01 Ratings8.2120 Ratings
Test reporting10.02 Ratings7.9130 Ratings
Results segmentation10.02 Ratings7.797 Ratings
CSV export10.01 Ratings7.995 Ratings
Experiments results dashboard10.02 Ratings8.049 Ratings
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Score 8.9 out of 10
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User Ratings
GTmetrixOptimizely Web Experimentation
Likelihood to Recommend
10.0
(7 ratings)
8.6
(241 ratings)
Likelihood to Renew
-
(0 ratings)
9.5
(51 ratings)
Usability
9.1
(1 ratings)
10.0
(58 ratings)
Availability
-
(0 ratings)
10.0
(7 ratings)
Performance
-
(0 ratings)
7.3
(6 ratings)
Support Rating
4.0
(2 ratings)
10.0
(16 ratings)
Online Training
-
(0 ratings)
3.0
(1 ratings)
Implementation Rating
-
(0 ratings)
8.0
(11 ratings)
Configurability
-
(0 ratings)
6.0
(1 ratings)
Product Scalability
-
(0 ratings)
7.9
(151 ratings)
User Testimonials
GTmetrixOptimizely Web Experimentation
Likelihood to Recommend
Gossamer Threads Inc.
GTmetrix is very well suited for small organizations or startups that do not have sufficient technical staff for site optimization. GTmetrix also comes with the free version, which allows users to use their service for free for up to three websites, which is a good option. However, this might not be the best option for a large organization that works in different technical domains and have a good number of technical staff.
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Optimizely
I have found Optimizely has been really useful to run some quick experiments to validate the approach to changes to the website, exploring multiple options simultaneously to save time and effort prior to making more permanent changes with our development team. The biggest challenge has been ensure ideas from the wider business have all the necessary criteria to make them a worthwhile experiment. Encouraging stakeholders to create a proper hypothesis for each experiment has helped focus the minds on the outcomes we're expecting. This also makes the analysis easier once we've concluded a test
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Pros
Gossamer Threads Inc.
  • Really complete report of performance issues.
  • Get reports from PageSpeed and YSlow at same time.
  • Gives a score from each separate tool, also displays loading time, page size and total requests very easily.
Read full review
Optimizely
  • The Platform contains drag-and-drop editor options for creating variations, which ease the A/B tests process, as it does not require any coding or development resources.
  • Establishing it is so simple that even a non-technical person can do it perfectly.
  • It provides real-time results and analytics with robust dashboard access through which you can quickly analyze how different variations perform. With this, your team can easily make data-driven decisions Fastly.
Read full review
Cons
Gossamer Threads Inc.
  • Deeper knowledge of page elements and their importance
  • Knowing which areas will have great impact beyond time of load speeds
  • Should drop any elements that do not reach a certain level of impact - to save distraction and get important issues dealt with
Read full review
Optimizely
  • JavaScript is hard to implement sometimes especially for JQuery elements
  • ROI reporting should be part of the overall experimentation reporting
  • CMP integration: where we can easily show status of test on the HPT request
  • CMS integration
  • More widgets like social proof banners, etc.
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Likelihood to Renew
Gossamer Threads Inc.
No answers on this topic
Optimizely
I rated this question because at this stage, Optimizely does most everything we need so I don't foresee a need to migrate to a new tool. We have the infrastructure already in place and it is a sizeable lift to pivot to another tool with no guarantee that it will work as good or even better than Optimizely
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Usability
Gossamer Threads Inc.
It's easy to use fast, data is easy to read and take aways are great too.
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Optimizely
Optimizely Web Experimentation's visual editor is handy for non-technical or quick iterative testing. When it comes to content changes it's as easy as going into wordpress, clicking around, and then seeing your changes live--what you see is what you get. The preview and approval process for sharing built experiments is also handy for sharing experiments across teams for QA purposes or otherwise.
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Reliability and Availability
Gossamer Threads Inc.
No answers on this topic
Optimizely
I would rate Optimizely Web Experimentation's availability as a 10 out of 10. The software is reliable and does not experience any application errors or unplanned outages. Additionally, the customer service and technical support teams are always available to help with any issues or questions.
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Performance
Gossamer Threads Inc.
No answers on this topic
Optimizely
I would rate Optimizely Web Experimentation's performance as a 9 out of 10. Pages load quickly, reports are complete in a reasonable time frame, and the software does not slow down any other software or systems that it integrates with. Additionally, the customer service and technical support teams are always available to help with any issues or questions.
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Support Rating
Gossamer Threads Inc.
I have never had the need to use GTmetrix support. Therefore, there is really no way for me to give a grade here. However, if you are on a paid plan my guess and it is a guess, is that their support is as good as the tool is. There are a lot more features in the paid plans, reporting. monitoring etc. I could see where support could come into play as these features are added to the account
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Optimizely
They always are quick to respond, and are so friendly and helpful. They always answer the phone right away. And [they are] always willing to not only help you with your problem, but if you need ideas they have suggestions as well.
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Online Training
Gossamer Threads Inc.
No answers on this topic
Optimizely
The tool itself is not very difficult to use so training was not very useful in my opinion. It did not also account for success events more complex than a click (which my company being ecommerce is looking to examine more than a mere click).
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Implementation Rating
Gossamer Threads Inc.
No answers on this topic
Optimizely
In retrospect: - I think I should have stressed more demo's / workshopping with the Optimizely team at the start. I felt too confident during demo stages, and when came time to actually start, I was a bit lost. (The answer is likely I should have had them on-hand for our first install.. they offered but I thought I was OK.) - Really getting an understanding / asking them prior to install of how to make it really work for checkout pages / one that uses dynamic content or user interaction to determine what the UI does. Could have saved some time by addressing this at the beginning, as some things we needed to create on our site for Optimizely to "use" as a trigger for the variation test. - Having a number of planned/hoped-for tests already in-hand before working with Optimizely team. Sharing those thoughts with them would likely have started conversations on additional things we needed to do to make them work (rather than figuring that out during the actual builds). Since I had development time available, I could have added more things to the baseline installation since my developers were already "looking under the hood" of the site.
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Alternatives Considered
Gossamer Threads Inc.
Given we are doing the work to improve in Google to a large degree - the Google product is essential. But GTMetrix may use their info as well as other independent stuff to be a little better. I appreciate the way GTMetrix provides the info - cleaner and clearer and thus quicker to address.
Read full review
Optimizely
None of them have a best in class stats engine and live within an ecosystem of marketing technology products the way that Optimizely does, so the scalability of using any one of those tools is limited as compared to using Optimizely Web Experimentation.
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Scalability
Gossamer Threads Inc.
No answers on this topic
Optimizely
It's incredibly flexible and adapts well to organizations of all sizes, whether you’re running a single site or managing multiple departments and platforms. The ability to deploy experiments seamlessly across different environments is a huge plus, especially for growing businesses. While it’s highly scalable, the last point would depend on the right team leveraging its full potential.
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Return on Investment
Gossamer Threads Inc.
  • It made my sites more stable.
  • I can fix my issues easily.
  • My site visitors increased with the help of this software.
Read full review
Optimizely
  • We're able to share definitive annualized revenue projections with our team, showing what would happen if we put a test into Production
  • Showing the results of a test on a new page or feature prior to full implementation on a site saves developer time (if a test proves the new element doesn't deliver a significant improvement.
  • Making a change via the WYSIWYG interface allows us to see multiple changes without developer intervention.
Read full review
ScreenShots

Optimizely Web Experimentation Screenshots

Screenshot of AI-Powered Experimentation with Opal:

- Instant Test Ideas: Generates high-quality A/B test ideas based on any goals and audience insights.
- Smarter Experimentation: The AI can suggest impactful variations, reducing guesswork and increasing test velocity.
- More Than Just Ideas: From hypothesis generation to analyzing results, Opal helps optimize every stage of the experimentation process.Screenshot of the Web Experimentation Visual Editor :

- Tweak experiments using the visual editor or dive into custom code when needed.
- Modify elements, update styling, or add dynamic behaviors.
- Ensure perfect variations while keeping control over every detail of the experiment.Screenshot of AI Content Suggestions:

- Generates copy variations to supercharge experiments.
- The AI suggests high-impact messaging for tests when hovering over a field.
- AI-powered content suggestions help skip the brainstorming process.Screenshot of Advanced Audience Targeting:

- Delivers personalized experiences by targeting users based on behaviors, attributes, and real-time conditions.
- Defines precise audience segments using first-party data, geolocation, and device type.
- Can test and optimize for different audience groups to maximize impact and engagement.Screenshot of Custom Templates in the Visual Editor:

- Offers pre-built templates for common test setups.
- Standardized variations and maintains brand integrity with reusable templates.
- Templates can be customized visually or tweak them with code for full flexibility.Screenshot of the Web Experimentation Results Page:

- Data visualizations help interpret experiment performance.
- Displays which variations are winning with built-in statistical significance calculations.
- Results can be filtered by audience segments, events, and conversions to uncover key trends.