Contentsquare
by Contentsquare Free plan AndroidiPhone & iPadWebBrowser extensionAPI
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Best Website Optimization Tools 2026
Facts read 27 Sep 2026 – 15 Oct 2026
Use website optimization tools to review site performance, understand visitor behavior, assess search visibility and run experiments. This guide helps site owners and teams compare the capabilities and access terms that fit their work.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 Contentsquare | 5.7 | Free plan | Free plan | Android, iPhone & iPad, Web, Browser extension | 14 Oct 2026 | |
| 02 Fullstory | Fullstory suits teams analyzing behavior across web and mobile products using replay, heatmaps, and journey analytics. | 5.6 | Free plan | Free plan | Android, iPhone & iPad, Web, Browser extension | 15 Oct 2026 |
| 03 Screaming Frog SEO Spider | The maker describes SEO Spider as designed for experienced SEOs and used by professional SEOs, agencies, and brands for technical SEO audits. | 5.6 | Free plan | Free plan | Windows, Mac, Linux, API | 15 Oct 2026 |
| 04 GTmetrix | GTmetrix suits developers, marketers, agencies, hobbyists, small businesses, and enterprises monitoring site speed. | 5.5 | $4.99 a month, billed yearly | Free plan | Web, API | 11 Oct 2026 |
| 05 Pingdom | Pingdom is aimed at digital marketers, web hosting providers, and web developers who need uptime or performance monitoring. | 5.5 | $16.50 a month, billed yearly | Free trial | Android, iPhone & iPad, Web, Browser extension | 15 Oct 2026 |
| 06 Crazy Egg | It suits website owners, growth marketers, agencies, ecommerce companies, and UX/UI designers who want to review visitor behavior. | 5.4 | $348 a year | Free plan | Web, Browser extension, API | 28 Sep 2026 |
| 07 Ahrefs | It suits people and teams working on SEO research, site audits, backlinks or competitor analysis. | 5.1 | $29 a month | Free plan | Web, API | 27 Sep 2026 |
| 08 Inspectlet | Inspectlet suits teams that need session replays, heatmaps, behavioral analysis, and website optimization tools. | 5.1 | $39 a month | Free plan | Web | 28 Sep 2026 |
| 09 Lighthouse | Lighthouse suits web developers who want to audit performance, accessibility, SEO and other page-quality areas. | 5.0 | Free plan | Free plan | Web, Windows, Mac, Linux | 11 Oct 2026 |
| 10 Sitebulb | 5.0 | — | Free trial | Web, Windows, Mac, Browser extension | 15 Oct 2026 |
Review free-plan availability, starting paid prices, optimization focus, site audits, A/B testing, page speed monitoring and tracked-site limits. The list also shows whether each tool supports web, API, iOS, Android, extensions or self-hosted setups.
02
Fullstory
Fullstory suits teams analyzing behavior across web and mobile products using replay, heatmaps, and journey analytics.
AndroidiPhone & iPadWeb+2 Record5.6 Visit
03
Screaming Frog SEO Spider
The maker describes SEO Spider as designed for experienced SEOs and used by professional SEOs, agencies, and brands for technical SEO audits.
WindowsMacLinux+2 Record5.6 Visit
04
GTmetrix
GTmetrix suits developers, marketers, agencies, hobbyists, small businesses, and enterprises monitoring site speed.
WebAPI Record5.5 Visit
05
Pingdom
Pingdom is aimed at digital marketers, web hosting providers, and web developers who need uptime or performance monitoring.
AndroidiPhone & iPadWeb+2 Record5.5 Visit
6
Crazy Egg
WebBrowser extensionAPI $348 a year Record5.4 Visit It suits website owners, growth marketers, agencies, ecommerce companies, and UX/UI designers who want to review visitor behavior.
7
Ahrefs
WebAPI $29 a month Record5.1 Visit It suits people and teams working on SEO research, site audits, backlinks or competitor analysis.
8
Inspectlet
Web $39 a month Record5.1 Visit Inspectlet suits teams that need session replays, heatmaps, behavioral analysis, and website optimization tools.
9
Lighthouse
WebWindowsMac+3 Free plan Record5.0 Visit Lighthouse suits web developers who want to audit performance, accessibility, SEO and other page-quality areas.
11
Smartlook
AndroidiPhone & iPadWeb+1 Free plan Record5.0 Visit Smartlook may suit teams seeking recordings and event analytics for web or mobile products, particularly those using funnels, heatmaps, or crash reports.
12
AB Tasty
AndroidiPhone & iPadWeb+4 €15,000 a year Record4.9 Visit Growth is described for small teams starting experimentation, Pro for businesses scaling it, and Enterprise for large teams, agencies, and enterprises with advanced…
13
Convert Experiences
AndroidiPhone & iPadWeb+1 $399 a month Record4.9 Visit Convert Experiences is aimed at growth and marketing teams, CRO agencies, developers, and web managers in ecommerce stores.
14
Kameleoon
AndroidiPhone & iPadWeb+1 $495 a month Record4.9 Visit Kameleoon suits marketing, product, and engineering teams that need to run experiments across web, back-end, and mobile experiences.
18
Microsoft Clarity
AndroidiPhone & iPadBrowser extension Free plan Record4.7 Visit Clarity may suit teams analyzing website or app interactions, including those seeking heatmaps, recordings, or mobile SDK support.
19
Google Search Console
WebAPI Free plan Record4.4 Visit Search Console suits business owners, SEO specialists and marketers, site administrators, and web developers who manage a site's Google Search presence.
20
VWO Testing
AndroidiPhone & iPadWeb+2 — Record4.4 Visit It suits teams running experiments across web and mobile products, from small teams to large enterprises and agencies.
21
Glassbox
AndroidiPhone & iPadWeb+2 — Record4.2 Visit Glassbox is aimed at production operations, marketing or business, and product teams examining digital experiences.
Before you choose
Check free access and pricing
Check whether each tool offers a free plan or requires payment. Review trial access before committing.
Pricing details can differ. Convert Experiences offers a 15-day trial; DebugBear offers a 14-day trial; and Fullstory combines a free plan with a 14-day trial. AB Tasty provides pricing on request.
Match the platform to your workflow
Tools on this list run through web apps, APIs, iOS, Android, browser extensions or self-hosted deployments. Choose a delivery method that fits how your team works and where your site data can be handled.
Identify the work you need to measure
Use the optimization focus field to narrow the list to the type of work you need. Site audits, A/B tests and page-speed monitoring appear as distinct comparison fields.
A tool can suit search checks, experiment analysis or speed review depending on the capabilities shown for it.
Review site coverage
Tracked sites is a comparison field for this category. Check the value shown for a tool against the number of sites or properties you need to monitor.
Google Search Console includes a free plan, while GTmetrix includes both a free plan and a free trial.
Questions
Are free plans available for these tools?
Check each listing for free-plan availability. Google Search Console and Fullstory include free plans, and GTmetrix also lists one.
Is trial access available before purchase?
Review each listing for trial access. Convert Experiences offers 15 days, DebugBear 14 days, and Fullstory pairs its free plan with a 14-day trial.
Which platforms are supported?
The listed deployment options cover web, API, iOS, Android, browser extensions and self-hosted environments.
Which details can I compare?
You can compare free-plan availability, starting paid prices, optimization focus, site audits, A/B testing, page-speed monitoring and tracked-site coverage.
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