The Best Website Optimization Tools in 2026
We researched website optimization tools using vendors’ official websites, including pricing pages, plan tables, and product documentation. Rankings focus on the category’s core job, value for money, and verified features. Compare tools for improving website performance, search visibility, user experience, and conversion.
Our top picks
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Top ranked
Semrush#1 of 319.3/10Broad SEO research, tracking, auditing, and content tools, with a limited free plan.
Free plan · 7-day trial
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Runner-up
Ahrefs#2 of 319.2/10Broad SEO research and reporting, with a free plan and paid tiers from $29 per month.
Free plan
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Top-ranked free plan
Google Search Console#3 of 319.0/10Free search reporting and site-health diagnostics for verified website properties.
Free plan
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
The full ranking 31 tools, best first
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Best forTeams needing all-in-one SEO research and site optimization
Broad SEO research, tracking, auditing, and content tools, with a limited free plan.
- Site audit
Free plan · 7-day trial Our Semrush verdict → Visit SemrushFor vendors Sponsor this spot · #1 · $149/mo →9.3/10★★★★★Visit Semrush -
Best forSEO teams needing deep research and reporting
Broad SEO research and reporting, with a free plan and paid tiers from $29 per month.
- Site audit
9.2/10★★★★★Visit Ahrefs -
Best forFree search visibility and site-health monitoring
Free search reporting and site-health diagnostics for verified website properties.
- Site audit
9.0/10★★★★☆Visit site -
Best forTechnical SEO crawling and detailed site audits
A desktop crawler for detailed technical SEO audits, with a free 500-URL tier.
- Site audit
8.9/10★★★★☆Visit Screaming Frog -
Best forTeams optimizing pages through experimentation
A broad experimentation toolkit for teams testing web and product experiences.
8.8/10★★★★☆Visit Optimizely -
Best forFree heatmaps and visitor-session insights
A free way to explore website and app behavior through recordings, heatmaps, and AI insights.
8.7/10★★★★☆Visit site -
Best forConversion teams seeking heatmaps and recordings
A broad behavior-analysis toolkit, with a free plan and paid tiers starting at $29 per month billed annually.
8.6/10★★★★☆Visit Crazy Egg -
Best forTeams monitoring uptime and website speed
Tracks uptime, page speed, transactions, and real-user experience with configurable alerts.
8.5/10★★★★☆Visit Pingdom -
Best forTeams running web and mobile experiments
Broad experimentation coverage, with contact-sales pricing and no free plan.
8.4/10★★★★☆Visit Wingify -
Best forEnterprise teams running cross-platform experiments
A broad experimentation toolkit for teams coordinating web, mobile and server-side tests.
8.3/10★★★★☆Visit Wingify -
Best forTeams analyzing digital journeys and conversions
A broad analytics suite for tracing digital behavior from session replay to revenue attribution.
8.2/10★★★★☆Visit Contentsquare -
Best forEnterprise teams auditing large, complex websites
A broad SEO platform for complex sites, with pricing available through sales.
- Site audit
8.1/10★★★★☆Visit Botify -
Best forMid-market and enterprise site quality teams
Lumar automates technical SEO audits, site monitoring, and quality checks for larger teams.
- Site audit
8.0/10★★★★☆Visit Lumar -
Best forTechnical SEO teams combining crawls and log data
Pairs technical crawls with bot-log and search data for complex-site SEO teams.
- Site audit
7.9/10★★★★☆Visit Oncrawl -
Best forProduct teams investigating web and app behavior
Connect session replay, maps, and funnels to investigate digital behavior.
7.8/10★★★★☆Visit Fullstory -
Best forTeams investigating website behavior and friction
A focused toolkit for tracing visitor behavior from clicks to conversion friction.
7.7/10★★★★☆Visit Mouseflow -
Best forTeams assessing journeys before September 30, 2027
A broad journey-analysis toolkit, but its scheduled shutdown makes it a short-term choice.
7.6/10★★★★☆Visit Smartlook -
Best forMid-market teams needing experimentation controls
A broad experimentation toolkit, with PBX Starter starting at $495 per month.
7.5/10★★★★☆Visit Kameleoon -
Best forSmall teams managing multiple websites
A broad SEO workflow for agencies, with a paid entry point and no free plan.
- Site audit
7.4/10★★★★☆Visit Sitechecker -
Best forSEO practitioners focused on crawl audits
A technical SEO crawler with JavaScript rendering, prioritized hints, and audit comparisons.
- Site audit
7.3/10★★★★☆Visit Sitebulb -
Best forSmall businesses improving conversion journeys
A broad conversion toolkit for teams tracing visitor behavior across a website.
7.2/10★★★★☆Visit Lucky Orange -
Best forTeams analyzing visitor behavior and testing changes
Combines replay, heatmaps, funnels, and A/B testing, with paid plans from $39/month.
7.1/10★★★★☆Visit Inspectlet -
Best forEnterprises needing digital experience diagnostics
Glassbox connects web and mobile behavior analysis with replay, funnels, and deployment flexibility.
7.0/10★★★★☆Visit Glassbox -
Best forSEO teams measuring page and content changes
A focused toolkit for measuring SEO changes with tests, traffic, and ranking analysis.
6.9/10★★★☆☆Visit SEOTesting -
Best forTeams tracking Core Web Vitals over time
Tracks synthetic and real-user performance, with testing and alerts from $90 per month.
6.8/10★★★☆☆Visit SpeedCurve -
Best forDevelopers running free performance and SEO audits
A free, developer-oriented way to audit page performance, accessibility, SEO, and practices.
6.7/10★★★☆☆Visit Lighthouse -
Best forTeams testing page speed across browsers and locations
A focused tool for investigating page speed with browser, location, and request-level tests.
6.6/10★★★☆☆Visit WebPageTest -
Best forTeams tracking website page performance
Chrome-based performance reports with monitoring, alerts, and historical trends.
6.5/10★★★☆☆Visit GTmetrix -
Best forTeams monitoring speed and Core Web Vitals
Performance monitoring pairs synthetic tests with real-user Core Web Vitals and diagnostics.
- Page speed monitoring
- Site audit
6.4/10★★★☆☆Visit DebugBear -
Best forTeams running web and mobile experiments
Flexible web and mobile experiments, from visual A/B tests to server-side feature flags.
6.3/10★★★☆☆Visit Convert -
Best forTeams remediating accessible PDF documents
A cloud tool for finding and remediating accessibility issues in PDF documents.
6.1/10★★★☆☆Visit Siteimprove
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Score |
|---|---|---|---|---|
| 1 | Semrush | Yes | 9.3 | |
| 2 | Ahrefs | Yes | $29/mo | 9.2 |
| 3 | Google Search Console | Yes | Free | 9.0 |
| 4 | Screaming Frog SEO Spider | Yes | 8.9 | |
| 5 | Optimizely Experimentation | Yes | 8.8 | |
| 6 | Microsoft Clarity | Yes | Free | 8.7 |
| 7 | Crazy Egg | Yes | $29/mo | 8.6 |
| 8 | Pingdom | No | 8.5 | |
| 9 | VWO Testing | No | 8.4 | |
| 10 | AB Tasty | 8.3 | ||
| 11 | Contentsquare | Yes | 8.2 | |
| 12 | Botify | 8.1 | ||
| 13 | Lumar | 8.0 | ||
| 14 | Oncrawl | 7.9 | ||
| 15 | Fullstory | Yes | 7.8 | |
| 16 | Mouseflow | Yes | 7.7 | |
| 17 | Smartlook | Yes | 7.6 | |
| 18 | Kameleoon | No | $495/mo | 7.5 |
| 19 | Sitechecker | No | 7.4 | |
| 20 | Sitebulb | No | 7.3 | |
| 21 | Lucky Orange | No | $32/mo | 7.2 |
| 22 | Inspectlet | Yes | $39/mo | 7.1 |
| 23 | Glassbox | 7.0 | ||
| 24 | SEOTesting | No | 6.9 | |
| 25 | SpeedCurve | No | $90/mo | 6.8 |
| 26 | Lighthouse | Free | 6.7 | |
| 27 | WebPageTest | Yes | 6.6 | |
| 28 | GTmetrix | No | 6.5 | |
| 29 | DebugBear | No | 6.4 | |
| 30 | Convert Experiences | No | 6.3 | |
| 31 | Siteimprove PDF Remediation Agent | 6.1 |
Head-to-head All 21 comparisons →
- Semrush vs Optimizely Experimentation
- Semrush vs Microsoft Clarity
- Semrush vs Crazy Egg
- Semrush vs Pingdom
- Ahrefs vs Optimizely Experimentation
- Ahrefs vs Microsoft Clarity
- Ahrefs vs Crazy Egg
- Ahrefs vs Pingdom
- Google Search Console vs Optimizely Experimentation
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How we rank website optimization tools
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update