The best GTmetrix alternative depends on what pushed you away in the first place. If the free plan is the problem, WebPageTest Starter gives you 150 test runs per month at no cost, against GTmetrix Basic's 5 tests per month for three months (GTmetrix, August 2026). If you want field data straight from Google, PageSpeed Insights is free and uncapped. And if you want to know whether a slow page is also an exposed page, FortifyNet checks performance next to SSL/TLS, DNS, email authentication and security headers in one 60-second scan.
Below is an honest comparison of six options, with current prices and limits taken from each vendor's own pricing page in August 2026.
Why people start looking for a GTmetrix alternative
GTmetrix is still a good tool. It is the free tier that changed. A GTmetrix Basic account today gets 5 On-Demand tests per month for three months, testing from two locations (Seattle and London), with one month of monitoring history (GTmetrix free plan features).
That is enough to look at a page once. It is not enough to iterate: change a setting, retest, compare, retest again. A single afternoon of optimisation work can burn a month's allowance.
The paid tiers are reasonably priced but tightly scoped at the bottom. The entry Lite plan is $5.99/month billed monthly, or $59.90 billed yearly, and it includes 50 On-Demand tests, 1 monitored slot, 5 test locations and just 1 month of data retention. You need the Advanced plan at $29.99/month (or $299.90/year) before you get unlimited on-demand tests, hourly monitoring, 10 monitored slots and 25 locations (GTmetrix pricing, August 2026).
If you manage more than one site, or you want a year of history to prove a regression to a client, that is where the search for an alternative usually starts.
What actually matters when you compare speed tools
Before the table, three things worth being clear about.
Lab data and field data are not the same thing. A GTmetrix or WebPageTest run is lab data: one synthetic load, from one machine, on one connection. Google's Core Web Vitals assessment uses field data, real visits from real Chrome users, evaluated at the 75th percentile. A tool can show you a beautiful lab score while your actual users are failing.
The 2026 thresholds are unchanged. To pass Core Web Vitals a page needs LCP under 2.5 seconds, INP under 200 milliseconds and CLS under 0.1, each at the 75th percentile of real users. Poor starts at LCP over 4 seconds, INP over 500 milliseconds and CLS over 0.25 (web.dev). INP replaced FID as the responsiveness metric, so any tool still reporting FID as a Core Web Vital is out of date.
Retention is the sleeper feature. Scores are easy to get. Proving that last Tuesday's deploy is what slowed the page down requires history. This is exactly where free tiers differ most.
The 6 best GTmetrix alternatives compared
| Tool | Free tier | Paid from | Free test locations | Data retention (free) | Field data (CrUX) |
|---|---|---|---|---|---|
| WebPageTest (Catchpoint) | 150 test runs/mo | $180/yr (1,000 runs/mo) | 30 worldwide | 60 days | No |
| Google PageSpeed Insights | Unlimited, no account | Free | Google infrastructure | Not stored | Yes |
| FortifyNet | Full 60-second audit | Freemium | Global | Scan history in account | Partial |
| Pingdom (SolarWinds) | None, 14-day trial | ~$15/mo synthetic | Paid only | Paid only | No |
| DebugBear | None, 14-day trial | Paid only | Paid only | Paid only | Yes |
| Chrome DevTools / Lighthouse | Unlimited, local | Free | Your own machine | Not stored | No |
| GTmetrix (for reference) | 5 tests/mo for 3 mo | $5.99/mo | 2 (Seattle, London) | 1 month | Yes, 1-month CrUX |
Sources: vendor pricing pages, August 2026. Pingdom and DebugBear entry prices vary between resellers and are quoted as approximate.
1. WebPageTest, the closest like-for-like swap
If you liked GTmetrix's waterfall charts and filmstrips, WebPageTest is the natural move. The free Starter plan includes 150 test runs per month, 30 global test locations, filmstrip and video capture, Lighthouse, the Opportunities report and 60 days of test history (Catchpoint pricing).
WebPageTest Pro starts at $180/year for 1,000 runs per month and adds scheduled tests, alerts, the API, private tests, bulk testing, 35 locations including mainland China, up to 5 team seats and 13 months of retention. Note that a "test run" is a single page load, so a test with first and repeat views counts as two.
Best for: developers who want depth, and anyone whose main complaint about GTmetrix was the test allowance.
2. Google PageSpeed Insights, the free authority
PageSpeed Insights is the only tool on this list that shows you the exact field data Google uses for the Core Web Vitals assessment, drawn from the Chrome User Experience Report. It is free, uncapped and needs no account.
The trade-off is that it stores nothing. There is no history, no monitoring, no alerts, no comparison between two runs. Use it as the referee, not the workbench. We cover this in more depth in our Google PageSpeed alternatives comparison.
Best for: confirming whether Google thinks your page passes.
3. FortifyNet, when speed is only half the question
Most speed tools answer "is this page fast?" and stop. A slow page is often a symptom of something else: an expired or misconfigured certificate adding handshake delays, DNS that resolves slowly, third-party scripts nobody audited, missing compression.
FortifyNet's free 60-second scan runs performance checks alongside SSL/TLS configuration, DNS records, email authentication (SPF, DKIM and DMARC), HTTP security headers and dark-web exposure for your domain, then gives you one prioritised list. If you are the only technical person at a small company, one report beats five tabs.
Best for: site owners who want the performance and security picture together rather than a specialist speed lab.
4. Pingdom, for uptime plus speed
Pingdom's strength was never really page analysis, it is availability monitoring: is the site up, from where, and who gets paged. SolarWinds retired the free tier, so you now start with a 14-day trial, and synthetic monitoring plans begin around $15/month and scale with the number of checks.
Best for: teams whose real requirement is uptime alerting, with speed as a bonus.
5. DebugBear, for continuous Core Web Vitals
DebugBear is a specialist: scheduled synthetic tests plus real user monitoring, built specifically around Core Web Vitals and Lighthouse trends. There is no free tier, only a 14-day trial, and the entry plan is limited to a single project, which matters if you are an agency.
Best for: performance engineers who need field and lab data in one dashboard and have budget for it.
6. Chrome DevTools and Lighthouse CLI, free and local
The tool already on your machine. Open DevTools, run a Lighthouse audit, and you get the same engine PageSpeed Insights uses in its lab section, with unlimited runs and no queue. For automation, the Lighthouse CLI runs from npm as npx lighthouse and outputs JSON or HTML you can commit to a repo.
The catch: it tests from your machine, on your connection, with your extensions. Results are not comparable to a clean cloud test unless you are careful.
Best for: developers iterating locally before running a public test.
Free-tier limits, side by side
Free monthly test allowances, August 2026. PageSpeed Insights and local Lighthouse runs are uncapped and are excluded from the chart.
How to switch without losing your baseline
- Export what you have. Before your GTmetrix retention window closes, screenshot or export the reports you might need as evidence later. On Basic, history is short.
- Record a reference run. Test your three most important pages in the new tool on the same day, same location, same connection setting. That becomes your new baseline.
- Match the analysis options. A GTmetrix score taken from London on a throttled connection will not match a WebPageTest run from Dulles on cable. Fix location, device and throttling before comparing anything.
- Check the field data separately. Run PageSpeed Insights on the same URLs and note the 75th-percentile LCP, INP and CLS. Lab numbers guide your work, field numbers decide whether you pass.
- Set up monitoring on one page first. Most free tiers allow a single monitored page. Pick the highest-traffic entry page rather than the homepage if they differ.
Which one should you pick?
- Want the closest replacement with a generous free tier: WebPageTest.
- Want to know if Google thinks you pass: PageSpeed Insights.
- Want performance and security in one report: FortifyNet.
- Want alerts when the site goes down: Pingdom.
- Want continuous Core Web Vitals with real user data: DebugBear.
- Want to iterate locally at zero cost: Chrome DevTools.
For most small businesses, the practical answer is a pair: WebPageTest or FortifyNet for the working audit, and PageSpeed Insights as the final check against Google's own field data.
FAQ
Is GTmetrix still free in 2026?
There is still a free GTmetrix Basic account, but it is limited to 5 On-Demand tests per month for three months, two test locations and one month of data retention. It is a trial in practice rather than an ongoing free tier.
Which GTmetrix alternative is the most accurate?
No lab tool is definitive, because lab tests are single synthetic loads. For the numbers Google actually uses in ranking, PageSpeed Insights field data (or Search Console's Core Web Vitals report) is authoritative. Lab tools are for diagnosis, not verdicts.
Why does my GTmetrix grade differ from my PageSpeed score?
Because they weight different metrics and test from different places under different network conditions. Chasing identical numbers across tools is wasted effort. Pick one lab tool, keep its settings constant, and track the trend.
Can a slow site hurt my search rankings?
Core Web Vitals are part of Google's page experience signals, assessed on field data at the 75th percentile. They are one input among many, not a switch. A page that fails badly is at a disadvantage; a page that passes comfortably gains no special boost.
Do security issues affect page speed?
They can. Misconfigured TLS, redirect chains from HTTP to HTTPS to www, slow DNS resolution and unaudited third-party scripts all add real milliseconds before your content starts rendering.
Check speed and security in the same scan
A fast site that leaks email through a missing DMARC record is still a liability. FortifyNet's free scan takes about 60 seconds, needs no account and covers SSL/TLS, DNS, SPF, DKIM, DMARC, HTTP security headers, dark-web exposure and performance in one prioritised report.
Run your free FortifyNet scan and see the whole picture, not just the speed number.
Related guides
- Best Google PageSpeed alternatives in 2026
- Core Web Vitals 2026: what you need to know for your Google ranking
- Website security checklist: 12 essential steps for 2026
Originally published at fortifynet.com/blog/gtmetrix-alternative. I'm the founder of FortifyNet, a website security scanner; this article comes from our blog, so factor in that founder bias when you read any tool recommendations here.
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