Best pre-launch website testing tools for AI-built sites (2026)
A site made with an AI builder needs several different checks before you share it, and no one tool does them all: whether the main journey works, how it fits on a phone, how fast and accessible it is, how it behaves on real devices, and whether its data is protected. This roundup lists nine tools, grouped by the question each answers, with a one-line “best for”, pricing, free tier and where it falls short. We make Sybqa, which is one of the nine; we say where it is not the right choice.
Facts checked
How to read this list
The tools are grouped by the question they answer, because a pre-launch check is several jobs. The order on the page is a grouping, not a ranking. A browser-level tool cannot prove that database rules or payment handling are correct, so the security group matters as much as the journey group for a site with accounts or data. We have not run these products head to head and make no claim about which finds more.
Best for: Checking an app while you are still changing it, from inside the builder that made it.
Lovable’s documentation describes browser testing (the agent navigates pages, clicks controls, fills forms and captures screenshots, console and network activity), frontend tests with Vitest and React Testing Library, and direct calls and Deno tests for edge functions. It also includes a Quick security scan that runs automatically on every publish, covering database access rules, dependency vulnerabilities and unauthenticated MCP servers, and a Deep scan of application code.
Look elsewhere if: you want an independent check of the published URL from outside the builder. Lovable’s own security page says its scans do not replace a thorough security review.
Does it work and does it fit?
Sybqa (we make this)
Best for: An independent first check of a published site when you have no tests: journeys, phone-width layout, accessibility rules and page errors in one report.
Paste a link and review the plan; a real browser works through the journeys at desktop (1440 px), phone (390 px) and narrow (320 px) widths and reports findings with screenshots and steps to reproduce. Blocked and not-run checks are never counted as passed. The free plan gives 10 runs a month after sign-up without AI review, and a GitHub Action can re-run a saved plan on each deploy.
Not the right choice if: you need to prove database rules, permissions or payment handling are correct, native mobile app testing, performance scores, or a test suite you own and can export.
Playwright
Best for: Developers who want to record the key journeys as tests they keep in the repository.
Playwright’s codegen opens a browser and the Playwright Inspector and generates test code from what you do, in Chromium, WebKit or Firefox. The framework is open source, runs on any CI provider and has Test Agents that plan, generate and repair tests with your AI tool of choice.
Look elsewhere if: nobody will keep the tests healthy: recorded tests are code you own, review and update when the app changes.
Is it fast and accessible?
Lighthouse and PageSpeed Insights
Best for: Performance, best-practice, SEO and accessibility scores for the public pages you will share.
Lighthouse is an open-source tool that audits a URL from Chrome DevTools, the command line or a Node module. PageSpeed Insights reports one URL on mobile and desktop with Lighthouse lab data and, where there is enough traffic, real-user field data. Lighthouse CI can fail a pull request on a performance budget.
Look elsewhere if: you need to know whether signup or checkout works: a standard run loads a URL and audits it, and its accessibility audit leaves manual checks to a person.
axe DevTools (free extension)
Best for: A quick page-by-page accessibility check in your own browser before launch.
Deque offers a free browser extension for basic automated accessibility testing on a page-by-page basis, built on the open-source axe-core engine. Paid tiers add AI-enhanced features, guided manual tests, user-flow analysis and CI/CD integration, with a Pro free trial that needs no payment details.
Look elsewhere if: you want journeys, layout and accessibility together in one report, or a site-wide scan: the free extension checks one page at a time.
Does it work on real devices and browsers?
BrowserStack Live
Best for: A person looking at the site on real phones and desktop browsers before launch.
BrowserStack Live gives interactive access to real desktop browsers and real mobile devices, including testing of localhost and staging sites. Single-user plans are $29 a month for desktop and $39 a month for desktop and mobile, both billed annually; Team is $150 a month billed annually, and a free trial is offered.
Look elsewhere if: you want an automated report: Live is a manual, interactive session, so a person has to look and judge.
Is the data protected?
OWASP ZAP
Best for: A free, open-source security scan of a running web app, including in CI.
ZAP (Zed Attack Proxy) describes itself as free and open source, an independent project that its site brands as ZAP by Checkmarx. Its automation docs list a quick reconnaissance scan, command line, Docker-packaged scans, GitHub Actions, an Automation Framework and an API.
Look elsewhere if: you want journeys, layout or accessibility checked: it tests security only, and findings need someone able to judge them.
Supabase Security Advisor
Best for: Apps whose backend is a Supabase project, to catch missing or permissive row-level security.
Supabase’s advisors run from the Studio dashboard, an MCP tool, the CLI (supabase db advisors) or the Management API. Its checks include tables in the public schema with row-level security disabled, RLS enabled with no policy, permissive RLS policies and exposed auth users. The page notes some findings may be intentional.
Look elsewhere if: your backend is not on Supabase, or you want the app’s behaviour tested: it reviews database configuration, not what a visitor can do in a browser.
Will you know if it breaks after launch?
Checkly
Best for: Watching the signup or checkout flow in production on a schedule, with alerts.
Checkly runs Playwright browser checks and API checks on a schedule and alerts you when they fail. The free plan includes 1,000 browser check runs and 10,000 API check runs a month and is hard-capped; Starter is $24 and Team is $64 a month on annual billing. Checks are managed as code with its CLI, Terraform or Pulumi.
Look elsewhere if: you want a one-off look before launch: the checks are scripts you write and then keep running.
The tools side by side
Nine pre-launch testing tools for AI-built sites compared on the points each publishes
Tool
Best for
Pricing model
Free tier
AI / agentic
CI support
Where it falls short
Lovable testing and security scans
Checks while building, inside the builder
Part of Lovable; no separate price on the pages read
Not stated on the pages read
The builder’s agent runs browser testing; AI penetration testing via an optional Aikido connector
None described; scans run on publish and on demand
Not independent of the builder; does not replace a security review
Sybqa (ours)
An independent check of the published site
A free plan, then a paid plan with AI credits
Yes: 10 runs a month after sign-up, no AI review
AI review of findings on the paid plan
GitHub Action and API tokens
No proof of database rules or payments; no performance scores or native mobile
Playwright
Recorded journeys as tests you keep
Open source
Free
Planner, generator and healer agents through your AI tool
Any CI provider
You write and maintain the tests
Lighthouse and PageSpeed Insights
Performance, SEO and accessibility scores
Open source; PageSpeed Insights price not stated
Free to run Lighthouse
None listed
Lighthouse CI
Does not test journeys; manual accessibility checks left to you
axe DevTools (free extension)
A quick page-by-page accessibility check
Free extension; paid tiers via trial or sales
Yes: free extension
AI-enhanced features on paid tiers
CI/CD integration in the Bundle
One page at a time
BrowserStack Live
Looking at real phones and browsers
$29 or $39 a month single user, billed annually; Team $150
Free trial offered
None listed for Live
Interactive; Jira, Slack and GitHub integrations on Team
Manual: a person has to look and judge
OWASP ZAP
A free security scan of a running app
Free and open source
Free
None listed
GitHub Actions and Docker-packaged scans
Security only; findings need judgement
Supabase Security Advisor
RLS and database configuration checks
Part of Supabase; no separate price on the page
Not stated on the page
None listed
CLI and Management API
Supabase only; configuration, not behaviour
Checkly
Watching production on a schedule
Free, Starter $24, Team $64 a month on annual billing
Yes: 1,000 browser check runs a month, hard-capped
AI root cause analysis of failed checks
CLI, Terraform and Pulumi
Scripts you write; not a one-off check
Which ones to use
Choose Sybqa if
You want an independent check of the published URL, from outside the builder that made it.
You want phone-width layout, accessibility rules and the main journey in one report you can hand to a developer or client.
You want to start free and review a plan before anything runs.
Look elsewhere if
You need to know that one user cannot read another user’s data: the builder’s security scans, Supabase’s advisors or ZAP, then a review of your access rules.
You need performance scores: Lighthouse or PageSpeed Insights.
You want a person to see the site on real phones: BrowserStack Live.
A sensible minimum for a site with accounts is one journey check, a performance and accessibility pass, and a review of database and API access rules. For how the kinds of testing software differ, see the guide to web application testing tools.
What this roundup does not claim
We read each vendor’s public documentation or pricing page on the date shown under Sources. We have not run these tools, so there are no rankings and no measured detection or speed figures, and vendor statements about coverage are not repeated. None of these tools, Sybqa included, can guarantee that a site is secure, accessible or free of bugs; a report shows what was observed in that run.
Common questions
What should I test before launching an AI-built website?
Test the one journey the site exists for, in a fresh browser at phone width; check performance and accessibility on the public pages; look at the site on real devices; and review database and API access rules separately, because a browser check cannot prove who can read whose data. The groups above map to those checks.
Is the AI builder’s own testing enough?
It is a good first layer, run while you build, but it is run from inside the builder and, per Lovable’s own documentation, its security scans do not replace a thorough security review. A fresh pass on the published URL from outside adds independent evidence of what a visitor sees and can do.
Which of these tools are free?
Playwright, Lighthouse, OWASP ZAP and the free axe DevTools extension are free to use. Checkly has a free plan with 1,000 browser check runs a month, BrowserStack Live offers a free trial, and Sybqa’s free plan gives 10 runs a month after sign-up, without AI review.