Visual regression testing that catches a broken layout before your customers do
Uptura screenshots your key pages after every deploy and compares them pixel by pixel against a known-good baseline — so a shifted button, missing image, or collapsed layout is flagged the moment it ships, not after a customer reports it.
example.com
4 pages · after deploy #512
Baseline
Current
- /0.0%
- /pricing0.0%
- /checkout4.2%
- /features0.0%
Why it matters
Your tests pass. Does your page still look right?
Most monitoring confirms a page loads and works. It says nothing about whether the layout is intact. Visual regression monitoring compares what the page actually renders against a baseline, so the visual bugs that slip past every other check get caught.
One line
of CSS breaks a page
A single stylesheet change can shift a layout site-wide. Nothing errors, no test fails — the page just looks wrong, and only a human eye or a visual diff catches it.
Green
tests, broken UI
Functional and unit tests can all pass while a button overlaps the price or an image fails to load. They check behavior, not what the page actually looks like.
Every deploy
is a visual risk
Content edits, dependency bumps, and third-party scripts all change how pages render. Without visual checks, you find out when a customer does.
What we monitor
Everything a visual regression tool should do
Uptura automates the screenshot-and-compare loop end to end — capturing baselines, diffing every run, and alerting you the moment a page stops looking the way it should.
Automated baseline screenshots
Uptura captures full-page screenshots of the URLs you care about and stores them as a baseline — so every future run has a known-good reference to compare against, no manual snapshots required.
Pixel-level visual diffs
Each run is compared against the baseline pixel by pixel, and any region that changed is highlighted — so a shifted button, broken layout, or missing image is impossible to miss.
Runs on every deploy or schedule
Trigger a visual check after each deployment or on a fixed schedule, so a CSS change or content edit that quietly breaks a page is caught the moment it ships, not weeks later.
Multi-viewport & responsive
Capture the same page at mobile, tablet, and desktop widths, so a layout that looks fine on your screen but collapses on a phone is flagged before a visitor ever sees it.
Ignore regions & smart thresholds
Mask out dynamic areas — timestamps, carousels, ads — and tune the diff sensitivity, so you catch real visual regressions without a flood of false positives.
Instant alerts on visual change
The moment a page differs from its baseline, your team is notified over email, Slack, or Discord — with the highlighted diff attached, so you can approve it or fix it fast.
How it works
Add a page, watch it around the clock
Visual regression testing should take a minute to set up. Give Uptura the pages and it captures the baseline, compares every run, and shows you exactly what changed.
- 1
Add the pages to watch
Point Uptura at the URLs that matter — your homepage, pricing, checkout, key landing pages — and pick the viewports you want captured. No scripts to write.
- 2
We capture and compare
On each deploy or schedule, Uptura takes fresh screenshots and diffs them against the baseline, highlighting every pixel that changed since the last known-good run.
- 3
You review and get alerted
When a page changes, you're alerted with the visual diff. Approve an intended change to set a new baseline, or fix a regression before your customers ever notice.
One platform
Visuals are just one signal Uptura watches
A pixel-perfect page doesn't help if the site is down, the certificate expired, or an API is failing. Uptura pairs visual regression monitoring with uptime, SSL, DNS, SEO, performance, and more — so every part of a website's health lives in one dashboard and one alert stream.
Uptime Monitoring
Minute-by-minute checks from multiple regions catch outages the instant they happen — before your customers do.
SSL & Domain
Track SSL certificate, issuer, and domain expiry across every site, with alerts well before anything lapses.
DNS Monitoring
Watch DNS records for unexpected changes, misconfigurations, and propagation issues in real time.
API & Endpoint
Test REST endpoints for status codes, latency, and JSON validity — and watch business-critical endpoints separately.
SEO Monitoring
Catch metadata, canonical, robots.txt, and sitemap regressions that quietly tank rankings — the moment they ship.
Core Web Vitals
Track LCP, CLS, and INP over time with Lighthouse scans, and get alerted when performance regresses.
Synthetic & Forms
Run scripted checks on logins, checkouts, and contact forms so broken user journeys never go unnoticed.
Accessibility
Continuous WCAG and Axe scans with historical reports, so accessibility regressions get caught — not shipped.
Plus everything else that keeps a website healthy
- Domain & WHOIS monitoring
- robots.txt monitoring
- Sitemap monitoring
- Broken link scanner
- Lighthouse scans
- Screenshot diffing
- Deployment comparison
- Email, Slack & Discord alerts
- Daily digests & PDF reports
FAQ
Visual regression testing, answered
What is visual regression testing?
Visual regression testing is the practice of capturing screenshots of your web pages and comparing them against a known-good baseline to catch unintended visual changes. Instead of manually clicking through a site after every deploy, a visual regression tool takes fresh screenshots, diffs them pixel by pixel, and flags anything that shifted — a broken layout, a missing image, an overlapping button — so you catch UI bugs that functional tests miss.
How is visual regression testing different from functional testing?
Functional tests confirm that a feature works — a button click fires, a form submits, an API returns the right data. They can all pass while the page looks completely broken: text overflowing, elements overlapping, a stylesheet failing to load. Visual regression testing checks what the page actually looks like, comparing rendered screenshots against a baseline. The two are complementary, and Uptura pairs visual checks with uptime, API, and synthetic monitoring in one place.
What are visual regression testing tools used for?
Visual regression testing tools automate the tedious job of eyeballing a site after every change. They capture screenshots across pages and screen sizes, store baselines, and highlight visual differences between runs so teams can review changes at a glance. That makes them ideal for catching CSS regressions, layout breakage, and accidental content changes before they reach production.
Does automated visual testing produce false positives?
It can, if every tiny rendering difference is treated as a failure. Uptura reduces noise with ignore regions — so dynamic content like timestamps, ads, or carousels doesn't trip a diff — and adjustable thresholds that let minor anti-aliasing differences pass while real layout changes are flagged. The goal is alerts you trust, not a wall of false alarms.
Can I run visual checks after every deployment?
Yes. Uptura can run a visual regression check on a schedule or triggered after each deploy, so a change that quietly breaks a page's layout is caught the moment it ships. You review the diff, approve intended changes to update the baseline, and get alerted on anything unexpected.
Is there a free visual regression testing tool?
Some open-source libraries and hosted tools offer limited free visual testing for a handful of screenshots. Uptura is launching screenshot-based visual regression monitoring as part of a complete website operations platform — join the waitlist for early access and founding-user pricing when it goes live.
Catch a broken layout before your customers do
Join the Uptura waitlist for early access to visual regression monitoring — and the rest of the website operations platform — plus founding-user pricing.
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