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LIVEScreenshots on every screen size

Catch layout bugs
before clients do.

UICheck is a responsive design checker: test your website on multiple devices and browsers, from phones to desktops in Chrome, Safari and Firefox, and find overflow, spacing and cut-off text live.

5 free checks a day · no card neededSign in

/Fulgid StudioPRISM/DashboardSearch projects, issues, pages…⌘KN

FRIDAY, 30 OCTOBER

Good morning, Navin.

Your 4 sites average 87 — up 1 this week. 1 thing needs you today.

Paste an address to scan…All optionsScan

87

Workspace health

Last 30 days

↑ 1 points

5 fixed · 3 new problems

Needs you 1AllBlockingTo confirm

Blocks the releaseAcme Store · 9 h ago

Acme Store isn’t ready to ship

Score 65 · 1 critical, tested fixes ready

Fix first →Open report

Northwind, Bluebird and 1 more are fine — nothing needs you there

This week

13scans

5fixed

3new

M

T

W

T

F

S

S

Ready to launch

2 of 3 projects can go live today

Releases

Acme Store1 blocker

NorthwindReady

BluebirdReady

Monitoring

25 of 25 pages watched · next check in 6 h

All monitors

NorthwindWeekly · Tue 00:42Changed

Acme StoreDaily · 06:00Quiet

Product tour · 1:15

See UICheck in 75 seconds

From a URL to every layout bug, on every screen, with the fix. Then the follow-up until it’s really fixed.

WordPress
Next.js
React
Angular
Vue
Nuxt
Svelte
Astro
Gatsby
Remix
Shopify
WooCommerce
Webflow
Framer

Wix
Squarespace
Drupal
Joomla
Magento
Ghost
HubSpot
Laravel
Django
Ruby on Rails
Bootstrap
Tailwind CSS
Elementor
HTML

Works on every stack, because it checks the rendered page

For agencies, product teams and freelancers shipping sites every week.

Two ways to use UICheck

Check the site yourself.
Then let your client check it too.

One page checked on iPhone 17, iPad, a laptop and Full HD, with three problems marked on the screens

01 · Scan

Find every problem, on every screen

Real browsers at real sizes, the whole site, every width in between, and your Figma design.

Up to 7 screen sizes
Chrome, Safari, Firefox
Fix shown on the page

Run check How scanning works

A client’s comment pinned to a headline on the live site, with the page approved

02 · Website feedback

Feedback from clients, in the same place as the bugs

Comments on the page, sign-off, and a feedback button for the live site.

No account for clients
Pin, area, arrow or draw
Sign-off per page

Get client feedback How review canvases work

Find, fix and prove every layout bug

.

One check does what a tester spends an afternoon clicking through, then follows each problem until it’s fixed.

FIG 0.1

A layout that breaks at Laptop 1280 but is fine on iPhone 17

Find every problem

Real Chrome, Safari and Firefox at phone, tablet and desktop sizes, the whole site, and every width in between.

FIG 0.2

A finding with its fix sent to Linear, Jira, GitHub, Slack or Worksynk

Fix it where you work

Each problem with what to change and the CSS UICheck tested, sent to Linear, Jira, GitHub, Worksynk or Slack, or to your AI assistant.

FIG 0.3

The score gauge at 65 with the fix confirmed by a re-check

Prove it’s fixed

Mark it fixed or close the task: the page is checked again and the quality gate says whether it’s really gone.

1.0

QA built for teams that ship every week

From the first check to the client’s sign-off, every step happens on the page itself.

See all features

1

Check

UICheck scans every screen

2

Review

Problems pinned on the page

3

Comment

Your client says what to change

Sign-off

The client approves each page

Scanning fulgid.in…

iPhone 17402
iPad820
Laptop1280
Full HD1920

65Grade D · 3 foundNot ready to ship yet

Laptop · 1280 breaks here

1

Problem 1 of 14 on this page

Major · Layout

A blank area where content should be

iPhone 17iPadLaptopFull HD

2Menu font size is smallClient · / · Full HD · 9 h ago

OpenAssignPriority+ Create issue

NNavin Team 9 hMenu font size is small

Reply or @mention…

Open in canvas Resolve

Guests comment without an account

Release 3 · fulgid.in3 of 3 pages approved Approved

HomeMK
ServicesMK
ContactMK

Sign-off certificate ready

Review it like a prototype

The site on every device side by side, scrolled together. Click through it and every page you open is checked.

Every width, 320 to 1920px

The breakpoint sweep finds the layout that only breaks between 784 and 812px.

Clients comment on the page

Pins, areas and arrows where they mean it, plus sign-off when it’s right.

One list of what to fix

What UICheck found and what people wrote, with status, owner, priority and the tracker issue.

2.0

Everything a tester checks, on every screen

Each check covers layout, accessibility, forms and launch, and explains every finding in words your client understands.

See what it checks

A finding with the change that fixes it, and monitoring of the sites, with layout, accessibility and launch checks

Responsive layout

Sideways scrolling, cut-off text, overlaps, tight padding and tap targets too small to hit.

Accessibility

WCAG 2.2 with axe, keyboard use, contrast over pictures and the settings real users change.

Forms that work

Labels, required fields, and validation tried like a visitor, without ever sending anything.

Ready to go live

Broken links, noindex, staging links left in, missing titles, previews and favicons.

Real browsers

The same checks in Chrome, Safari and Firefox, so iPhone-only bugs don’t reach your client.

Fixes in plain words

What a visitor sees, why it matters and how to fix it, in PDF and Excel your client can read.

3.0

From URL to fixed, in three steps

No install and no scripts. A free account and an address is all it takes.

See how it works

01
Step 1
Paste a URL
Any live or staging site: WordPress, Next.js, Shopify or plain HTML. UICheck opens it in real browsers, waits for lazy images and fonts, and freezes animations so nothing moves mid-check.
- No install, no scripts in your code
- Password-protected staging works too
- Save it as a project to check it the same way every time
See how it works
02
Step 2
See every problem on the page
A score, a quality gate, and each finding outlined on the screenshot at the sizes it happens, grouped so one problem across seven sizes is one line, not seven.
- Worst first, with what to fix
- Since-last-check: fixed, new, still there
- Share a link or download PDF and Excel
Explore reports
03
Step 3
Fix it, and confirm it
Send findings to Linear, Jira, GitHub or Worksynk, or let your AI assistant fix them. When a fix is marked or a task closes, UICheck checks the page again and tells you.
- Before and now of the exact spot
- Re-checks that don’t use your daily checks
- Monitoring tells you if it ever comes back
Explore fix verification

4.0

Designed to make QA feel simple

The score, the gate, and what to fix first, the moment a check finishes.

Explore reports

www.fulgid.inFull site · 24 pages

Today 01:46 · 96 screens · All checks

OverviewIssues · 245ReviewVisual changes

✕ Not ready to shipQuality gate · re-scan of 30 Oct

Fix 1 critical problem on the Contact page first.

Everything else is above the bar: score 65 (needs 70), 3 pages already look good on every size. Since the last scan: 5 fixed, 5 new.

Fix the 1 critical firstOpen ReviewWhat changed

5 points to Grade C — fixing the critical and major problems gets you there

060708090100FDCBA65 · nowGrade DFix 61 major +25 → 90

Not ready to ship quality gate

70 to pass0100

65Grade D

Fix these firstAll 245

1Page is wider than the screenContact · phonesTested fix
2Form button does nothingContact · every size
3Text cut off in service cardsServices · phonesTested fix

Since last scan

5 fixed5 new

Score over the last 6 scans

A score and a quality gate

Pass or fail against your last check, the same answer in the app, the email and your CI.

Fix these first

The problems visitors notice most, worst first, each with the change to make.

Reports anyone can read

A share link without login, and PDF or Excel with your logo on Prism.

5.0

Every bug goes where your team works

Linear, Jira, GitHub, Worksynk and Slack, with the screenshot and the fix. Closed there means checked here, and your AI assistant can join in too.

See integrations

CriticaliPad · 820px

Part of the page sticks out past the screen edge

acme-store.com/chairs · div.promo

Tested on the page at 820px

.promo {
  max-width: 100%;
  box-sizing: border-box;
}

one click per bug

LinearIssue ENG-142 · screenshot attachedDone

JiraBug WEB-88 · in the client’s project

GitHubIssue #317 · with the fix

WorksynkTask · priority from severity

Slack#qa · report summary

Critical · iPad 820px

Part of the page sticks out past the screen edge

LinearIssue ENG-142 · screenshot attached
JiraBug WEB-88 · in the client’s project
GitHubIssue #317 · with the fix
WorksynkTask · priority from severity
Slack#qa · report summary

AI assistants (MCP)

7: screen sizes in one check
3: real browser engines
161: widths in the breakpoint sweep
86: WCAG 2.2 criteria mapped

6.0

Questions, answered

The short version. There’s more in the FAQ and the help pages.

See all questions

What does UICheck test?

UICheck loads your page on up to 7 screen sizes, from a 360px phone to Full HD, and checks for horizontal overflow, spacing and alignment problems, cut-off or tiny text, overlapping elements, small tap targets, form field issues, broken images, JavaScript errors and accessibility (WCAG) problems.

Is UICheck free?

Yes. A free account gets 5 checks every day on 5 common screen sizes, one saved project and checks from CI. No card is needed. Lens adds every screen size, Safari and Firefox, full-site checks, Figma comparison and visual baselines; Prism adds a team of 5, unlimited checks and the live site.

Does it work with WordPress, Next.js or Shopify?

Yes. UICheck tests the rendered page in a real browser, so it works with any platform or framework, including WordPress, Next.js, React, Angular, Shopify, Webflow and plain HTML.

Do I need to install anything?

No. Create a free account, paste a public URL and run the check in your browser. Teams can also run it from CI before every release.

Can I share results with my developer or client?

Yes. Make a report public with a private share link that works without an account, or download it as a PDF book or an Excel sheet with a screenshot of every issue.

Can my team use UICheck together?

Yes, on Prism: invite up to 5 people into one workspace (more for $10 a month each) and clients as free read-only viewers. Everyone shares the projects, checks and integrations, and the activity log shows who did what.

What if an issue is intentional?

Mark it as “by design” and UICheck stops counting it on that page in future checks. Mark real problems as fixed, or close their task in your tracker: UICheck checks the page again (on Lens and Prism right away, on Free with your next check), confirms the fix or flags it again, and emails you the result.

Catch layout bugs before your client does

Free account, 5 checks a day, no card. Upgrade when you need every screen, every browser and every page.

Start free See pricing