UICheck · Website QA & responsive testing

CATCH LAYOUT BUGSBEFORE CLIENTS DO.

A website QA tool: test your site on every screen size in Chrome, Safari and Firefox, and get each layout bug with a fix.

Try UICheck free Talk to us

5 free checks a day · no card needed

uicheck.app

UICheck issue list with severity, owner and Linear ticket

Layout issues found

Fixed & re-checked

390px · quality gate passed

7 screens at once

Chrome · Safari · Firefox

01 · What it does

Built by Fulgid. Used on our own projects.

UICheck is a responsive design checker. Paste a URL and it opens the page in real Chrome, Safari and Firefox at phone, tablet and desktop sizes — and every width from 320 to 1920px — finding overflow, cut-off text, tight spacing and accessibility issues. Each problem comes with what to change, goes to your tracker, and is checked again until it's really fixed.

Made for: Agencies, product teams and freelancers shipping sites every week.

01
Find every problem
Real Chrome, Safari and Firefox at phone, tablet and desktop sizes, the whole site, and every width in between.
02
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.
03
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.
04
Clients comment on the page
Pins, areas and arrows where they mean it, plus sign-off when it's right.

02 · Features

Everythingin the box.

Real browsers: Chrome, Safari, Firefox
Breakpoint sweep 320–1920px
WCAG 2.2 accessibility checks
Fixes in plain words
Client comments & sign-off
Linear, Jira, GitHub & Slack
Runs from CI
Works on any stack

Open uicheck.app

Also by FulgidWorksynkKnow which projects are slipping, before the deadline does.

CATCH LAYOUT BUGSBEFORE CLIENTS DO.

Built by Fulgid. Used on our own projects.

Find every problem

Fix it where you work

Prove it's fixed

Clients comment on the page

Everythingin the box.

CATCH LAYOUT BUGSBEFORE CLIENTS DO.

Built by Fulgid. Used on our own projects.

Find every problem

Fix it where you work

Prove it's fixed

Clients comment on the page

Everythingin the box.