Visual QA for design and code

Save hours on design QA. Catch every mismatch in seconds.

Drop in the approved design and a screenshot of the build, or paste direct image links. QA Troll flags every difference in spacing, color, and type, then writes fixes your developers can ship right away.

$20/month · Cancel anytime · Built for designers, developers, and QA

Checkout · Payment
Analysis complete
Approved design1440px
Current build1440px

Visual report

7.8% drift
Header offset

+12px Y

Button radius

8px → 12px

Text color

#A3A3A3

Tailwind fix
mt-3 rounded-xl text-muted-foreground
Pixel-level measurements Stack-aware guidance1440 × 1024 compared

From reference to exact fix

A visual handoff developers can act on.

01

Add the truth

Upload approved Figma exports, screenshots, or reference URLs.

02

Add the build

Pair each screen with its coded page, screenshot, or accessible URL.

03

Ship exact fixes

Review measured drift and implementation guidance for your stack.

Before and after

A 20-page review goes from a work week to a coffee break.

Checking a page by hand, side by side with the design, takes about an hour. QA Troll checks all 20 pages in about 10 minutes.

A real QA pass

Maya signs off on a landing page in minutes, not a meeting.

Maya is the product designer at Ember Roasters. Her developer shipped the new homepage to staging and asked, “Does it match?” It looks close. Instead of squinting between two tabs, she drops the approved Figma export and a staging screenshot into one QA Troll flow.

Approved designFigma export · 1440px
Approved Figma design of the Ember Roasters coffee landing page
Staging buildScreenshot · 1440px
Staging build of the Ember Roasters landing page with small visual differences

Landing page · 2 screens · 1 flow

3.2%

visual difference found

Nothing she'd have caught with confidence by eye, and all of it measured. She sends the checklist, the developer fixes it, and the rerun shows 0% difference.

  1. 1

    Headline sits 14px low

    Hero padding-top is 64px in the build vs 50px in design.

    pt-12 → pt-[50px]
  2. 2

    Subheading is too light

    Text renders #7A726B; the design specifies #4A3F38.

    text-stone-500 → text-stone-700
  3. 3

    Button lost its pill shape

    Corner radius is 6px; the approved design uses full pill.

    rounded-md → rounded-full
  4. 4

    Card gap is uneven

    Gaps measure 40px and 42px; design is a consistent 32px.

    gap-10 → gap-8

Pricing

One plan. Everything included.

Less than an hour of review time a month. Cancel anytime.

QA Troll Pro

$20/ month

  • Unlimited QA projects and flows
  • Screenshots, live URLs, and Figma references
  • Measured drift on layout, spacing, color, and type
  • Fixes written for Tailwind, CSS, React, and more
  • Saved results and one-click reruns
Subscribe for $20/month

For designers

Protect the intent of the approved file without writing another vague annotation.

For developers

Get measured offsets, colors, sizing, and code guidance instead of a subjective review.

For QA teams

Keep every screen, source, result, and rerun together in one repeatable workspace.

FAQ

Questions about visual design QA

What you can upload, how comparisons work, and what your developers get back.

What file types can I upload?

Upload any standard image: PNG, JPG, WebP, GIF, or AVIF. PNG works best for design QA because it is lossless, so compression artifacts are not mistaken for visual differences. Keep each file under 4.5 MB.

Can I use screenshots instead of Figma files?

Yes. Screenshots are the most common input. Any image of the approved design and any image of the current build can be compared, whether they come from Figma, Sketch, Adobe XD, a browser, or a device simulator.

How do I compare a Figma design?

Export the frame from Figma as a PNG at the same width as the page you are testing, then upload it as the design reference. You can also paste a direct HTTPS link to an exported Figma image.

Can I paste a live website URL?

Links must point directly to an image served over HTTPS, such as a hosted screenshot. To check a live, staging, or localhost page, take a full-page screenshot in your browser and upload it. Private network and localhost URLs cannot be fetched.

Do the design and build images need to be the same size?

No, but matching sizes give the most accurate results. QA Troll scales the build image to the dimensions of the design reference, up to 1920 × 1600 pixels. Capture both at the same viewport width (desktop, tablet, or mobile) to avoid false differences.

What kinds of visual differences does QA Troll detect?

It measures pixel-level drift and reports real differences in layout, spacing, alignment, typography, color, corner radius, and content. Each finding includes a severity, a measurement, and a suggested fix.

Which frameworks are the code fixes written for?

Choose Tailwind CSS, plain CSS, React, Vue, SwiftUI, or Flutter for each project, and every fix is written for that stack so developers can paste it straight into their code.

Does it work for mobile apps?

Yes. Set a screen to the mobile or tablet viewport and upload screenshots from iOS, Android, or a device simulator. SwiftUI and Flutter guidance is available for native apps.

Can I check a whole user flow at once?

Yes. Group screens into flows, such as onboarding or checkout, and run the whole batch in one pass. Every screen, source, and result is saved together so you can rerun it after fixes ship.

How is this different from visual regression testing?

Visual regression tools compare a build against its previous version. QA Troll compares the build against the approved design, so it catches drift that was never correct in the first place.

Are my designs and screenshots private?

Yes. Uploads are stored in private storage tied to your account and are only used to run your comparisons. They are never shown publicly.

How much does QA Troll cost?

QA Troll Pro is $20 per month and includes unlimited projects, flows, and reruns. There is no contract, and you can cancel anytime.

QA Troll Pro · $20/month

Stop describing what looks off. Measure it.

Create a project, add your references, and turn visual differences into fixes your developer can ship.