--- title: Visual engine | Qventis One description: "The visual engine runs on the Qventis Engine: baseline comparisons of screens and documents, with ignore regions and human review of every diff." --- [Skip to content](https://qventis.ai/engines/visual#main) [![qventis](https://qventis.ai/hubfs/raw_assets/public/qventis-one/images/qventis-logo.svg)![qventis](https://qventis.ai/hubfs/raw_assets/public/qventis-one/images/qventis-logo-reverse.svg)](https://qventis.ai/?hsLang=en) - Platform [**Qventis Engine**The core of the platform. 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Compare screens and documents against an approved baseline, ignore the regions that always change, and let a person decide every real difference. [Book a demo](https://qventis.ai/contact#demo)[See Qventis One](https://qventis.ai/one?hsLang=en) - Screens and PDFs compared - Noisy regions ignored - Custom desktop screens too **Invoice looks right**Desktop + document, 4 steps 1. Open the 'Invoice preview' screen 2. Check that the screen matches 'baseline' ignoring 'Date' 3. Click the 'Export PDF' button 4. Check that 'invoice.pdf' matches 'baseline' on all pages ## Catch what functional checks miss ### Screens and documents Compare a screen, a region or a generated PDF page by page, on web, desktop or mobile. ### Quiet by design Name the regions that change every run in the step, and set a tolerance for rendering noise. ### People decide No baseline changes without a human decision, recorded with who made it and when. ## How the visual engine works ReviewA person decides every diff Where it helpsDocuments, desktop, branding One model, one paneShared screens, one results view ### Every diff is a question Was the new button color intended, or did a stylesheet break? Only someone who knows the release can answer. 1. The run saves the baseline, the new image and a highlighted overlay. 2. A reviewer compares them side by side. 3. They accept a new baseline or link a defect to a ticket. 4. The decision is logged, and the next run uses the approved image. [Review diffs in Quality View](https://qventis.ai/one/quality-view?hsLang=en) ### Where visual checks pay off Some regressions pass every functional check and still look wrong. - Customer documents, where a shifted total is a support call - Custom-drawn desktop screens with little structure to inspect - Theme changes that touch hundreds of screens at once - Localized screens where longer text overflows or truncates [Legacy desktop testing](https://qventis.ai/solutions/legacy-desktop?hsLang=en) ### Coverage you can see Visual checks run inside your functional tests, and baselines attach to screens in the [App Model](https://qventis.ai/one/app-model?hsLang=en). - See which screens have visual coverage and which don't - Diffs, decisions and evidence land in [Quality View](https://qventis.ai/one/quality-view?hsLang=en) - Each diff sits next to the functional result from the same step [Explore the App Model](https://qventis.ai/one/app-model?hsLang=en) ## Questions Does it work on custom desktop screens? Yes. When a screen exposes little structure, a baseline comparison is the most reliable evidence. Do I need separate visual tests? No. A visual check is one more step in a test you already have. ## See your noisiest screen tested cleanly Bring a screen or customer document that changes often, and leave with a baseline that only flags real differences. [Book a demo](https://qventis.ai/contact#demo) Get the brief [![qventis](https://qventis.ai/hubfs/raw_assets/public/qventis-one/images/qventis-logo.svg)![qventis](https://qventis.ai/hubfs/raw_assets/public/qventis-one/images/qventis-logo-reverse.svg)](https://qventis.ai/?hsLang=en) [Support](https://qventis.ai/support?hsLang=en)[Trust](https://qventis.ai/platform/trust?hsLang=en)[Privacy and terms](https://qventis.ai/legal?hsLang=en)Contact © 2026 qventis.aiThird-party product names are trademarks of their respective owners.