Design Compare
Compare your design to the live website — without switching tabs
Upload the design, overlay it on the real running page, and slide the opacity. Every spacing, font, and alignment mismatch shows up instantly — and you can pin a comment on it right there. Pixel-perfect design QA, with zero extensions and zero tab switching.
The problem: design QA by tab switching
Every agency, freelancer, and developer knows this loop: the design in one tab, the live site in another. Switch, look, switch back, try to hold the design in your head long enough to spot what is off. A 20-page review means hundreds of switches — and the small mismatches are exactly the ones that slip through:
- Spacing that is 8px off but "looks fine" from memory
- A font weight or size that quietly changed in build
- Buttons and sections misaligned by a few pixels
- Colors that drifted between the design and the CSS
- Sections rendered in a different order than designed
- Breakpoint layouts that were never checked at all
Browser extensions for pixel-perfect overlays help one developer in one browser — but the feedback still ends up in screenshots and chat messages, disconnected from the page and from your task board.
The solution: overlay the design on the live site
UX Peeker puts the design and the live website on one screen, in the same review workspace your team already uses for feedback:
- 1
Open the live website
Paste the URL — UX Peeker mirrors the real, running page. No install on the client's site.
- 2
Upload the design for the page
One design per page, per screen size — including any custom width. Export from Figma or any design tool as PNG/JPG.
- 3
Slide the opacity
The design overlays the live page. Fade it from 0–100% and every mismatch reveals itself instantly. Scroll the page — the design scrolls with it, perfectly in sync.
- 4
Pick your mode
Design ghosted over the site, or the site fading over the design behind it. One click to switch.
- 5
Pin a comment on the mismatch
Clicks pass through the overlay, so you comment on the live element while comparing. Every comment becomes a tracked task automatically.
More than a pixel-perfect overlay extension
Overlay extensions prove the technique works — but they stop at looking. UX Peeker closes the loop:
| Capability | Overlay extensions | UX Peeker |
|---|---|---|
| Design overlay with opacity | ||
| Works with no install, for the whole team | ||
| Comment on the mismatch, in place | ||
| Comments become tracked tasks | ||
| Client sees it through a no-login link | ||
| Design saved per page & screen size |
Built for the people who ship websites
Agencies
Run design QA on every page before the client ever sees it — and let the client review through the same link.
Freelancers
Prove your build matches the design, catch issues early, and keep all feedback in one place.
Developers
Check your implementation against the spec at any width — desktop, device presets, or a custom size.
Design compare — FAQ
How do I compare my design to the live website?
Open the live site in UX Peeker, click Compare, and upload the design image for that page. The design overlays the real page with an opacity slider — fade it in and out to spot every difference. The design scrolls in sync with the page.
How do I check if a website matches the design pixel-perfectly?
Overlay comparison is the fastest manual method: put the design at 50% opacity over the live page and every spacing, size, font, and alignment mismatch becomes visible immediately. Slide toward 100% to see the design, toward 0% to see the site.
Do I need a browser extension for design overlay comparison?
No. Extensions like pixel-perfect overlay plugins work only in your own browser and only for you. UX Peeker runs the comparison in the review workspace itself — your whole team and even clients see the same overlay through a share link, with no install.
Can I comment on mismatches while comparing?
Yes — that is the difference. With the design ghosted on top, click the live element underneath and pin a comment right there. It automatically becomes a task on the project board, assigned and tracked.
Does it work for Figma designs?
Yes. Export the frame as PNG or JPG at the page's width and upload it — one design per page, per screen size, including custom widths. Your opacity and alignment settings are remembered for each page.
Put your design and the live site on one screen
Free to start — upload your first design and compare in under a minute. Design compare is part of UX Peeker's website feedback tool.
Start comparing free