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.
Simple, honest pricing
Everything you need to review a site.
Simple, honest pricing
Everything you need to review a site.
Four things drifted in the build: the heading dropped a weight, the button lost its radius and shifted colour, the card padding tightened, and the price sits 6px low. Obvious side by side — invisible when you are alt-tabbing between two windows.
See the full workflow
Overlaying the design on the live site, finding what drifted, and leaving a comment pinned to it.
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. Nothing is installed on the client's site.
- 2
Bring in the design
Connect Figma and pick the frame, or upload a PNG/JPG. One design per page, per screen size, including custom widths.
- 3
Slide the opacity
The design overlays the live page. Fade it from 0–100% and every mismatch reveals itself. Scroll the page and the design scrolls with it, 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 |
Spotting the mismatch is half the job
An overlay extension shows you the problem and then leaves you to it — you still screenshot it, describe it somewhere, and hope it gets fixed. Here the comparison is the start of the workflow, not the end of it:
Pin it where it is
Click straight through the overlay onto the live element and leave the note there. No screenshot, no "third section down".
It becomes a task
The comment lands on the board with an assignee and status, and deep-links back to the exact pin it came from.
Prove it was fixed
Capture the flagged element before and after the fix, so the change is shown rather than claimed — attached to the task.
Works straight from Figma
Connect your Figma account once, pick the frames you want, and UX Peeker pulls them in — so you are not re-exporting PNGs by hand every time a design changes. Prefer files? Upload a PNG or JPG instead, which also covers designs made in any other tool.
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 bring in the design for that page — connect Figma and pick the frame, or upload a PNG/JPG. 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.
What is design QA?
Design QA is the review step that checks a built page against the design it was based on — spacing, type, colour, alignment and responsive behaviour — before it ships. It is distinct from functional QA, which checks that things work rather than that they match the intended design.
How do I check if a website matches the design pixel-perfectly?
Overlay comparison is the fastest reliable method: put the design at around 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.
What does "pixel perfect" actually mean in practice?
In practice it rarely means literally identical to the pixel — fonts render differently across operating systems and browsers, and fluid layouts are meant to flex. A realistic standard is that spacing, type scale, colour and alignment match the design at the breakpoints you designed for. Overlaying the two is how you verify that quickly.
Do I need a browser extension for design overlay comparison?
No. Pixel-perfect overlay extensions 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 nothing to 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 with Figma?
Yes. Connect your Figma account and pick the frames to overlay — UX Peeker pulls them in directly, so you are not exporting images by hand every time the design changes. You can also upload a PNG or JPG if you prefer, or if the design lives in another tool.
Can I compare the design at mobile and tablet widths?
Yes. Designs are stored per page and per screen size, so you can attach the mobile frame to the mobile breakpoint and the desktop frame to desktop, then switch between them. Responsive drift is one of the most common things this catches, because it is the part nobody checks by hand.
Can I prove a mismatch was actually fixed?
Yes. You can capture a before/after screenshot of the exact element a comment is attached to — one when the issue is reported, one after the fix — so the change is visible rather than asserted. It is attached to the task, so the record stays with the work.
Does the client see the design overlay too?
Only if you want them to. The overlay is available in the shared review link, so a client or stakeholder can see the same comparison without an account — useful for sign-off conversations where "it does not look like the mockup" needs to be settled with evidence.
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