Pixelsitter
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Visual regression monitoring for Webflow

Nothing is down.
Something moved.

Pixelsitter re-captures every page you watch, compares it against the last version you approved, and emails you the moment the layout shifts — with the picture attached. You find out on a Tuesday morning. Not from your client, on a Friday afternoon.

Start watching a site See how it works

Free forever for one site. No card, no CI pipeline, no Webflow API keys.

fernwood.example/ 1440×900 Changed · 1.57%
The baseline capture of the Fernwood Coffee homepage, approved on the last run. The new capture of the same page, in which a longer product title has pushed the card grid out of line. The pixel diff of the two captures, with every changed pixel painted magenta.

Drag to compare

Baseline · Tuesday 09:00 New capture · today 09:00

A real run. Someone pasted the full lot name into a CMS title field; it wrapped to a second line, the card grew, and the row below it moved down the page.

The gap

Uptime monitors answer a question nobody asked.

They confirm the page returned 200. They can't see that the hero lost its padding, that a pricing card now wraps to two lines, or that the logo is 400px wide on a phone. Webflow gives you no staging diff and no visual publish history, so the first person to notice is whoever loves the site least.

  • A CMS edit ran long

    A client pastes a fuller product name. The card grows, the grid falls out of line, and every collection item under it slides down the page.

  • A class got renamed

    Someone tidies up in the Designer. A section loses its padding on publish — and only at tablet width, which nobody thinks to open.

  • An image came in wrong

    A 4:3 photo drops into a 16:9 slot. Desktop looks fine. The phone version has been broken since the shoot.

How it works

Four steps, then it's someone else's job.

  1. 01

    Add the URL, prove it's yours

    Paste the address and drop one TXT record into the domain's DNS. Pixelsitter re-checks every 15 minutes and starts the moment it lands. No Webflow login, no API key, no crawler you have to whitelist.

  2. 02

    It photographs the pages you list

    Desktop at 1440×900, plus tablet 768×1024 and mobile 390×844 from Agency up. Hourly, daily or weekly — or the second Webflow fires its publish webhook, so a scan lands before your client refreshes.

  3. 03

    It diffs against the baseline you approved

    Every capture is compared to the last one you signed off on, pixel by pixel. Anti-aliasing and font-rendering noise are filtered out first, and anything under 0.5% of the page never reaches you. Quiet is the default state.

  4. 04

    You get one email with the picture in it

    A thumbnail, the percentage that changed, and a link straight to the before/after. Two buttons wait for you there: approve it as the new baseline, or flag it as broken. Slack instead of email, if that's where you live.

The report

Plain enough to forward to a client.

Not a pixel-diff dashboard. A run is five numbers and a stack of before/afters, each one waiting on a yes or a no. This is the whole interface.

Run #418

Completed

Fernwood Coffee · Nightly · today 09:00 · 41.6s

Delete run

Summary

12

Pages scanned

2

Changed

10

Unchanged

0

First captures

1.57%

Largest diff

Homepage

Changed

/ · 1440×900 · 1.57% of pixels changed

Approve as baseline Flag as broken
Before / afterSide by sideDiff OverlayNew capture
The changed region of the homepage, highlighted magenta in the diff view.
No change Shop0.00%
Changed Subscriptions0.94%
No change Wholesale0.00%
  • Every client site in one dashboard
  • Per-client tags
  • Pause a site, a page or a schedule
  • Slider, side-by-side, diff and overlay views
  • Email and Slack alerts
  • Up to a year of history
  • White-label reports
  • Re-run a scan by hand, any time

Pricing

Priced like a monitoring tool, not a testing platform.

One site is free forever, so you can watch something that matters before you decide.

Free

Watch one site, weekly.

$0forever

 

Start free
  • 1 site
  • 5 pages per site
  • Weekly scans
  • Desktop capture
  • 100 captures a month
  • 1 schedule per site
  • 7 days of history
  • Email alerts

Solo

For a freelancer with a handful of client sites.

$19/month

 

Start free, upgrade later
  • 3 sites
  • 25 pages per site
  • Daily scans
  • Desktop capture
  • 2,500 captures a month
  • 2 schedules per site
  • 1 month of history
  • Email alerts
Most agencies land here

Agency

Every client site, every breakpoint, scanned on publish.

$59/month

 

Start free, upgrade later
  • 10 sites
  • 50 pages per site
  • Scans every 6 hours
  • Desktop, tablet and mobile
  • 12,000 captures a month
  • 5 schedules per site
  • 3 months of history
  • Scan on publish (Webflow webhook)
  • Slack alerts

Studio

Hourly scans, unlimited pages, your logo on the report.

$149/month

 

Start free, upgrade later
  • 30 sites
  • Unlimited pages per site
  • Hourly scans
  • Desktop, tablet and mobile
  • 40,000 captures a month
  • Unlimited schedules per site
  • 1 year of history
  • Scan on publish (Webflow webhook)
  • Slack alerts
  • White-label reports

One capture is one page at one breakpoint in one run. Quotas reset on the first of the month. Cards, invoices and cancellation live in the Stripe portal.

Questions

The ones people actually ask.

Does it need access to my Webflow account?

No. It works on the published site. You add one TXT record to the domain's DNS to prove it's yours, and that's the only access it needs. Connecting Webflow's publish webhook is optional — it changes when a scan runs, not what Pixelsitter can see.

Will it wake me up over a rotating testimonial?

Only if more than half a percent of the page's pixels move. Anti-aliasing and font-rendering noise are filtered out before anything is counted, so a page that renders a hair differently today stays quiet.

Does it work on sites that aren't Webflow?

Yes — it captures published URLs, so anything you can open in a browser can be watched. It's built for Webflow because that's where the problem is worst: clients edit the CMS, there's no staging diff, and no visual publish history.

What happens to my sites if I downgrade?

Nothing gets deleted. Sites past your new limit go dormant — the oldest ones keep scanning — and they start again when you upgrade or remove one.

How do I cancel?

In the Stripe portal, any time. You keep the plan until the period you've already paid for ends, then drop to Free with every site and baseline intact.

Can I put my own branding on the reports?

On Studio, yes — your logo instead of ours, so a maintenance retainer looks like your work rather than a tool you resell.

Start with one site. It costs nothing.

Add a URL, approve the first capture, and go back to work. The next time something moves, you'll be the one who noticed.

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