New Lifetime license — $29

See what movedvanishedresizedrestyled
between two versions.

Delta snapshots a page, then tells you exactly what changed the next time you look — element by element, property by property. Not a pixel diff. No screenshots, no CI, no config.

One payment. No subscription. Nothing leaves your browser.

northbeam.com/pricing
ProductDocsCustomersPricing
Spring offer — 20% off annual plans through March 31.
Plans for every team
Start free. Scale when you need to. No seat minimums.
Starter
$0 /mo
  • Up to 3 projects
  • 7-day history
  • Community support
Team
$29 /mo
  • Unlimited projects
  • 90-day history
  • Email support
Scale
$99 /mo
  • Everything in Team
  • Unlimited history
  • SSO and audit logs
Deltanorthbeam.com/pricing
Before
Not captured
After
0changes
Capture before
Snapshot the page as it looks right now.
Delta18 changes
Six kinds of change

Every difference, named.

Because Delta reads the rendered DOM instead of pixels, it can tell you which property changed and what it changed to.

Added

Elements that appear in the new version and weren't there before.

Removed

Elements that disappeared, with their last known text and position.

Moved

Exact pixel deltas. Reparented elements are matched by signature, not path.

Resized

Width and height changes, above a two-pixel threshold that ignores jitter.

Restyled

Twenty-five computed properties tracked, each reported from-value to to-value.

Text

Copy edits caught at the node level, so a headline change never hides in a layout shift.

The difference

A pixel diff tells you where. Delta tells you what.

Screenshot tools

Two images, subtracted

// 4,182 pixels differ
// region: 340,220 → 512,268

…now go find out why
Delta

Elements and properties

button.cta restyled
  background #2563eb#1d4ed8
  radius     6px999px

section.hero moved
  Δy +64
How it works

Three clicks. No setup.

01

Capture a baseline

Open the page and hit capture. Delta records every element's geometry, computed styles, and text — stored locally, keyed to the URL.

~40ms
02

Change something

Ship a deploy, edit a stylesheet, toggle a flag, or just come back tomorrow. Your baseline waits.

any time later
03

Compare

Every difference paints onto the live page. Hover a row to highlight it, click to scroll to it, filter by type.

instant
Pricing

Buy it once. Keep it.

No subscription, no seats to manage, no usage limits. Every future update included.

DeltaLifetime
$29one time
  • Unlimited diffs on any page
  • All six change types with property-level detail
  • Baselines saved per URL
  • Up to 3 devices on one license
  • Every future update, free

Secure checkout by Stripe. 14-day refund, no questions asked.
By buying you agree to the Terms and Privacy Policy.

Stop squinting at two tabs.

Runs entirely on your machine. No account to create, no telemetry, nothing uploaded.