Multi-device testing & QA for Chrome

See every screenat once.

Panescope opens your site on phones, tablets and laptops side by side, in sync, and gives you the tools to fix what you find: inspect, accessibility, Web Vitals and 42 debug tools.

Add to Chrome — it’s free See how it works

Free plan, no accountPro trial for 3 days, no card

Panescope · panescope.com/demo

Panescope workspace with an iPhone, an iPad and a MacBook showing the same page

Scroll, click, hover, typesynced across screens

WCAG 2.2 auditon every screen size

LCP 292 ms · CLS 0.03measured per screen

iPhone 17 ProiPhone AirPixel 10Galaxy S25 UltraGalaxy Z FoldiPad miniiPad AiriPad Pro 13"Surface ProMacBook Air 13"MacBook Pro 16"iPhone SEPixel FoldGalaxy Tab S9Desktop 14404K displayiPhone 17 ProiPhone AirPixel 10Galaxy S25 UltraGalaxy Z FoldiPad miniiPad AiriPad Pro 13"Surface ProMacBook Air 13"MacBook Pro 16"iPhone SEPixel FoldGalaxy Tab S9Desktop 14404K display

Everything in one workspace

Eight toolboxes for the whole job.

From the first look on a phone to the report you send the client. All features

Responsive

Every screen size at once, in sync.

7 features

Debug tools

42 tools for layout, vision and content.

5 features

Accessibility

WCAG 2.2 audits, contrast, focus and roles.

5 features

Performance

Core Web Vitals per screen, with field data.

3 features

Developer tools

Inspect, console, live CSS, storage, network.

6 features

Meta & sharing

Meta tags, structured data, 11 link previews.

3 features

Screenshots & video

Up to 16× captures, mockups, recordings.

4 features

Testing & reports

Visual diff, site scan, links, reports, issues.

6 features

How it works

From “looks fine on my laptop” to shipped on every screen.

Four steps, one workspace, no device lab.

Open your site in every size

Click the extension on any page, localhost included. Your phones, tablets and laptops appear side by side, in sync.

Inspect the same element everywhere

Hover any screen to see the element on all of them, with its accessible name, role and contrast. Click to compare.

Find what is broken

Accessibility, Web Vitals, console errors, broken links and 42 debug tools, on one screen or all of them.

Share what you found

A visual diff for the pull request, an issue with the environment filled in, or a report your client can print.

Panescope · panescope.com/demo

Panescope · panescope.com/demo

Name, role, contrast

Panescope · panescope.com/demo

WCAG 2.2, every screen

Panescope · panescope.com/demo

Live demo

Scroll one. Watch all three.

This is the Lumen demo site in three real screens, synced the way Panescope syncs them. Scroll inside any of them.

iPhone 15393 × 760

iPad mini744 × 1020

Laptop1280 × 800

In Panescope, clicks, hover and typing sync too — and each screen has its real pixel ratio. How sync works

Sync

Scroll the laptop. The phone follows.

Scroll position, navigation, clicks, hover and typing repeat on every screen, so you test one flow on all sizes at once.

Hover sync opens menus and tooltips everywhere
Password fields are never synced
Each kind of sync can be turned off

Panescope · panescope.com/demo

56devices in the library

42debug tools

18vision simulations

16×max screenshot resolution

11link previews

Why not DevTools?

Device mode shows one size. Your users have all of them.

Chrome DevTools is great for one viewport. Panescope is for the moment you need to see — and check — all of them together.

	Panescope	DevTools device mode
Screens at once	Many, side by side	One at a time
Scroll, clicks, hover and input in sync	Yes	No
Real pixel ratio and media queries per screen	Yes	One device at a time
Accessibility audit on every size	axe-core, every screen	Lighthouse, one run per size
Compare one element across sizes	Yes, differences highlighted	No
Vision simulations	18, per screen	6, whole tab
Screenshots	Up to 16×, mockups, annotate	Device size, 1×–3×
Visual diff, site scan, reports, issues	Built in	No

Pricing

Start free. Go Pro when you need it.

Free

The everyday multi-screen workspace.

$0forever

No account needed

Up to 3 screens
Device library and sync
Inspect & Elements
Console for every screen
Responsive check
Screenshots up to 2×
Horizontal, Vertical, Grid, Focus

Add to Chrome

Everything

Pro

Every tool, unlimited screens, up to 3 devices.

$79/ year

$6.58 a month, billed yearly

Unlimited screens
Accessibility audit (WCAG 2.2)
Web Vitals with CrUX field data
42 debug tools & Stacking 3D
Live CSS & JS, storage, headers
Visual diff, site scan, broken links
Reports & issue export
Recording, mockups, 16× captures

Start the 3-day trial

Upgrade from inside the extension · Secure payment by Stripe

Compare every feature

FAQ

Questions, answered.

Pricing and billing questions are on the pricing page. Inside the extension, every panel explains what it measures.

Does Panescope send the pages I test anywhere?

No. Pages load in your own browser, in the extension's workspace. Panescope's server only handles licensing and payments and, for Pro without your own key, CrUX lookups of public URLs.

Does it work on localhost and staging sites?

Yes: any http or https page, including localhost, preview deployments and sites behind basic auth or a header. Field data from CrUX only exists for public pages.

Why does Chrome say the extension is debugging the browser?

Some emulation (user agent from the first request, throttling, touch, timezone, CPU) uses Chrome's debugger API. Chrome shows that bar while it is on. Color scheme, sync, inspect and the audits don't need it.

What is free and what is Pro?

Free has up to 3 screens, screenshots up to 2×, Inspect and Elements, the responsive check, the console, sync and the Horizontal, Vertical, Grid and Focus layouts. Pro unlocks everything else: unlimited screens, the audits, debug tools, Live CSS, storage, emulation, visual diff, site scan, reports, recordings, mockups and up to 16× captures.

How does the trial work?

Start it from the upgrade dialog: Pro for 3 days on that device, no card needed. It can be used once.

How many computers can use one license?

Up to 3 devices per license. Deactivate a device from Settings › License to move the license to another one.

Can I cancel?

Yes, at any time, from the billing portal (Settings › License › Manage billing). Pro stays on until the end of the period you paid for.

Which languages does the interface support?

English, Tiếng Việt, 简体中文, Español, Português (Brasil), 日本語, 한국어, Deutsch, Français, Русский and हिन्दी. Tool names stay in English.

Test every screen before your users do.

Free to start. Pro for 3 days without a card.

Add to Chrome — it’s free See pricing