InspectDevTry InspectDev free. Upgrade when it earns it.
Install the full extension free. If you use it every day, Pro is $29 for life.
Add to Chrome for Free★ Used by 100+ developers
The developer toolbox, built into your browser.
One extension replaces the dozen you keep installed for CSS inspection, color sampling, responsive testing, and every other daily dev task. No account needed. Nothing leaves your machine.
Works with
product screenshot — app UI
Every tool you reach for, already there.
No more digging through ten extensions. Open InspectDev and pick the tool you need.
CSS Inspector
Inspect and edit CSS on any element, live. Changes render as you type.
Responsive Checker
Preview any page across device widths — phone, tablet, desktop — in a single frame.
Local Storage Manager
Browse, edit, and clear local storage and cookies from a single panel.
Color Picker
Sample any pixel. Copy hex, RGB, or HSL in one click.
Extract Images
Download every image on a page — regular, background, and SVG — in one click.
Page Ruler
Measure spacing and alignment between any two elements, in pixels or percent.
Plus everything else you'd expect.
Install once. Done.
Three steps and you're set. No onboarding flow, no account creation, no configuration.
1
Install the extension
Add InspectDev to Chrome, Firefox, Edge, or any Chromium browser. It takes about 10 seconds.
2
Open any page
Click the InspectDev icon in your toolbar. Every tool is one click away — no digging through menus.
3
Inspect, measure, extract
Pick the tool you need, do the job, close it. Nothing runs in the background until you open it.
Built around how you actually work.
Not another extension that tries to be a platform. Just the tools you need, designed to get out of your way.
One extension, not twenty
Most dev tools are single-feature extensions that bloat your browser. InspectDev does everything the others do — and nothing you don't need.
Works everywhere you test
Chrome, Firefox, Edge, Brave, Opera, Safari, Vivaldi. Same tools, same interface. One license covers all of them.
Runs on your machine, not a server
Every tool runs locally. No page data ever leaves your browser. No account, no telemetry, no cloud dependency.
Lifetime license
$29
$149Save $120
one payment, no subscriptions
Only 0 left at this price
✓Lifetime updates
✓All current & future tools
✓Chrome, Firefox & Edge
✓Priority email support
✓No account required
✓Offline & privacy-first
Add to Chrome for FreeLoved by 100+ developers
“Have been using it since the beginning. Very helpful for developers”
Rajib Barua
WordPress Developer
“Good extension for developers”
Md Shifut Hossain
Frontend Developer
“As a web developer, my extension toolbar used to be cluttered with single-purpose utilities — a color picker, a responsive breakpoint tester, a storage manager, and an asset scraper. InspectDev consolidates almost all of them into a fast, unobtrusive toolkit. The live CSS editor and the Page Ruler are extremely responsive, saving a ton of back-and-forth context switching with native DevTools when fine-tuning layouts. Being able to extract clean, standalone HTML/SVG snippets and check local storage state from a unified overlay speeds up rapid prototyping significantly.”
Rayhan Uddin
Web Developer
“One-time payment for a tool this useful feels like a steal. My whole team uses it now.”
Priya Nair
Engineering Lead
“Fast, lightweight, and it just works across every browser I test in.”
Tom Reilly
QA Engineer
“Cut my debugging time in half. The local storage manager is a lifesaver.”
Ana Torres
Full Stack Developer
Install once. Works in all of them.
The same tools follow you from Chrome to Firefox to Edge. One install, every browser you test in.
Chrome
Fast and secure browsing
Firefox
Open source and privacy-focused
Edge
Microsoft's modern browser
Brave
Privacy-focused browsing
Opera
Feature-rich browser
Vivaldi
Customizable browsing experience
Arc
Minimalist, distraction-free browser
Frequently asked questions
Is InspectDev free to try?+
Yes. Install the extension free and try the core tools before deciding to upgrade.
Which browsers are supported?+
Chrome, Firefox, Edge, Brave, Opera, Arc, and Vivaldi.
Is this a subscription?+
No. One payment, lifetime access, all future updates.
Does it slow down my browser?+
InspectDev weighs under 2 MB and only runs tools when you open them. Nothing runs in the background.
Do you collect my data?+
No data ever leaves your browser. Every tool runs locally. No account, no telemetry.
Can I use it on multiple devices?+
Yes, one license covers your account across all your devices.
Is there a refund policy?+
Yes, a full refund is available within 30 days of purchase.
How do I get support?+
Email us anytime — we typically reply within a business day.