Displays active CSS media queries, Tailwind responsive breakpoints (sm, md, lg, xl, 2xl), and viewport resize behavior.
Replaces:
Window ResizerResponsive Breakpoint TesterInstalling a separate browser extension just for breakpoint debugger bloats Chrome memory, adds permission risk, and clutters your toolbar. OmniDev integrates Breakpoint Debugger natively alongside 53 other frontend and QA tools.
Displays active CSS media queries, Tailwind responsive breakpoints (sm, md, lg, xl, 2xl), and viewport resize behavior.
Runs inside an isolated Shadow DOM panel so host page styles never break or leak
Zero background RAM overhead when idle — lazy-loaded on demand in milliseconds
Replaces standalone Window Resizer, Responsive Breakpoint Tester extensions inside a single 54-in-1 toolkit
Shadow-DOM isolated • Zero host-page CSS leakage
STEP 01
Install OmniDev from the Chrome Web Store and open the popup or press your custom shortcut.
STEP 02
Select "Breakpoint Debugger" under the Inspect & Debug category (or search "Breakpoint Debugger" in the launcher).
STEP 03
Inspect, capture, or export results directly on the live page — 100% locally in your browser.
Yes. Breakpoint Debugger and all 54 tools in OmniDev are 100% free to use with no account signup or paywall.
No. Breakpoint Debugger runs locally inside your browser tab. OmniDev is architected local-first and never uploads your DOM, storage, or network payloads to a Jambo backend.
Breakpoint Debugger replaces single-purpose extensions such as Window Resizer, Responsive Breakpoint Tester, saving browser RAM and reducing extension permission sprawl.
Every tool below is included in the same single Chrome extension install.
Explore All 54 Tools
Inspect CSS properties, computed styles, box model dimensions, and typography natively on hover over any element.
Instantly view and copy Tailwind CSS utility classes applied to any DOM element on hover.
Scans and lists all font families, weights, line heights, letter spacing, and live typography usage on the webpage.
Precision pixel-level magnifying eyedropper to sample any color on screen in HEX, RGB, or HSL.
Scans the entire webpage to extract a deduplicated visual color palette of text, background, and border colors.
Stream console.log, warnings, uncaught exceptions, and runtime errors directly in an on-page overlay without opening DevTools.
Stop cluttering Chrome with dozens of single-purpose extensions. Install OmniDev free and run everything locally.
Install OmniDev for Free