ResizeWizard

Quick, anchored window resizing with themes and sync. Efficiently resize browser windows anchored to the top-left corner.

Resize your browser window instantly — anchored, precise, and fast. Perfect for developers and designers testing responsive layouts, or anyone who wants their windows exactly the right size. QUICK RESIZE • Six one-click presets: HD (1280×720), Full HD (1920×1080), 2K (2560×1440), Tablet (768×1024), Mobile (375×667), Square (1080×1080) • Custom sizes from 100 to 9999 px, with real-time validation as you type • Rotate to swap width and height for portrait/landscape testing • Undo and redo any resize; copy the current size to your clipboard • Windows resize anchored to the top-left corner by default — no chasing your window around the screen GLOBAL HOTKEYS & AUTO-APPLY • Jump straight to any preset with a keyboard shortcut — Alt+1/2/3 out of the box, all six bindable at chrome://extensions/shortcuts (Alt+R opens the popup) • URL auto-apply: automatically resize when you open a matching site — for example, always 375px wide on twitter.com STAY INFORMED • Live on-page overlay showing viewport and window size in real time — in whichever corner you choose • Recent-sizes history: re-apply any of your last resizes with one click • Docked panel mode: keep ResizeWizard beside your window for side-by-side resizing • Dark, light, or follow-your-system theme SAVED SIZES • Save the sizes you use most (up to 5 free) and apply them in one click NEW IN 1.2 — PRO • Breakpoint preset packs: swap the quick presets for Bootstrap 5 or Tailwind CSS breakpoints, or build a fully custom pack — the popup, panel, hotkeys, and toolbar all follow along • Editable preset names: rename any preset with your own label ("HD" → "YouTube"), per pack • Resize anchor: keep the window where it is, or auto-center it after every resize • Popup keyboard shortcuts: Ctrl/Cmd+Z undo, Ctrl/Cmd+Shift+Z redo, Ctrl/Cmd+C copy size, Ctrl/Cmd+R rotate • Multi-window: apply one size to every open window, or tile two windows side-by-side PRO — $12/YEAR • Unlimited saved sizes, synced across devices with Chrome sync • Design grid overlay: configurable columns, gutters, and an 8px baseline over any page • Quick resize toolbar: a draggable on-page toolbar with your presets, a custom size input, and saved sizes • Responsive testing mode: automatically cycle your window through your saved sizes at an interval you choose • Export and import your sizes as JSON; longer history (up to 50 entries); reorderable popup sections • One license covers 3 devices PRIVACY No ads, no tracking in the extension. Your sizes and settings stay in your browser; Pro license checks contact only our license server. Questions or ideas? https://resizewizard.app/support