UltraWideo vs Ultrawide Video – Which One Should You Use?

What Do These Extensions Do?

Both UltraWideo and Ultrawide Video (listed on the Chrome Web Store as "UltraWide Video – Zoom, Stretch to Fill") remove black bars from videos on ultrawide monitors. They resize the video to fill your screen, so you get the immersive picture your monitor was built for.

They solve the same problem at different scales. Ultrawide Video is a small, completely free tool built around one zoom slider and aspect-ratio presets. UltraWideo has more modes and controls, runs on Firefox as well as Chrome, and adds an optional Pro tier.

Side-by-Side Comparison

Store figures are as of September 2026. UltraWideo has 70,000 users on the Chrome Web Store (4.2 from 587 ratings) and 15,572 daily users on Firefox Add-ons (4.4 from 238 ratings). Ultrawide Video has 10,000 users on the Chrome Web Store (3.6 from 10 ratings) and 13,548 on Microsoft Edge Add-ons (4.8 from 10 ratings). Those are the listings linked from its website, ultrawidevideo.com.

Modes and Controls

Ultrawide Video has two modes: Zoom, which scales the picture up evenly, and Stretch, which widens it. Both use a single zoom factor you set with a slider from 1× to 2×, or with one-click presets for 16:9, 18:9, 21:9, 24:9 and 32:9. On first run it estimates a starting value from your screen's shape, and that same factor then applies to every video until you change it. An "Apply only in fullscreen" checkbox keeps pages untouched while you browse.

UltraWideo has four modes: Normal, Upscale, Stretch and Custom. Upscale and Stretch work out the fill from each video's own dimensions and the size of the player. A 4:3 clip and a 16:9 video both fill the screen without you touching a slider. Custom sets exact horizontal and vertical scale, linked or unlinked. Pan shifts the picture to reframe what stays visible. There are no aspect-ratio preset buttons, because the modes calculate the fit for you.

Both extensions have keyboard shortcuts you can change in your browser's shortcut settings. UltraWideo adds built-in gestures: Ctrl + mouse wheel or a two-finger pinch cycles modes, Ctrl + Alt + mouse wheel adjusts scale, and Alt + drag pans the video.

The Interface

Both extensions keep their controls in a normal toolbar popup.

UltraWideo opens from its toolbar icon or with Alt + Shift + V (Ctrl + Cmd + V on macOS). The popup has three tabs – Settings, Shortcuts and Preferences – with auto, light and dark themes, 16 accent colors, and a language picker covering 41 languages. You can switch language right there, without changing your browser's language. The popup closes when you click away, so when you change modes with a shortcut or gesture, a small pill over the video confirms the new mode, in fullscreen too.

Ultrawide Video fits on a single screen: Off, Zoom and Stretch buttons, the scale slider with its presets, the fullscreen-only checkbox, and a list of its shortcuts. It follows your system's dark mode setting and appears in your browser's language (55 languages are available).

Browser Support

UltraWideo runs on Chrome and Firefox. The Chrome Web Store version also covers Edge, Brave, Opera, Vivaldi and other Chromium browsers. The Firefox Add-ons version covers Firefox forks like Zen, LibreWolf and Waterfox. With Pro, cloud sync carries your settings between Chrome and Firefox.

Ultrawide Video is available on the Chrome Web Store and Microsoft Edge Add-ons, so it runs in Chrome, Edge and other Chromium browsers. Its developer doesn't offer a Firefox version.

Netflix and Other Protected Streams

Both extensions support DRM-protected services such as Netflix, Disney+ and Prime Video, and resizing the video works normally there.

On protected streams, the browser doesn't let page scripts or extensions read the video's pixels. That affects two of UltraWideo's Pro features. Ambient Light switches off on those streams, and Letterbox can't detect baked-in bars automatically. For that case, Letterbox has a Measure tool: drag over the top black bar and UltraWideo crops to it.

What UltraWideo Adds

• Letterbox (Pro) – crops black bars baked into the video file itself, with automatic detection or the Measure tool on protected streams
• Per-site and per-page settings (Pro) – a different setup for each website, or for specific pages
• Ambient Light (Pro) – a soft glow around the video that matches its colors
• Enhance (Pro) – sharpening that adjusts to the video's resolution
• Mode Manager (Pro) – hide modes you never use from the cycle
• Cross-browser cloud sync (Pro) – settings follow you between Chrome and Firefox

The free tier includes all four modes, scale and pan, shortcuts, gestures, and one global setting for every site. Pro costs $2.99/month or $29.90/year.

What Makes Each One Stand Out

Who Should Pick What?

Pick UltraWideo if you want more control and more browsers. It runs on Chrome and Firefox, fits each video automatically, and adds pan, gestures and custom scaling. The free tier covers all four modes. Pro adds per-site settings, Letterbox, Ambient Light, Enhance and cross-browser sync.

Pick Ultrawide Video if you use Chrome or Edge and want a simple, completely free zoom slider with aspect-ratio presets, and you don't need Firefox support or per-site settings.