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VIDEOMOSAICBlog

Watch several videos at once, side by side.

Video Mosaic puts the videos from your open tabs on one page, like a video wall. Play, pause and seek each one on its own, and choose which screen you hear.

Add to Chrome — free

Works with YouTube, Twitch, Vimeo, Dailymotion — and any other site that plays video in a tab.

A Video Mosaic wall: four videos playing side by side in a two-by-two grid, with a toolbar across the top showing Play all, Sound set to follow mouse, and a column selector.
Four tabs, one wall. Each screen keeps its own controls.

How it works

Three steps, about ten seconds each

There is one step people do not expect, so here it is up front: you add each tab with a right-click.

  1. 1

    Play a video, then pause it

    Open the video in its own tab, let it play for a second so the tab has picture and sound, then pause. That is all the preparation there is.

  2. 2

    Right-click → Add this tab to Video Mosaic

    Chrome asks for permission per tab — that is a rule of the browser, not a choice we made. The right-click step is how you give it. The wall opens on the first add.

  3. 3

    Repeat, then press Play all

    Add as many tabs as you want on the wall, arrange the columns, and start everything together. The videos keep playing in their own tabs the whole time.

Step 2, in the Chrome right-click menu.

Features

A wall you can actually control

Not a grid of thumbnails. Every screen behaves like its own player.

  • Play and pause each screen

    Every screen has its own controls. Pause one to read a replay while the others keep running, or hit Play all to start the whole wall at once.

  • Sound where you want it

    Pick the one screen you hear, or set sound to follow the mouse — move the pointer over a screen and the audio moves with it.

  • A timeline for every video

    Each screen gets its own scrub bar plus −10s and +10s. Rewind one match without touching the rest of the wall.

  • Arrange the wall

    Set the number of columns, the shape of each screen, zoom inside a screen, go edge to edge or fit everything to the window.

  • Fullscreen

    Push the wall to the whole display and the browser chrome disappears. Good for a second monitor left running all afternoon.

  • Works in private windows

    Enable it for Incognito and the wall behaves exactly the same. Nothing is written down either way.

  • No real limit on screens

    Free stops at three. Buy the unlock and add as many as you want — the extension itself has no cap. How many run smoothly depends on your computer, not on us.

  • Landscape or vertical, mixed

    Shorts, TikTok and Reels play in their own shape, not stretched or cropped to fit. Put a portrait clip right next to a landscape one on the same wall.

No real limit

As many as you want, any shape

Free stops at three screens. Buy the unlock and the count disappears — there is no cap in the extension itself, only what your computer can comfortably draw. Portrait video sits on the wall exactly like landscape, so short-form clips and streams share the same wall.

A Video Mosaic wall with nine tabs playing at once in a three-by-three grid: an aerial surf shot, a DJ mixing music, a night-time city drive, a stylised game landscape, an aerial coastal town, someone at a desk, a house under construction, people in a plaza, and a green field.
Nine tabs, one wall. Nothing in the extension stops you adding more.
A Video Mosaic wall of eight portrait video clips in a four-column grid — surfing, cooking, street photography, gymnastics and more short-form clips, each kept in its own tall shape rather than stretched or cropped.
A wall of nothing but portrait clips — same layout controls, no cropping.

Use cases

What people put on the wall

  • Several matches at once

    Sunday afternoon, four games, one screen. Sound follows the mouse, so you hear whichever one just got interesting.

  • Two videos side by side

    Compare two reviews, two tutorials, two takes of the same run. Independent timelines mean you can line them up frame for frame.

  • Streams while you work

    Keep three or four Twitch or YouTube streams on a second monitor, muted, and glance over when something happens.

Pricing

Ten euros, once. No subscription.

Three screens are free forever. If you need more, you pay one time and that is the end of it.

Free

Everything, up to three screens.

€0

  • Up to 3 screens on the wall
  • All layout and sound controls
  • Per-video timelines
  • No account, no time limit
Add to Chrome
One-time

Unlimited

As many screens as your machine can draw.

€10 once

  • Unlimited screens
  • Everything in Free
  • Licence restores by email on a new computer
  • No renewal, no card on file
Install, then upgrade inside

Payment happens in the extension, through Stripe.

FAQ

Questions people actually ask

Why do I have to right-click every tab?
Chrome only lets an extension read a tab after you explicitly grant it, tab by tab. The right-click menu item is how you give that permission. No extension can get around it, and one that claims otherwise is reading your pages another way.
Netflix, Disney+ and Prime Video show a black screen. Why?
Those services use DRM, and Chrome refuses to hand the picture to any extension. The screen stays black. Nothing we can do about it, so we say it here rather than let you find out after installing. YouTube, Twitch, Vimeo, Dailymotion, self-hosted video and most sports streams work fine.
What data do you collect?
None. Video frames are drawn to your screen and discarded. Nothing is recorded, uploaded or sold, and there is no account. The only personal data connected to the product is the email address ExtensionPay holds if you buy the upgrade, so your licence can be restored. The full detail is in the privacy policy.
Does it work on Firefox, Edge or Safari?
Chrome today. Edge and other Chromium browsers are not officially supported yet but generally work. Firefox is planned. Safari is not.
Does it download or record the videos?
No. It mirrors what the tab is already showing and draws it into the grid. The video keeps playing in its own tab, and nothing is written to disk.
What happens on a new computer?
Install the extension, open the upgrade screen and enter the email address you paid with. Your licence restores itself. There is no password and no account to recover.
How many screens can my computer handle?
There is no hard limit in the extension itself — people run walls of eight or more. Four to six 1080p videos is comfortable on most laptops from the last few years; beyond that, drop the videos to a lower quality in their own tabs, since the wall follows whatever the tab is playing.
Does it work with vertical video, like TikTok or YouTube Shorts?
Yes. Portrait video works exactly like landscape — add the tab the same way, and it keeps its own shape on the wall rather than being stretched or cropped. Landscape and vertical screens can sit side by side on the same wall.
Is the €10 a subscription?
No. It is a single payment of €10 for unlimited screens, handled by Stripe through ExtensionPay. There is no renewal and no card kept on file.
Do the videos stay in sync?
Each screen is an independent player, so they run at whatever point you set them to. Use Play all to start them together, and the per-video timeline with −10s and +10s to line them up.

Put your tabs on one screen.

Install it, right-click a tab, and see the wall for yourself. Three screens cost nothing.

Add to Chrome — free

Curious first? Read how to watch multiple YouTube videos at once.