SnapSide

Split screen any tab into a side window or 2nd monitor — even Gmail & ChatGPT (no iframe). One click or shortcut.

Tired of constantly switching tabs between your work and reference? SnapSide pops any tab into a side window — in one click or with a quick keyboard shortcut. Works where other split-screen extensions fail. Unlike extensions that embed pages via iframe (and break on Gmail, Google Docs, ChatGPT, Notion, and many other sites), SnapSide opens a real browser popup window. That means it works on every site you actually use. Have a second monitor? Even better. While most split-screen tools squeeze two things into one screen, SnapSide can send the side window to your second display in one click — turning your extra monitor into a dedicated panel for chat, reference, or video. Write in Google Docs while checking Gmail on the side. Ask ChatGPT a question while editing a document. Place the information you need right next to your main work — no tab switching, no manual window resizing. How to use: • Split Google Docs / Sheets into two panes for writing and referencing • Keep Gmail / Google Calendar / Slack visible at the edge of your screen • Take notes during Google Meet with the meeting on the side • Draft documents while consulting ChatGPT / Claude / Gemini • Watch video tutorials or live streams while working • Turn your second monitor into a dedicated chat or video panel Features: • Works on every site — Gmail, Google Docs, ChatGPT, Notion, YouTube and more (no iframe = no broken pages) • One-click split — Click the extension icon or press Alt+S to split / merge • Flexible ratio — 5:5 / 6:4 / 7:3 / 8:2 presets + 5%-step slider • Multi-monitor first — Send the side window to your second display in one click (3+ monitors supported) • Favorite URLs — Launch your go-to sites in one click • Left or right placement — Choose which side the window appears on • Keyboard shortcuts — Alt+S / R / W / T for quick control Perfect for: • Writers and editors consulting AI while drafting documents • Researchers comparing multiple sources side by side • Remote workers taking notes during video meetings • Multi-monitor users wanting a dedicated side panel for chat or reference Pricing: All features are free for the first 14 days. If you like it, get lifetime access for a one-time $4.99 after that. About your data: SnapSide itself collects no browsing history, page content, or personal information. All processing happens on your device — nothing is sent to the developer's server. Email and payment details are received and processed directly by Stripe (via ExtensionPay) only at license purchase. The developer never has access to payment information. See the privacy policy for details.