Capture instantly
Press the hotkey and drag a region, or use Long Capture to collect a scrolling page into one image, including the final visible tail when you continue scrolling at the actual page bottom. Confirm to copy and save.
Capture, translate, keep moving
Keep the work
in front of you.
Mouse4 keeps the useful parts of a Windows workflow close: fast region capture, long-page stitching, selected-text translation, browser text handoff to AI, and a reference you can pin without opening a heavy editor.
Mouse4 for Windows · v1.4.7
View release notes
14-day trial. Windows setup. No account required.
No subscription
Works across multiple monitors
Saves locally
Ready to capture
Drag a region
Pinned to your desktop
Translate selected text
The useful parts
Capture quickly.
Keep the context.
Pin to desktop
Keep an important screenshot visible while you work. Drag it, zoom it, or close it when you are done.
Save and copy automatically
Every capture is copied to the clipboard and saved as a timestamped local PNG in one step.
Translate selected text
Select text, press the shortcut, and get a readable floating translation panel with copy, read aloud, font size, opacity, pin, settings, and close controls. In the capture editor, commit text annotations with Enter and drag them to reposition.
Send screenshots or text to AI
Send a finished screenshot from the toolbar, or select webpage text in Chrome and choose Send to AI. Both workflows use the same daily Chat conversation and bilingual extension.
Double-click to go back
Double-click empty space in File Explorer to return to the previous folder without reaching for the Back button.
Also included
Clipboard-ready captures
Timestamped local PNG files
Mixed-resolution multi-monitor support
Long-page capture
Selected-text translation
Screenshot and browser-text AI handoff
Remembered panel controls
Quiet system-tray operation
See the workflow
From a detail
to a decision.
Region capture, annotation, long-page stitching, desktop pinning, and selected-text translation in one short workflow. The demo uses real Mouse4 footage. Version 1.4.7 adds safety limits and automatic saving for long captures; 1.4.5 added movable text annotations. Long Capture was improved in 1.4.1–1.4.4 to include the final visible page tail without resizing the frame on entry. Browser text handoff was introduced in 1.4.0. The existing animation and demo video remain unchanged.
How it works
Three steps.
That's it.
1
Press the hotkey
Bring Mouse4 up whenever you need it.
2
Drag a region
Select exactly what matters. Nothing more.
3
Paste, save, translate, or pin
Use the result immediately, read it aloud, find it later, or keep it floating above your desktop.
Simple, honest pricing
Try it free.
Keep it for $4.99.
Use every feature for 14 days. When you are ready, pay once and keep Mouse4 for the life of the product.
How delivery worksPay with Stripe or PayPal. After we confirm your payment, we email your license key to the address used at checkout.
Mouse4 Lifetime LicenseWindows
$4.99
One-time payment · No recurring charges
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Questions, answered
No surprises.
Where do I download the trial?
Click Download free trial to download the latest Windows Setup installer directly. Release notes are available separately.
Is this a subscription?
No. Mouse4 is a one-time lifetime purchase with no recurring charges.
How many computers can I activate?
One license can be activated on up to three computers.
How do I receive my license key?
Stripe or PayPal collects your checkout email. After payment is confirmed, the key is generated and sent to that email address.
Do screenshots leave my computer?
No. Captures are processed and saved locally by the Windows app.
Can I keep a screenshot visible?
Yes. Use Pin to desktop to keep a capture above other windows while you work.
Can I capture a long scrolling page?
Yes. Select the page area, choose Long Capture, scroll through the content, then confirm to save and copy one stitched image.
How does selected-text translation work?
Select text in a supported Windows application and press the translation shortcut. Mouse4 shows the result near the selection with controls for copy, reading, font size, opacity, pinning, settings, and close.
Can I send a capture to AI?
Yes. Click the AI action after finishing a capture. Mouse4 immediately shows Sent to AI and sends the image through the Mouse4 for ChatGPT Chrome extension.
Can I send selected webpage text to AI?
Yes. Select text on a webpage, open the Chrome context menu, and choose Send to AI. Chinese Chrome shows 发送到AI. The text uses the same daily Chat conversation and queue without reading the clipboard.
Can I change the translation service?
Yes. The translation-only settings page lets you enter the provider, service URL, model, and API key. The key is stored locally using Windows user encryption.