PaintLasso Annotate
Free drawing tools for teaching, presenting, and explaining a webpage.
This page cannot be annotated
Chrome and Edge protect their built-in New Tab pages, settings, extension stores, and PDF viewers. If you see a Google search box on New Tab, open Google Search and click PaintLasso there. To annotate a local HTML file, enable “Allow access to file URLs” in this extension’s settings.
Your screenshot is ready to recover
PaintLasso could not open the screenshot automatically. Download it here, then import it from PaintLasso’s project workspace.
Try the teaching extension beta
Apply for the beta ↗ or share the application with another teacher.
Start on a webpage
- Pin PaintLasso Annotate from your browser’s extensions menu.
- Open the webpage you want to explain and click the extension icon.
- Choose a tool and draw with your mouse, pen, or touchscreen.
- Press Esc to click links and use the page underneath. Your marks stay visible.
Keep your tools out of the way
Drag the PaintLasso header to move the toolbar. Its arrow keys also reposition it. Minimize the toolbar to a small floating button, or close it to hide all annotations. Click the browser extension icon to bring them back.
Your teaching toolkit
- P Pen
- Smooth freehand ink.
- H Highlighter
- Translucent highlighting.
- A Arrow
- Point to an important detail.
- R Rectangle · O Ellipse
- Outline part of a page.
- T Text
- Click the page and write a note.
- E Eraser
- Swipe across a mark to remove that whole mark.
- L Laser and fading ink
- Point or move to leave a short trail that fades.
- S Spotlight
- Focus attention while dimming the rest.
- V / Esc Use page
- Click and scroll the original webpage.
Ctrl/⌘ + Z undoes a mark. Add Shift to redo. These shortcuts act on annotations while a drawing tool is selected. Alt + Shift + D toggles the extension. Change that shortcut in your browser’s extension shortcut settings if needed.
Save a screenshot or keep editing
Save screenshot downloads a PNG of the visible webpage with your annotations. The toolbar is left out of the picture. Open in PaintLasso sends that same image to a new PaintLasso tab, where you choose how to import it. Export editable annotations as JSON to back up or share your marks. Importing a JSON file adds its marks to the current page.
Saved on your device
Page annotations and toolbar preferences are stored in this browser’s extension storage. Reopen the same page and activate the extension to restore them. Uninstalling the extension clears its saved data. Export important drawings as JSON or PNG first.
On ordinary scrolling pages, marks follow their document positions. Websites that rearrange their content, use nested scrolling panels, or show content inside frames can move underneath your marks. Browser storage has a size limit. The toolbar reports saving errors and lets you export your work.
Permissions and privacy
The extension accesses a webpage when you activate it. It stores annotations locally and has no analytics, accounts, ads, or remote scripts. It requests access to paintlasso.com to hand off a screenshot when you choose Open in PaintLasso. PaintLasso’s normal account and cloud-saving settings then apply inside the app. Captures contain the visible page, so check them before sharing.
This extension annotates browser content. It does not draw over other desktop applications or browser controls.