Annotate Screenshot — Add Arrows, Boxes and Text
Paste a screenshot and annotate it online with arrows, rectangles, highlights, callouts and text. Copy to clipboard or save as PNG. Private — nothing is uploaded.
🔒 Runs entirely in your browser — nothing is uploadedMark up screenshots in seconds
A good screenshot with a clear arrow saves a paragraph of explanation. This annotator is built for that job: paste a screenshot with Ctrl+V and the canvas instantly takes its size, with the red arrow tool already selected. Drag from where you want the arrow to start to the thing you want to point at, then adjust either end with its handle. Switch to rectangles or ovals to frame an area, use speech callouts for short notes, or pick the text tool to write instructions directly on the image with any font, size and an optional solid background for readability.
The marker brush draws semi-transparent strokes that work like a highlighter pen over text and buttons. Use the rectangle with a solid fill to cover passwords, email addresses or customer data before you share the image. Hold Shift while drawing to keep arrows and lines at perfect 45° angles and shapes perfectly square. Every action can be undone with Ctrl+Z, so you can experiment freely.
Crop to what matters
Screenshots often include more than you need. Choose Select, drag around the important part and press Ctrl+Shift+X to crop. You can also resize the whole image or add extra space for notes by dragging the handles on the canvas edges. If you want to keep your marks separate, add a layer first and annotate on it; you can then hide it to compare before and after.
Share it anywhere
When you are done, copy the whole image to the clipboard and paste it into Slack, Teams, Jira, GitHub, email or a document, or save a PNG file. Because everything happens locally in your browser, internal dashboards, invoices and chat logs never leave your computer, and there is no signup or watermark.
How to use
- Paste your screenshotTake a screenshot (Win+Shift+S, Cmd+Shift+4 or Print Screen) and press Ctrl+V on this page, or drop the image file onto the editor.
- Add arrows, boxes and textThe red arrow is ready to go. Switch to rectangles, ovals, callouts, the marker for highlights or the text tool. Drag handles to adjust before committing.
- Copy or saveUse File → Copy whole image to paste it into chat or email, or save it as PNG.