How to Annotate Screenshots Without a Desktop App
You took a screenshot. Now you need to draw an arrow pointing to something, highlight a section, or blur out personal info before sending it to someone.
The old way: open Photoshop, Paint, or Snagit. The fast way: do it right in your browser.
The Old Way vs. The New Way
The Old Way (5+ minutes)
- Take a screenshot with your OS tool
- Find the file on your desktop
- Open it in Photoshop, Paint, or Preview
- Add your annotations
- Export as a new file
- Upload it somewhere to share
The New Way (30 seconds)
- Click the FullScreenie icon (or press a shortcut)
- Annotate right in the editor that opens
- Copy, save, or share with a link
FullScreenie's Annotation Tools
The editor opens automatically after every capture. Here's what you get:
Pen
Freehand drawing. Circle things, underline, sketch.
Arrow
Point at exactly what matters.
Shapes
Rectangles and ellipses to frame content.
Text
Add labels, notes, or callouts.
Highlight
Semi-transparent overlay to emphasize text.
Blur
Hide sensitive info — emails, names, data.
All tools let you pick colors and adjust stroke width. Everything is non-destructive — undo with Ctrl+Z or clear all annotations and start over.
When You'd Use In-Browser Annotation
Bug reports
Arrow pointing to the broken element, a note explaining what's wrong. Send it in 15 seconds.
Design feedback
Highlight the spacing issue, circle the wrong color, add a note. Share a link with the designer.
Privacy-safe sharing
Blur out your email, account number, or personal details before sharing a screenshot publicly.
Tutorials and how-tos
Number the steps, arrow to the buttons, highlight the menu item. Make it crystal clear.
No extra software. FullScreenie's editor runs inside Firefox. Capture, annotate, and share without ever leaving your browser or installing a desktop application.
Annotate screenshots in your browser
Pen, arrows, text, highlight, blur. Free and instant.
Add to Firefox — It's Free