Annotator is a free and open source image Annotator application for Linux. It is specially designed for elementary OS but you can any other desktop. It is released under GNU General Public License v3.0 and written in Vala. Just load the image in Annotator add shapes, stickers, text, drawings, and other callouts to highlight image . It also comes with magnifiers to enhance image, Blur the image to obfuscate data. You can also do image crop, resize and add borders in your image and save it in JPEG, PNG, TIFF, BMP, PDF and SVG file formats.
Install Annotator on Ubuntu Linux
Annotator is available via unofficial Ubuntu PPA. Open the terminal ctrl+alt+t and run below commands one by one to install in your system.
sudo add-apt-repository ppa:ubuntuhandbook1/annotator
sudo apt update
sudo apt install com.github.phase1geo.annotator
You can start Annotator via the show applications menu or via below command.
Currently it supports Ubuntu 20.04 and later. That’s it.