Sound-programmable e-paper badge with USB serial programming and 125 kHz RFID emulation

Sep 12, 2023

Project update 3 of 8

About GGtag's Image Support

by Radoslav Gerganov

Greetings, everyone!

In this week’s update we will show you some tips and tricks for using images in the web interface running at

The Image command

The Image command draws an image on the canvas and has the following parameters:


Example: Place an image located at at X=100, Y=50 using default width and height and no dither:

Example: Place an image located at at X=50, Y=30 using width=150, height=166 and dither:

When using the image tag, there are two things you need to keep in mind:

Support for drag and drop

You can also place PNG images using drag and drop:

This doesn’t work well for large images, so you may need to resize the image first to make it smaller. In general, it’s preferable to use images with URLs because the final tag is easier to share.

Text to image

Currently GGtag supports only latin characters when displaying text. If you want to display text with non-latin characters, you’ll need to convert it to an image first using your favorite image editor. Here is an example tag with Thai characters that we made for our friends at CNX-Software.

Should you have any questions, please feel free to reach out to us using the "Ask a technical question" link or participate in our GitHub discussions! And if you haven’t claimed your own GGtag yet, there’s still time while our campaign is live!

Until next time!

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