Hi Guangsen,

Since Trax Codes is browser based, we use the text size options that come with the browser. Press CTRL and the "+" key at the same time to make the text bigger, and press CTRL and the "-" key at the same time to make the text smaller. If you have a mouse with a mousewheel, you can press CTRL and roll the mousewheel to resize the text bigger and smaller. On a laptop with a trackpad, you can zoom in on the Trax Codes webpage with two-fingers, the same as you would on a map.

Let us know if your question was about something else.

Thanks,

Azam