# Blog 1

## Random Talk on Random Thoughts

While I was testing SVGPan, I saw the viewBox attribute. I learnt something from the first search result after googling “svg viewbox”. It was an article introducing the SVG viewbox. There’s no difficult concepts in the guide, but I can’t understand it because of the following claim.1

<svg width="800" height="400" viewBox="0 0 400 200">


This view box covers half the page starting in the upper right hand corner.

I have investigated into this, and I’m dubious about this idea. I’ll illustrate my doubts using two examples. Click “download” at the top right-hand corner to view the result.

“The view box covers the entire page”, as expected.

This time, the view box only covers the top left-hand corner.

In addition, I’ve found out that changing 0 0 400 200 to 400 200 0 0 doesn’t work.