Knowledge Bank
3 min read
The balance grid, and the two guides for things you cannot control
A centred face and centred text cancel each other out. Plus the duration badge and the crop nobody plans for.
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A face and a headline dropped in the middle of the same frame fight over one square inch, and at feed size neither of them wins. The balance grid overlays a set of guides on your actual thumbnail draft so you can see the collision before you publish rather than after.
Why off centre reads faster
The fix here is the one photographers have used for a century. Put the subject on a third rather than dead centre, and hand the remaining two thirds to whatever else has to be read, which on a thumbnail is almost always the text.
The face left and face right toggle exists because that choice is not arbitrary. It depends on where your text block sits and which way the subject is looking, and flipping between the two takes a second.
The five guides, and what each one catches
| Guide | What it is for |
|---|---|
| Rule-of-thirds lines | The two vertical and two horizontal lines you place the subject against |
| Face zone | The shaded third where the subject sits without crowding the text |
| Text zone | The clean area left over for the headline |
| Power points | The four points a subject's eyes usually land on |
| Duration badge and safe margin | The parts of the frame you do not control |
The two guides for things you cannot control
These are the ones worth the visit on their own, because they catch problems no amount of design sense will.
YouTube draws its own duration badge over the bottom-right corner of every thumbnail. Anything you put there is going to sit underneath a black pill with white numbers on it, and you will not see that until the video is live.
The dashed margin marks what gets cropped. Mobile and the rounded-corner grid view both eat into the edges, so text placed near the boundary loses its first or last letter on exactly the surface most of your audience is using.
Use it while the layout is still rough
The point of the grid is to change the composition, which means running it while moving things is still cheap. Bring it in when the layout is roughed out and the text is placeholder, before you have spent an hour on the lighting of a face that is in the wrong third.
Once the composition passes, the remaining checks are about legibility at size rather than layout, and those belong in the feed preview.
What it will not tell you
It has no opinion on whether the thumbnail is any good. A perfectly balanced composition of a boring idea is a well-organised thumbnail nobody clicks.
The grid solves collisions. Deciding what the image should show in the first place happens two steps earlier, when you sketch the concepts.
Nothing is uploaded
The grid renders in your browser and the draft stays on your machine.
Keep reading
Building the image itself is covered in make the thumbnail. Once the composition is settled, run it through shrink-testing the pair, and if the text and the title are saying the same thing, title and thumbnail as a pair covers the split.