What size images work best?

Images are the rocket fuel for quizzes – the right pictures can turn an average quiz into an awesomely engaging one.

You can make quizzes in three orientations – wide, tall, or square. Each uses different image dimensions.

We include a ‘crop’ tool – just click on ‘edit’ on any image.

  • Widescreen: 960 x 540
  • Square: 720×720
  • Tall: 720×960

File size: 250KB is a good target.

Don’t worry if your file is bigger than that. We automatically compress all images by 80% – which works for most folks.

(However, if you have some very large files, you might want to speed up your quiz loading times by reducing the overall pixel dimensions and file size. For example, a 400KB file uploaded becomes a 50KB file – but a 4MB file would be 500KB.)

Please note: once you select a format, all of the images will be in that ratio… for example, you can’t mix/match wide with tall images.

This is on purpose – we didn’t want your quiz resizing all the time to accommodate different image layouts.

Animated GIF file size: 

GIFs are super popular – and great for engagement.

An animated GIF’s file size is a little quirky. It’s the total resolution x the number of frames.

Our image provider has a 100MB limit for your GIF’s total file size.

With animated GIFs, file size really is <resolution> X <# of frames>.

So for example, a GIF of 1,000 pixels high x 800 pixels wide x 200 frames = 800,000 pixels x 200 frames = 160,000,000 bytes (160MB!).

  1. To avoid this issue, you want to make each frame as small as possible in Photoshop or whatever your designer used.
  2. 960×540 for our wide format is ideal.
  3. Second, you can reduce the # of frames per second – something like 5 or 6 per second is fine.
  4. Third, you can use a free tool like https://ezgif.com/optimize to reduce the file size by about 40%.

But they’re big files – and they’re slow to load, especially if you’re using several in a single Riddle. (Unless you’re using our new lazy loading option – which also speeds things up.)

The good news? Now, all animated GIFs you upload (or use from Giphy) will automatically be converted to MP4 videos (max file size: 7MB).

No loss of quality, and a much faster experience, especially for mobile users on slower connections. Huzzah!