The media uploader automatically sizes down images to 350 pixels in width, and images must be a minimum of 100 x 100 pixels.
All URLs ending in .gif, .jpg, .jpeg, and .png are automatically treated as image placeholders. To place an image inside a wiki page, simply enter the address (URL) of the image you want to include. For example, the URL https://static.tvtropes.org/pmwiki/pub/images/strawberry_pop_tart_blow_torches.gif displays in the text as

- But there's a problem.
- See how the bulleted list looks next to the image?
- Watch out for bulleted lists when adding an image.

For many cases, though, there's a better option: the quoteright box. Using [[quoteright:57:https://static.tvtropes.org/pmwiki/pub/images/strawberry_pop_tart_blow_torches.gif]] (57 being the image width) puts the image on the right, like so:

Using externally-hosted images is forbidden. Instead, use the Media Uploader tool located when you edit a page to upload the image to TV Tropes. You will have to Get Known to enable uploading. Uploaded images will show up on the Images List.
When adding links like that, make sure that the image file's extension is NOT capitalised. Otherwise, you'll just get something like .
That's how you format images. For information on how to pick which image to add, check out How to Pick a Good Image.
... And that's a damn lot of strawberry Pop-Tarts. Let this be a lesson to you.
Aw, come on! There's strawberry frosting all over The Troping Code!