A random evening's coding that lets you put a pony in your placeholder. Service available online at placeponi.es. Can, of course, be repurposed to create placeholder images of any sort—ponies not required.

Source code is provided as-is, with no guarantees as to quality or support.

URL parameters can be written in any order and are delimited by a forward slash (/). Numerical values must be defined in order of width, height, and variant; aka, the first integer is assumed to be width, the second height, and third variant. They do not need to be grouped, so URLs like http://placeponi.es/400/g/300/regen/3 are perfectly valid.

http://placeponi.es/400/300
Generate a standard image 400 pixels wide and 300 pixels tall. Both values are capped between 1 and 5000 pixels.

http://placeponi.es/400/300/1 Add a third number to use multiple images with the same dimensions. Values are capped between 0 and 9, allowing for up to 10 variants.

http://placeponi.es/400/300/g Add /g/ anywhere in the URL to make the image grayscale.

http://placeponi.es/400/300/regen Add /regen/ anywhere in the URL to replace the existing image of this type.

• Redesign reporting panel.
• Add trial. Script now redirects to a generated image file instead of reading it into the current page.

• Re-enable logging for images with a referrer of placeponi.es.

• Refactor basically everything.
• Now supports generating images larger than the source image.
• Now supports generating more that one image with the same dimensions.
• Now supports putting URL parameters in (almost) any order.
• Added simple (and very unfinished) logging page.

• Fix issue caused by there being no referrer information available.
• Simplify how img.php grabs URL parameters.

• Add referrer tracking.

• Initial release.