steve-fenton / picz Goto Github PK

Background images should be larger that the screen width - because they are often show with crop factors. At the moment, a 400px wide screen gets a 400px wide background image, which looks low quality due to crop factors. Picz should go for the next size up for background images to improve the quality of background images.

Prevent random resize requests.

Images should not be upscaled!

If an image is requested larger than "actual size" it should be returned "as is" and not upscaled - so the cached image for a 2000px wide image in the 4000px folder should still just be 2000px wide.

The principle here is "never server a larger file than the original".

The browser's upscaling will be no worse than handling it in code anyway.

Currently, the controller action for the images is hard-coded to be...

[Route("Picz")]

And the image URLs are generated to match this (int PiczHelper)...

builder.Attributes.Add("src", $"/picz?s={options.Sizes.Min()}&p={url}");

...

sourceSets.Add($"/picz?s={size}&p={url} {size}w");

The developers consuming Picz should be allowed to configure "Picz" to be some other name!

The image-set feature is not yet well supported across all browsers. Picz could be very useful in making background images responsive.

After checking width, need to reset the stream position, i.e.

file.InputStream.Position = 0;

Handle GIF Image Types

Handle PNG images.

If an image is available without an extension, i.e.

/Content/my-image

The MIME Type should be obtained from the response, not from the extension.

Check Disk Space before creating cached images.

If images are already being served by a controller, allow them to handle the resize.