Recommendations for image resolution, file size, and compression

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Recommendations for image resolution, file size, and compression

Sometimes, when uploading to some sites, if I upload images with resolution and size within the correct parameters, the server doesn't re-compress the images. If the images do get compressed, then they come out looking degraded.

I don't know if those settings are per-server.

Does anyone know if there is a preferred resolution, file type and file size for photos and videos on pixelfed in general or pixelfed.ca?

View original on lemmy.ca

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2 replies

klu9

lemmy.ca

Newbie here, I too would like to know more about resolution, compression etc. I found this: https://pixelfed.ca/site/kb/sharing-media , but it doesn't answer some specific questions I have.

When does pixelfed.ca change (compress, resize, change file format etc) an uploaded file?

Is there any way to keep certain files in original format/resolution?

I've shared a few screenshots in PNG format, which got recompressed as blurry JPGs. E.g. 66kb PNG to 33KB JPG. I had already cropped or resized the images to reduce file size but they got recompressed anyway.

I uploaded a smaller video (1.2MB MP4) that does not seem to have been recompressed. What about larger video files?

I have a 10MB MP4 video that I'd like to upload. In this case, I might actually like some recompression; I tried doing it myself with a couple of onine services and then Handbrake, but I only ended up with larger file sizes.

Otter

lemmy.ca

So I believe right now the max file size is around 30MB, with 20 things allowed per album. Images do get optimized when uploading, but so far I haven't noticed much degradation.

As for proportion, I've seen a bit of everything already. Personally I find square or portrait images work better on the mobile UI