Image restoration/Uploading

Wikimedia Foundation and file formats
Files up to 100MB in size can be uploaded to Wikimedia Foundation sites.

Currently, Wikimedia Foundation sites do not accept TIFF format for uploading. They do accept PNG format, but will only thumbnail PNG images of 12.5MB or smaller.

So for most purposes, restorations will be uploaded in JPEG format. JPEGs thumbnail properly up to the full 100MB upload limit if they do not use progressive compression.

Documentation
Always upload both 'before' and 'after' versions of the restoration, and link from each to the other. Include detailed notes about the types of edits performed.