Paint tool sai. При сохранении файла в саи в любом формате картинка сжимается (смотри пояснение к вопросу)

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Посмотрела на факах разработчика о проблеме

http://www.systemax.jp/en/sai/faq_spec.html#filecrash

Проблема есть, но по сути её решения там ничего не сказано

Q. Sometimes the files that saved as .sai format become broken.

The .sai format is designed to detect data breakdown strictly, but some of other formats don't care the little broken data, so in this case not only .sai format but also other files may be broken.

If some of .sai files couldn't be opened without relation in their file size, please check the storage drive or their information may be broken. It is thought that caused by suddenly power supply OFF and failed to complete writing entire file information, or caused by longevities or breakdown of each devices. If you use USB storage, it may be caused by removal without 'Safely Remove Hardware' operations from taskbar.

Followings are notifications of some kind of drives:

- HDD(Hard Disk Drive)
These kind of drives are weak to heat. If used not enough cooling environment or temperature is largely changing situations, this cause shorten the longevities of them.

- Flash SSD(Solid State Drive) or USB Flash Memory
In these kind of drives the cells become deteriorated gradually on each data writings. Deterioration of cells cause data writing failure and files become disappear or broken. If without any data writings but it is said that each cells only keep data about ten years. Of course each products of this kind is improved day and day, but you should know they has longevity on readings and writings.

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