# 为什么每日备份的大小会减少？

**URL:** <https://meta.discourse.org/t/is-there-any-reason-why-daily-backups-would-see-a-reduction-in-size/93845>\
**Category:** Product Support\
**Created:** [2018 年8 月 3 日 13:19 UTC](https://meta.discourse.org/t/is-there-any-reason-why-daily-backups-would-see-a-reduction-in-size/93845 "2018-08-03T13:19:13Z")\
**Posts on this page:** 1\
**Showing post:** 19

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作者： ![codinghorror](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/codinghorror/32/110067_2.png) [@codinghorror](https://meta.discourse.org/u/codinghorror)\
发布日期： [2019 年3 月 28 日 23:16 UTC](https://meta.discourse.org/t/is-there-any-reason-why-daily-backups-would-see-a-reduction-in-size/93845/19 "2019-03-28T23:16:29Z")

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We don’t back up the resized / thumbnailed images by default any more, just the original image.

This means all backups are smaller, _but_ restoring a backup is a bit more work in the short term, since after restore the system now has to auto-regenerate the “optimized” (resized, thumbnailed, etc) copies of the images from the originals. That’s the tradeoff.

Did I state this correctly @sam?

There is also a site setting if you want to retain all resized images in the backups to make restoring a bit more efficient.

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