# Uploading thousands of objects to s3 signed URL

**URL:** <https://community.transloadit.com/t/uploading-thousands-of-objects-to-s3-signed-url/14966>\
**Category:** Uppy\
**Created:** [June 25, 2019, 5:32am UTC](https://community.transloadit.com/t/uploading-thousands-of-objects-to-s3-signed-url/14966 "2019-06-25T05:32:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![josh3333332](https://avatars.discourse-cdn.com/v4/letter/j/9d8465/32.png) [@josh3333332](https://community.transloadit.com/u/josh3333332)\
**Post date:** [June 25, 2019, 5:32am UTC](https://community.transloadit.com/t/uploading-thousands-of-objects-to-s3-signed-url/14966/1 "2019-06-25T05:32:25Z")

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We are currently running into an issue when uploading thousands of images with the aws-s3-multipart plugin. Upon commencement of upload, the UI displays ‘preparing upload’ whilst it attempts to sign all the URLs at once. This usually causes a huge slowdown, often crashing chrome. It seems that the limit function only affects concurrent uploads and not the signing side of the process. Is there a known solution to this?