data.world supports a maximum total size of 1GB per dataset and 250 individual files or less per dataset.
Individual File Upload Limits:
data.world supports file sizes up to 1GB. If you have a file that is larger than that, try compressing the file to get it under the limit, but note that it would then only be available for download due to size constraints.
Inference & Preview Limits:
Non-tabular files that are previewable only display a file preview if less than 40k. Images will be displayed beyond that limit if possible.
For xls / xlsx, the file must be less than 100MB uncompressed for us to support query and data preview functionality.
For other supported data files, we will provide data preview and query capabilities up to 1GB.
Note: We're still working out the kinks, so please report any issues you encounter and we'll investigate further. If you have a dataset that falls out of these constraints, contact us as well and we'll work with you on it.