.NET 10: ZIP it. Smarter.

by Remy van Duijkeren | Jun 16, 2025 | Shorts

.NET 10: ZIP it. Smarter.

Yes, you could already update entries inside ZIP files before...
But now you can do it without rewriting the entire archive.

.NET 10 introduces smarter ZIP editing:

  • Direct in-place updates of entries
  • No more loading all entries into memory
  • No full re-zip needed

Also added in .NET 10:
`ZipFile.OpenAsync`

The new async ZIP APIs let you read and write ZIP content without blocking threads.

Perfect for:

  • Cloud apps dealing with big files
  • Background tasks extracting uploads
  • Console tools that don’t want to freeze like it’s 2004

Ever had to unzip just to replace one file?

dotnet

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