When using HTTP, GCS decompresses gzip-encoded objects by default:
https://cloud.google.com/storage/docs/transcoding
``` Setting this option to `gzip` disables automatic decompression. This can be useful for applications wanting to operate with the compressed data. Setting this option to `identity`, or not setting this option, returns decompressed data.
<aside class="note"><b>Note:</b>
Note that decompressive transcoding only apply to objects that are compressed with `gzip` and have their `content_encoding()` attribute set accordingly. At the time of this writing GCS does not decompress objects stored with other compression algorithms, nor does it detect the object compression based on the object name or its contents.
</aside>
###### See Also
[`AcceptEncodingGzip()`](xref:namespacegoogle_1_1cloud_1_1storage_1abb76cc18ed021b748ead4a4845b9b81e) is a helper function to disable decompressive encoding.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-04-22 UTC."],[[["The latest version available is 2.37.0-rc, and there are numerous previous versions accessible, ranging from 2.36.0 down to 2.11.0, for reference on this page."],["This page provides documentation related to the `AcceptEncoding` struct within the Google Cloud Storage C++ library."],["By default, Google Cloud Storage decompresses gzip-encoded objects during HTTP transfers, but this can be disabled to work with compressed data."],["Decompressive transcoding is only applied to objects specifically compressed with gzip and set with the corresponding `content_encoding` attribute."],["The `AcceptEncodingGzip()` function is provided as a helper to easily disable automatic decompression when retrieving objects."]]],[]]
