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 2025-04-09 UTC."],[[["This webpage lists the available versions of the `AcceptEncoding` struct within the Google Cloud Storage C++ client library, ranging from version 2.11.0 to the latest release candidate 2.37.0-rc."],["The `AcceptEncoding` struct is used to control whether Google Cloud Storage (GCS) should decompress gzip-encoded objects during HTTP transfers, which by default it does."],["Setting `AcceptEncoding` to `gzip` disables automatic decompression, allowing applications to work with the compressed data, while `identity` or not setting this option returns decompressed data."],["Decompressive transcoding only applies to objects compressed with `gzip` that also have the `content_encoding()` attribute set correctly."],["The page also provides information on a helper function `AcceptEncodingGzip()` that can be used to simplify disabling decompressive encoding, as well as a function to retrieve the header name."]]],[]]
