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| Format | Header | Description | Common Use | | :--- | :--- | :--- | :--- | | | Yes (Usually 78 9C or 78 01 ) | Standard wrapper containing a header and checksum. | Network protocols (HTTP, SSH), PNG images. | | Raw Deflate | No | The raw compressed stream without headers. | Specific developer implementations. | | Gzip | Yes ( 1F 8B ) | Similar to Zlib but includes file system metadata. | .gz files, Linux compression. |

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For sensitive work, run this one-liner offline: | Format | Header | Description | Common