Rocket eBook

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Identify it

Extensions	`.rb`
MIME types	`application/x-rocketebookapplication/octet-stream`
Signatures	`b00cb00c` at byte 0 (File Formats Wiki) `b00cc0de` at byte 0 (File Formats Wiki) `b00cf00d` at byte 0 (File Formats Wiki)
PRONOM	`fmt/485`
Wikidata	`Q105860142Q49988510`

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Open it

Rocket eBookreads

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Sources

From Just Solve the File Format Problem (File Formats Wiki), PRONOM, Wikidata. Updated 2026-10-24.

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