17 lines
589 B
Markdown
17 lines
589 B
Markdown
# The Brief Anatomy of a PNG image
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```
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The first 24 bytes:
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+=================================+
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| PNG Header | 8 bytes | -> 89 50 4e 47 0d 0a 1a 0a
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+---------------------+-----------+
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| IHDR Chunk Header | |
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| Chunk Length | 4 bytes | -> The length of the IHDR Chunk Data
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| Chunk Type | 4 bytes | -> 49 48 44 52
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+---------------------+-----------+
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| IHDR Chunk Data | |
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| Width | 4 bytes | -> uint32 — big endian
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| Height | 4 bytes | -> uint32 — big endian
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+=================================+
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``` |