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JPEG File Format Inspector
x402
JPEG File Format Inspector is a paid API for AI agents from file-formats.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).
Parses the first bytes of a JPEG file (as hex) to extract width, height, color components, baseline/progressive mode, and detect JFIF/Exif/Adobe markers.
Price / call$0.02
Success—
StatusUnknown
How this service works
Read a JPEG's width, height, components and baseline/progressive mode by walking its markers; flags JFIF and Exif.
Output
Returns a structured object containing the image width, height, number of color components, precision bits, progressive or baseline mode flag, frame marker identifier, list of JPEG markers seen, JFIF/Exif/Adobe presence flags, a human-readable summary and verdict, number of bytes examined, and any degraded or error reasons if parsing was incomplete.
Example use cases
Validate uploaded image dimensions
“I'm receiving user-uploaded JPEG files and need to check their width and height before storing them — can you read the dimensions from the first 512 bytes of this file in hex without fully downloading it: FFD8FFE000104A464946...”
Detect progressive JPEG for web optimization
“Check if this JPEG is encoded in progressive mode or baseline — here are the first 512 bytes as hex: FFD8FFE000104A464946... — I want to know whether I need to re-encode it for faster web loading.”
Audit JPEG metadata presence for privacy
“Tell me whether this JPEG contains Exif or JFIF metadata headers — I need to know before sharing it publicly. Here are the first 512 bytes as hex: FFD8FFE1024545786966...”
Technical details
Endpoint
GEThttps://file-formats.x402tookit.com/jpeg-info?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to extract JPEG image metadata (dimensions, mode, color info, marker flags) from raw file bytes without a full image processing library or full file download. Ideal for lightweight server-side validation, privacy audits (Exif detection), web optimization checks (progressive detection), or CI pipelines that inspect image uploads. Prefer this over general file-type detection when you specifically need JPEG-internal structural data beyond just format identification.
Side effects
- Insufficient hex bytes provided — frame header not found within first 512 bytes returns null dimensions
- Invalid or non-JPEG hex input causes parsing failure with error reasons in the reasons array
- Truncated or corrupted JPEG header results in degraded=true with partial results
- Hex string malformed or not valid hexadecimal causes bad request error
- Missing required 'hex' query parameter returns validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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