IPA (.ipa)
.ipa file signature | application/octet-stream
An iOS App Store Package (IPA) is a ZIP-based application archive format developed and maintained by Apple for distributing apps on iOS and iPadOS devices. It is used to package application binaries, resources, and metadata for installation through Apple deployment tools or managed distribution systems. Because it is an archive, IPA files can be inspected and extracted, and files from untrusted sources should be treated cautiously.
Magic Bytes
Offset 0
50 4B 03 04
Sources: Wikipedia
All Known Signatures
3 signature variants are documented for .ipa files across multiple sources.
Extension
.ipa
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .ipa files in Python
def is_ipa(file_path: str) -> bool:
"""Check if file is a valid IPA by magic bytes."""
signature = bytes([0x50, 0x4B, 0x03, 0x04])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .ipa files in Node.js
function isIPA(buffer: Buffer): boolean {
const signature = Buffer.from([0x50, 0x4B, 0x03, 0x04]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .ipa files in Go
func IsIPA(data []byte) bool {
signature := []byte{0x50, 0x4B, 0x03, 0x04}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/ipa
curl https://filesignature.org/api/v1/ipa
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .ipa file?
A .ipa file is identified by the magic bytes 50 4B 03 04 at byte offset 0. An iOS App Store Package (IPA) is a ZIP-based application archive format developed and maintained by Apple for distributing apps on iOS and iPadOS devices. It is used to package application binaries, resources, and metadata for installation through Apple deployment tools or managed distribution systems. Because it is an archive, IPA files can be inspected and extracted, and files from untrusted sources should be treated cautiously.
What are the magic bytes for .ipa files?
The magic bytes for IPA files are 50 4B 03 04 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .ipa file?
To validate a .ipa file, read the first bytes of the file and compare them against the known magic bytes (50 4B 03 04) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .ipa files?
The primary MIME type for .ipa files is application/octet-stream.
Is it safe to open .ipa files?
IPA (.ipa) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.