Fast, dependency-free Go package to infer binary file types based on the magic numbers header signature
Fast, dependency-free Go package to infer binary file types based on the magic numbers header signature
Small and dependency free Go package to infer file and MIME type checking the magic numbers signature.
For SVG file type checking, see go-is-svg package. Python port: filetype.py.
go get github.com/h2non/filetypeSee Godoc reference.
package main
import (
"fmt"
"os"
"github.com/h2non/filetype"
)
func main() {
buf, _ := os.ReadFile("sample.jpg")
kind, _ := filetype.Match(buf)
if kind == filetype.Unknown {
fmt.Println("Unknown file type")
return
}
fmt.Printf("File type: %s. MIME: %s\n", kind.Extension, kind.MIME.Value)
}package main
import (
"fmt"
"os"
"github.com/h2non/filetype"
)
func main() {
buf, _ := os.ReadFile("sample.jpg")
if filetype.IsImage(buf) {
fmt.Println("File is an image")
} else {
fmt.Println("Not an image")
}
}package main
import (
"fmt"
"github.com/h2non/filetype"
)
func main() {
// Check if file is supported by extension
if filetype.IsSupported("jpg") {
fmt.Println("Extension supported")
} else {
fmt.Println("Extension not supported")
}
// Check if file is supported by mime type
if filetype.IsMIMESupported("image/jpeg") {
fmt.Println("MIME type supported")
} else {
fmt.Println("MIME type not supported")
}
}package main
import (
"fmt"
"os"
"github.com/h2non/filetype"
)
func main() {
// Open a file descriptor
file, _ := os.Open("movie.mp4")
// We only have to pass the file header = first 261 bytes
head := make([]byte, 261)
file.Read(head)
if filetype.IsImage(head) {
fmt.Println("File is an image")
} else {
fmt.Println("Not an image")
}
}…image/jpegimage/pngimage/gifimage/webpimage/x-canon-cr2image/tiffimage/bmpimage/heifimage/vnd.ms-photoimage/vnd.adobe.photoshopimage/vnd.microsoft.iconimage/vnd.dwgimage/avifvideo/mp4video/x-m4vvideo/x-matroskavideo/webmvideo/quicktimevideo/x-msvideovideo/x-ms-wmvvideo/mpegvideo/x-flvvideo/3gppaudio/midiaudio/mpegaudio/mp4audio/oggaudio/x-flacaudio/x-wavaudio/amraudio/aacaudio/x-aiffapplication/epub+zipapplication/zipapplication/x-tarapplication/vnd.rarapplication/gzipapplication/x-bzip2application/x-7z-compressedapplication/x-xzapplication/zstdapplication/pdfapplication/vnd.microsoft.portable-executableapplication/x-shockwave-flashapplication/rtfapplication/x-iso9660-imageapplication/octet-streamapplication/postscriptapplication/vnd.sqlite3application/x-nintendo-nes-romapplication/x-google-chrome-extensionapplication/vnd.ms-cab-compressedapplication/vnd.debian.binary-packageapplication/x-unix-archiveapplication/x-compressapplication/x-lzipapplication/x-rpmapplication/x-executableapplication/dicomapplication/mswordapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentapplication/vnd.ms-excelapplication/vnd.openxmlformats-officedocument.spreadsheetml.sheetapplication/vnd.ms-powerpointapplication/vnd.openxmlformats-officedocument.presentationml.presentationapplication/font-woffapplication/font-woffapplication/font-sfntapplication/font-sfntapplication/wasmapplication/vnd.android.dexapplication/vnd.android.deyapplication/vnd.apache.parquetMeasured using real files.
Environment: OSX x64 i7 2.7 Ghz
BenchmarkMatchTar-8 1000000 1083 ns/op
BenchmarkMatchZip-8 1000000 1162 ns/op
BenchmarkMatchJpeg-8 1000000 1280 ns/op
BenchmarkMatchGif-8 1000000 1315 ns/op
BenchmarkMatchPng-8 1000000 1121 ns/opMIT - Tomas Aparicio
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