@@ -6,6 +6,7 @@ "fmt"
 	"hash/fnv"
 	"io"
 	"mime"
+	"net/http"
 	"path/filepath"
 	"time"
 
@@ -130,6 +131,10 @@ return r.LastInsertId()
 }
 
 func (s *Writer) storeFile(urlID int64, file *storage.File) (int64, error) {
+	if file.ContentType == "" {
+		file.ContentType = http.DetectContentType(file.Encodings["identity"].Bytes())
+		s.log.Warn("file has no content type, sniffing", "path", file.Path, "sniffed", file.ContentType)
+	}
 	r, err := s.queries.insertFile.Exec(
 		sql.Named("url_id", urlID),
 		sql.Named("content_type", file.ContentType),