diff --git a/cmd/skopeo/inspect.go b/cmd/skopeo/inspect.go
index e77cfa89..880bda91 100644
--- a/cmd/skopeo/inspect.go
+++ b/cmd/skopeo/inspect.go
@@ -23,7 +23,7 @@ var inspectCmd = cli.Command{
 			logrus.Fatal(err)
 		}
 		if c.Bool("raw") {
-			b, err := img.GetManifest()
+			b, err := img.Manifest()
 			if err != nil {
 				logrus.Fatal(err)
 			}
diff --git a/docker/docker_image.go b/docker/docker_image.go
index 9b9245b6..c9ab31b8 100644
--- a/docker/docker_image.go
+++ b/docker/docker_image.go
@@ -22,7 +22,7 @@ type dockerImage struct {
 	src              *dockerImageSource
 	digest           string
 	rawManifest      []byte
-	cachedSignatures [][]byte // Private cache for GetSignatures; nil if not yet known.
+	cachedSignatures [][]byte // Private cache for Signatures(); nil if not yet known.
 }
 
 // NewDockerImage returns a new Image interface type after setting up
@@ -42,16 +42,16 @@ func (i *dockerImage) GetIntendedDockerReference() string {
 	return i.src.GetIntendedDockerReference()
 }
 
-// GetManifest is like ImageSource.GetManifest, but the result is cached; it is OK to call this however often you need.
-func (i *dockerImage) GetManifest() ([]byte, error) {
+// Manifest is like ImageSource.GetManifest, but the result is cached; it is OK to call this however often you need.
+func (i *dockerImage) Manifest() ([]byte, error) {
 	if err := i.retrieveRawManifest(); err != nil {
 		return nil, err
 	}
 	return i.rawManifest, nil
 }
 
-// GetSignatures is like ImageSource.GetSignatures, but the result is cached; it is OK to call this however often you need.
-func (i *dockerImage) GetSignatures() ([][]byte, error) {
+// Signatures is like ImageSource.GetSignatures, but the result is cached; it is OK to call this however often you need.
+func (i *dockerImage) Signatures() ([][]byte, error) {
 	if i.cachedSignatures == nil {
 		sigs, err := i.src.GetSignatures()
 		if err != nil {
diff --git a/types/types.go b/types/types.go
index f88c6c14..a8f0e82c 100644
--- a/types/types.go
+++ b/types/types.go
@@ -34,8 +34,10 @@ type ImageSource interface {
 	// (not as the image itself, or its underlying storage, claims).  This can be used e.g. to determine which public keys are trusted for this image.
 	// May be "" if unknown.
 	GetIntendedDockerReference() string
+	// GetManifest returns the image's manifest.  It may use a remote (= slow) service.
 	GetManifest() (manifest []byte, unverifiedCanonicalDigest string, err error)
 	GetLayer(digest string) (io.ReadCloser, error)
+	// GetSignatures returns the image's signatures.  It may use a remote (= slow) service.
 	GetSignatures() ([][]byte, error)
 }
 
@@ -55,10 +57,10 @@ type Image interface {
 	// (not as the image itself, or its underlying storage, claims).  This can be used e.g. to determine which public keys are trusted for this image.
 	// May be "" if unknown.
 	GetIntendedDockerReference() string
-	// GetManifest is like ImageSource.GetManifest, but the result is cached; it is OK to call this however often you need.
-	GetManifest() ([]byte, error)
-	// GetSignatures is like ImageSource.GetSignatures, but the result is cached; it is OK to call this however often you need.
-	GetSignatures() ([][]byte, error)
+	// Manifest is like ImageSource.GetManifest, but the result is cached; it is OK to call this however often you need.
+	Manifest() ([]byte, error)
+	// Signatures is like ImageSource.GetSignatures, but the result is cached; it is OK to call this however often you need.
+	Signatures() ([][]byte, error)
 	Layers(layers ...string) error // configure download directory? Call it DownloadLayers?
 	Inspect() (ImageManifest, error)
 	DockerTar() ([]byte, error) // ??? also, configure output directory