diff --git a/cmd/cli/commands/search.go b/cmd/cli/commands/search.go
index 5c78204d2..8a8a21263 100644
--- a/cmd/cli/commands/search.go
+++ b/cmd/cli/commands/search.go
@@ -4,9 +4,9 @@ import (
 	"bytes"
 	"fmt"
 
-	"github.com/docker/go-units"
 	"github.com/docker/model-runner/cmd/cli/commands/formatter"
 	"github.com/docker/model-runner/cmd/cli/search"
+	"github.com/docker/model-runner/pkg/distribution/format"
 	"github.com/spf13/cobra"
 )
 
@@ -106,7 +106,7 @@ func prettyPrintSearchResults(results []search.SearchResult) string {
 			name,
 			r.Description,
 			r.Backend,
-			formatSize(r.Size),
+			format.FormatSize(r.Size),
 			formatCount(r.Downloads),
 			formatCount(r.Stars),
 			r.Source,
@@ -127,11 +127,3 @@ func formatCount(n int64) string {
 	}
 	return fmt.Sprintf("%d", n)
 }
-
-// formatSize formats a byte count as a human-readable size string
-func formatSize(n int64) string {
-	if n <= 0 {
-		return "n/a"
-	}
-	return units.CustomSize("%.2f%s", float64(n), 1000.0, []string{"B", "kB", "MB", "GB", "TB"})
-}
diff --git a/cmd/cli/commands/search_test.go b/cmd/cli/commands/search_test.go
index a38157d69..3177a3186 100644
--- a/cmd/cli/commands/search_test.go
+++ b/cmd/cli/commands/search_test.go
@@ -4,30 +4,6 @@ import (
 	"testing"
 )
 
-func TestFormatSize(t *testing.T) {
-	tests := []struct {
-		name  string
-		input int64
-		want  string
-	}{
-		{name: "zero returns n/a", input: 0, want: "n/a"},
-		{name: "negative returns n/a", input: -1, want: "n/a"},
-		{name: "bytes", input: 500, want: "500.00B"},
-		{name: "kilobytes", input: 1500, want: "1.50kB"},
-		{name: "megabytes", input: 2_500_000, want: "2.50MB"},
-		{name: "gigabytes", input: 4_300_000_000, want: "4.30GB"},
-		{name: "terabytes", input: 1_200_000_000_000, want: "1.20TB"},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			if got := formatSize(tt.input); got != tt.want {
-				t.Errorf("formatSize(%d) = %q, want %q", tt.input, got, tt.want)
-			}
-		})
-	}
-}
-
 func TestFormatCount(t *testing.T) {
 	tests := []struct {
 		name  string
diff --git a/cmd/cli/search/backend_resolution.go b/cmd/cli/search/backend_resolution.go
index 3e7075f58..eb1fabc55 100644
--- a/cmd/cli/search/backend_resolution.go
+++ b/cmd/cli/search/backend_resolution.go
@@ -92,7 +92,8 @@ func (r *huggingFaceRepoBackendResolver) Resolve(ctx context.Context, target str
 	if err != nil {
 		return backendUnknown, 0, err
 	}
-	return backendFromRepoFiles(repoFiles), distributionhf.TotalSize(repoFiles), nil
+	modelFiles, _ := distributionhf.FilterModelFiles(repoFiles)
+	return backendFromRepoFiles(repoFiles), distributionhf.TotalSize(modelFiles), nil
 }
 
 func backendFromFormat(format disttypes.Format) string {
diff --git a/pkg/distribution/format/dduf.go b/pkg/distribution/format/dduf.go
index e0d42d2ec..0be7568ab 100644
--- a/pkg/distribution/format/dduf.go
+++ b/pkg/distribution/format/dduf.go
@@ -61,7 +61,7 @@ func (d *DDUFFormat) ExtractConfig(paths []string) (types.Config, error) {
 	return types.Config{
 		Format:       types.FormatDDUF,
 		Architecture: "diffusers",
-		Size:         formatSize(totalSize),
+		Size:         FormatSize(totalSize),
 		Diffusers: map[string]string{
 			"layout":    "dduf",
 			"dduf_file": ddufFile,
diff --git a/pkg/distribution/format/format.go b/pkg/distribution/format/format.go
index 9b6fbf24e..377939f10 100644
--- a/pkg/distribution/format/format.go
+++ b/pkg/distribution/format/format.go
@@ -103,8 +103,11 @@ func formatParameters(params int64) string {
 	return units.CustomSize("%.2f%s", float64(params), 1000.0, []string{"", "K", "M", "B", "T"})
 }
 
-// formatSize converts bytes to human-readable format matching Docker's style
-// Returns format like "256MB" (decimal units, no space, matching `docker images`)
-func formatSize(bytes int64) string {
+// FormatSize converts bytes to human-readable format matching Docker's style.
+// Returns "n/a" for zero or negative sizes, otherwise formats like "256MB".
+func FormatSize(bytes int64) string {
+	if bytes <= 0 {
+		return "n/a"
+	}
 	return units.CustomSize("%.2f%s", float64(bytes), 1000.0, []string{"B", "kB", "MB", "GB", "TB", "PB", "EB"})
 }
diff --git a/pkg/distribution/format/format_test.go b/pkg/distribution/format/format_test.go
index c248f840b..0aff23f3e 100644
--- a/pkg/distribution/format/format_test.go
+++ b/pkg/distribution/format/format_test.go
@@ -223,17 +223,22 @@ func TestFormatSize(t *testing.T) {
 		bytes int64
 		want  string
 	}{
-		{1000, "1.00kB"},
+		{0, "n/a"},
+		{-1, "n/a"},
+		{500, "500.00B"},
+		{1500, "1.50kB"},
 		{1000000, "1.00MB"},
+		{2_500_000, "2.50MB"},
 		{1000000000, "1.00GB"},
-		{5000000000, "5.00GB"},
+		{4_300_000_000, "4.30GB"},
+		{1_200_000_000_000, "1.20TB"},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.want, func(t *testing.T) {
-			got := formatSize(tt.bytes)
+			got := FormatSize(tt.bytes)
 			if got != tt.want {
-				t.Errorf("formatSize(%d) = %q, want %q", tt.bytes, got, tt.want)
+				t.Errorf("FormatSize(%d) = %q, want %q", tt.bytes, got, tt.want)
 			}
 		})
 	}
diff --git a/pkg/distribution/format/safetensors.go b/pkg/distribution/format/safetensors.go
index 530199aa9..c9ec3556e 100644
--- a/pkg/distribution/format/safetensors.go
+++ b/pkg/distribution/format/safetensors.go
@@ -130,7 +130,7 @@ func (s *SafetensorsFormat) ExtractConfig(paths []string) (types.Config, error)
 		Format:       types.FormatSafetensors,
 		Parameters:   formatParameters(params),
 		Quantization: header.getQuantization(),
-		Size:         formatSize(totalSize),
+		Size:         FormatSize(totalSize),
 		Architecture: architecture,
 		Safetensors:  header.extractMetadata(),
 		ContextSize:  contextSize,