diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 110691cbc..63795452f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -229,8 +229,8 @@ All tests are automated.
 
 The ['Checks' document](./docs/checks.md) is a large document to explain all checks by actionlint.
 
-This document is maintained with [`update-checks-doc`](./scripts/update-checks-doc) script. This script automatically updates
+This document is maintained with [`check-checks`](./scripts/check-checks) script. This script automatically updates
 the code blocks after `Output:` and the `Playground` links. This script should be run after modifying the document.
 
-Please see [the readme of the script](./scripts/update-checks-doc/README.md) for the usage and knowing the details of the
+Please see [the readme of the script](./scripts/check-checks/README.md) for the usage and knowing the details of the
 document format that this script assumes.
diff --git a/Makefile b/Makefile
index 5a5911d9b..9e0d8a9d3 100644
--- a/Makefile
+++ b/Makefile
@@ -26,7 +26,7 @@ t test: .testtimestamp
 .staticchecktimestamp: $(TESTS) $(SRCS) $(TOOL)
 	staticcheck ./...
 	GOOS=js GOARCH=wasm staticcheck ./playground
-	go run ./scripts/update-checks-doc -check -quiet ./docs/checks.md
+	go run ./scripts/check-checks -quiet ./docs/checks.md
 	touch .staticchecktimestamp
 
 l lint: .staticchecktimestamp
diff --git a/scripts/update-checks-doc/.gitignore b/scripts/check-checks/.gitignore
similarity index 100%
rename from scripts/update-checks-doc/.gitignore
rename to scripts/check-checks/.gitignore
diff --git a/scripts/update-checks-doc/README.md b/scripts/check-checks/README.md
similarity index 90%
rename from scripts/update-checks-doc/README.md
rename to scripts/check-checks/README.md
index a0e26993a..7bae49b94 100644
--- a/scripts/update-checks-doc/README.md
+++ b/scripts/check-checks/README.md
@@ -1,5 +1,5 @@
-update-checks-doc
-=================
+check-checks
+============
 
 This is a script to maintain [the 'Checks' document](../../docs/checks.md).
 
@@ -21,19 +21,19 @@ For making the implementation simple, this script does not support Windows.
 ## Usage
 
 ```
-go run ./scripts/update-checks-doc [-check] FILE
+go run ./scripts/check-checks [FLAGS] FILE
 ```
 
-Update the document. This command directly modifies the file.
+Check the document is up-to-date.
 
 ```sh
-go run ./scripts/update-checks-doc ./docs/checks.md
+go run ./scripts/check-checks ./docs/checks.md
 ```
 
-Check the document is up-to-date.
+Update the document. This command directly modifies the file.
 
 ```sh
-go run ./scripts/update-checks-doc -check ./docs/checks.md
+go run ./scripts/check-checks -fix ./docs/checks.md
 ```
 
 The check is run on the [CI workflow](../../.github/workflows/ci.yaml).
diff --git a/scripts/update-checks-doc/main.go b/scripts/check-checks/main.go
similarity index 97%
rename from scripts/update-checks-doc/main.go
rename to scripts/check-checks/main.go
index dadf6d21e..818032f1a 100644
--- a/scripts/update-checks-doc/main.go
+++ b/scripts/check-checks/main.go
@@ -316,14 +316,14 @@ func Update(in []byte) ([]byte, error) {
 var stderr io.Writer = os.Stderr
 
 func Main(args []string) error {
-	var check bool
+	var fix bool
 	var quiet bool
 	flags := flag.NewFlagSet(args[0], flag.ContinueOnError)
-	flags.BoolVar(&check, "check", false, "check the document is up-to-date")
+	flags.BoolVar(&fix, "fix", false, "fix the outdated document automatically")
 	flags.BoolVar(&quiet, "quiet", false, "disable trace logs")
 	flags.SetOutput(stderr)
 	flags.Usage = func() {
-		fmt.Fprintln(stderr, "Usage: update-checks-doc [FLAGS] FILE\n\nFlags:")
+		fmt.Fprintln(stderr, "Usage: check-checks [FLAGS] FILE\n\nFlags:")
 		flags.PrintDefaults()
 	}
 
@@ -358,8 +358,8 @@ func Main(args []string) error {
 		return nil
 	}
 
-	if check {
-		return fmt.Errorf("checks document has some update. run `go run ./scripts/update-checks-doc %s` and commit the changes. the diff:\n\n%s", path, cmp.Diff(in, out))
+	if !fix {
+		return fmt.Errorf("checks document has some update. run `go run ./scripts/check-checks -fix %s` and commit the changes on Linux or macOS. the diff:\n\n%s", path, cmp.Diff(in, out))
 	}
 
 	log.Printf("Overwrite the file with the updated content (%d bytes) at %q", len(out), path)
diff --git a/scripts/update-checks-doc/main_test.go b/scripts/check-checks/main_test.go
similarity index 82%
rename from scripts/update-checks-doc/main_test.go
rename to scripts/check-checks/main_test.go
index f34691145..576b2584a 100644
--- a/scripts/update-checks-doc/main_test.go
+++ b/scripts/check-checks/main_test.go
@@ -41,7 +41,7 @@ func testErr(t *testing.T, err error, want ...string) {
 
 func TestMainGenerateOK(t *testing.T) {
 	if runtime.GOOS == "windows" {
-		t.Skip("update-checks-doc doesn't support Windows")
+		t.Skip("check-checks doesn't support Windows")
 	}
 	root := t.TempDir()
 
@@ -52,7 +52,7 @@ func TestMainGenerateOK(t *testing.T) {
 	in.Close()
 	tmp.Close()
 
-	if err := Main([]string{"exe", path}); err != nil {
+	if err := Main([]string{"exe", "-fix", path}); err != nil {
 		t.Fatal(err)
 	}
 
@@ -65,20 +65,20 @@ func TestMainGenerateOK(t *testing.T) {
 
 func TestMainCheckOK(t *testing.T) {
 	if runtime.GOOS == "windows" {
-		t.Skip("update-checks-doc doesn't support Windows")
+		t.Skip("check-checks doesn't support Windows")
 	}
 	path := filepath.FromSlash("testdata/ok/minimal.out")
-	if err := Main([]string{"exe", "-check", path}); err != nil {
+	if err := Main([]string{"exe", path}); err != nil {
 		t.Fatal(err)
 	}
 }
 
 func TestMainCheckQuietOK(t *testing.T) {
 	if runtime.GOOS == "windows" {
-		t.Skip("update-checks-doc doesn't support Windows")
+		t.Skip("check-checks doesn't support Windows")
 	}
 	path := filepath.FromSlash("testdata/ok/minimal.out")
-	if err := Main([]string{"exe", "-check", "-quiet", path}); err != nil {
+	if err := Main([]string{"exe", "-quiet", path}); err != nil {
 		t.Fatal(err)
 	}
 }
@@ -91,14 +91,14 @@ func TestMainPrintHelp(t *testing.T) {
 
 func TestMainCheckError(t *testing.T) {
 	if runtime.GOOS == "windows" {
-		t.Skip("update-checks-doc doesn't support Windows")
+		t.Skip("check-checks doesn't support Windows")
 	}
 	path := filepath.FromSlash("testdata/ok/minimal.in")
-	testErr(t, Main([]string{"exe", "-check", path}), "checks document has some update")
+	testErr(t, Main([]string{"exe", path}), "checks document has some update")
 }
 
 func TestMainFileNotFound(t *testing.T) {
-	testErr(t, Main([]string{"exe", "-check", "this-file-does-not-exist.md"}), "could not read the document file")
+	testErr(t, Main([]string{"exe", "this-file-does-not-exist.md"}), "could not read the document file")
 }
 
 func TestMainTooManyArgs(t *testing.T) {
@@ -109,16 +109,6 @@ func TestMainInvalidCheckFlag(t *testing.T) {
 	testErr(t, Main([]string{"exe", "-c", "foo.md"}), "flag provided but not defined")
 }
 
-func TestMainNoUpdate(t *testing.T) {
-	if runtime.GOOS == "windows" {
-		t.Skip("update-checks-doc doesn't support Windows")
-	}
-	path := filepath.FromSlash("testdata/ok/minimal.out")
-	if err := Main([]string{"exe", path}); err != nil {
-		t.Fatal(err)
-	}
-}
-
 func TestMainUpdateError(t *testing.T) {
 	path := filepath.FromSlash("testdata/err/no_playground_link.md")
 	if err := Main([]string{"exe", path}); err == nil {
@@ -128,7 +118,7 @@ func TestMainUpdateError(t *testing.T) {
 
 func TestUpdateOK(t *testing.T) {
 	if runtime.GOOS == "windows" {
-		t.Skip("update-checks-doc doesn't support Windows")
+		t.Skip("check-checks doesn't support Windows")
 	}
 
 	dir := filepath.FromSlash("testdata/ok")
diff --git a/scripts/update-checks-doc/testdata/err/duplicate_id.md b/scripts/check-checks/testdata/err/duplicate_id.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/duplicate_id.md
rename to scripts/check-checks/testdata/err/duplicate_id.md
diff --git a/scripts/update-checks-doc/testdata/err/duplicate_title.md b/scripts/check-checks/testdata/err/duplicate_title.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/duplicate_title.md
rename to scripts/check-checks/testdata/err/duplicate_title.md
diff --git a/scripts/update-checks-doc/testdata/err/empty.md b/scripts/check-checks/testdata/err/empty.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/empty.md
rename to scripts/check-checks/testdata/err/empty.md
diff --git a/scripts/update-checks-doc/testdata/err/empty_anchor_id.md b/scripts/check-checks/testdata/err/empty_anchor_id.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/empty_anchor_id.md
rename to scripts/check-checks/testdata/err/empty_anchor_id.md
diff --git a/scripts/update-checks-doc/testdata/err/empty_input.md b/scripts/check-checks/testdata/err/empty_input.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/empty_input.md
rename to scripts/check-checks/testdata/err/empty_input.md
diff --git a/scripts/update-checks-doc/testdata/err/empty_input_with_skip_output.md b/scripts/check-checks/testdata/err/empty_input_with_skip_output.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/empty_input_with_skip_output.md
rename to scripts/check-checks/testdata/err/empty_input_with_skip_output.md
diff --git a/scripts/update-checks-doc/testdata/err/empty_input_with_skip_output_and_playground.md b/scripts/check-checks/testdata/err/empty_input_with_skip_output_and_playground.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/empty_input_with_skip_output_and_playground.md
rename to scripts/check-checks/testdata/err/empty_input_with_skip_output_and_playground.md
diff --git a/scripts/update-checks-doc/testdata/err/empty_input_with_skip_playground.md b/scripts/check-checks/testdata/err/empty_input_with_skip_playground.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/empty_input_with_skip_playground.md
rename to scripts/check-checks/testdata/err/empty_input_with_skip_playground.md
diff --git a/scripts/update-checks-doc/testdata/err/missing_output_and_playground_link.md b/scripts/check-checks/testdata/err/missing_output_and_playground_link.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/missing_output_and_playground_link.md
rename to scripts/check-checks/testdata/err/missing_output_and_playground_link.md
diff --git a/scripts/update-checks-doc/testdata/err/missing_output_block.md b/scripts/check-checks/testdata/err/missing_output_block.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/missing_output_block.md
rename to scripts/check-checks/testdata/err/missing_output_block.md
diff --git a/scripts/update-checks-doc/testdata/err/missing_output_header.md b/scripts/check-checks/testdata/err/missing_output_header.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/missing_output_header.md
rename to scripts/check-checks/testdata/err/missing_output_header.md
diff --git a/scripts/update-checks-doc/testdata/err/missing_playground_link.md b/scripts/check-checks/testdata/err/missing_playground_link.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/missing_playground_link.md
rename to scripts/check-checks/testdata/err/missing_playground_link.md
diff --git a/scripts/update-checks-doc/testdata/err/no_error.md b/scripts/check-checks/testdata/err/no_error.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/no_error.md
rename to scripts/check-checks/testdata/err/no_error.md
diff --git a/scripts/update-checks-doc/testdata/err/no_example.md b/scripts/check-checks/testdata/err/no_example.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/no_example.md
rename to scripts/check-checks/testdata/err/no_example.md
diff --git a/scripts/update-checks-doc/testdata/err/no_input.md b/scripts/check-checks/testdata/err/no_input.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/no_input.md
rename to scripts/check-checks/testdata/err/no_input.md
diff --git a/scripts/update-checks-doc/testdata/err/no_input_with_skip_output.md b/scripts/check-checks/testdata/err/no_input_with_skip_output.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/no_input_with_skip_output.md
rename to scripts/check-checks/testdata/err/no_input_with_skip_output.md
diff --git a/scripts/update-checks-doc/testdata/err/no_input_with_skip_output_and_playground.md b/scripts/check-checks/testdata/err/no_input_with_skip_output_and_playground.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/no_input_with_skip_output_and_playground.md
rename to scripts/check-checks/testdata/err/no_input_with_skip_output_and_playground.md
diff --git a/scripts/update-checks-doc/testdata/err/no_input_with_skip_playground.md b/scripts/check-checks/testdata/err/no_input_with_skip_playground.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/no_input_with_skip_playground.md
rename to scripts/check-checks/testdata/err/no_input_with_skip_playground.md
diff --git a/scripts/update-checks-doc/testdata/err/no_output.md b/scripts/check-checks/testdata/err/no_output.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/no_output.md
rename to scripts/check-checks/testdata/err/no_output.md
diff --git a/scripts/update-checks-doc/testdata/err/no_playground_link.md b/scripts/check-checks/testdata/err/no_playground_link.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/no_playground_link.md
rename to scripts/check-checks/testdata/err/no_playground_link.md
diff --git a/scripts/update-checks-doc/testdata/err/too_long_input_line.md b/scripts/check-checks/testdata/err/too_long_input_line.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/too_long_input_line.md
rename to scripts/check-checks/testdata/err/too_long_input_line.md
diff --git a/scripts/update-checks-doc/testdata/err/unclosed_example_input.md b/scripts/check-checks/testdata/err/unclosed_example_input.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/unclosed_example_input.md
rename to scripts/check-checks/testdata/err/unclosed_example_input.md
diff --git a/scripts/update-checks-doc/testdata/err/unclosed_output.md b/scripts/check-checks/testdata/err/unclosed_output.md
similarity index 100%
rename from scripts/update-checks-doc/testdata/err/unclosed_output.md
rename to scripts/check-checks/testdata/err/unclosed_output.md
diff --git a/scripts/update-checks-doc/testdata/ok/minimal.in b/scripts/check-checks/testdata/ok/minimal.in
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/minimal.in
rename to scripts/check-checks/testdata/ok/minimal.in
diff --git a/scripts/update-checks-doc/testdata/ok/minimal.out b/scripts/check-checks/testdata/ok/minimal.out
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/minimal.out
rename to scripts/check-checks/testdata/ok/minimal.out
diff --git a/scripts/update-checks-doc/testdata/ok/multi_examples.in b/scripts/check-checks/testdata/ok/multi_examples.in
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/multi_examples.in
rename to scripts/check-checks/testdata/ok/multi_examples.in
diff --git a/scripts/update-checks-doc/testdata/ok/multi_examples.out b/scripts/check-checks/testdata/ok/multi_examples.out
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/multi_examples.out
rename to scripts/check-checks/testdata/ok/multi_examples.out
diff --git a/scripts/update-checks-doc/testdata/ok/multi_sections.in b/scripts/check-checks/testdata/ok/multi_sections.in
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/multi_sections.in
rename to scripts/check-checks/testdata/ok/multi_sections.in
diff --git a/scripts/update-checks-doc/testdata/ok/multi_sections.out b/scripts/check-checks/testdata/ok/multi_sections.out
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/multi_sections.out
rename to scripts/check-checks/testdata/ok/multi_sections.out
diff --git a/scripts/update-checks-doc/testdata/ok/replace_absolute_path.in b/scripts/check-checks/testdata/ok/replace_absolute_path.in
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/replace_absolute_path.in
rename to scripts/check-checks/testdata/ok/replace_absolute_path.in
diff --git a/scripts/update-checks-doc/testdata/ok/replace_absolute_path.out b/scripts/check-checks/testdata/ok/replace_absolute_path.out
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/replace_absolute_path.out
rename to scripts/check-checks/testdata/ok/replace_absolute_path.out
diff --git a/scripts/update-checks-doc/testdata/ok/skip_output.in b/scripts/check-checks/testdata/ok/skip_output.in
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/skip_output.in
rename to scripts/check-checks/testdata/ok/skip_output.in
diff --git a/scripts/update-checks-doc/testdata/ok/skip_output.out b/scripts/check-checks/testdata/ok/skip_output.out
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/skip_output.out
rename to scripts/check-checks/testdata/ok/skip_output.out
diff --git a/scripts/update-checks-doc/testdata/ok/skip_output_and_playground.in b/scripts/check-checks/testdata/ok/skip_output_and_playground.in
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/skip_output_and_playground.in
rename to scripts/check-checks/testdata/ok/skip_output_and_playground.in
diff --git a/scripts/update-checks-doc/testdata/ok/skip_output_and_playground.out b/scripts/check-checks/testdata/ok/skip_output_and_playground.out
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/skip_output_and_playground.out
rename to scripts/check-checks/testdata/ok/skip_output_and_playground.out
diff --git a/scripts/update-checks-doc/testdata/ok/skip_playground.in b/scripts/check-checks/testdata/ok/skip_playground.in
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/skip_playground.in
rename to scripts/check-checks/testdata/ok/skip_playground.in
diff --git a/scripts/update-checks-doc/testdata/ok/skip_playground.out b/scripts/check-checks/testdata/ok/skip_playground.out
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/skip_playground.out
rename to scripts/check-checks/testdata/ok/skip_playground.out
diff --git a/scripts/update-checks-doc/testdata/ok/strip_comment_playground_link.in b/scripts/check-checks/testdata/ok/strip_comment_playground_link.in
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/strip_comment_playground_link.in
rename to scripts/check-checks/testdata/ok/strip_comment_playground_link.in
diff --git a/scripts/update-checks-doc/testdata/ok/strip_comment_playground_link.out b/scripts/check-checks/testdata/ok/strip_comment_playground_link.out
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/strip_comment_playground_link.out
rename to scripts/check-checks/testdata/ok/strip_comment_playground_link.out
diff --git a/scripts/update-checks-doc/testdata/ok/unknown_anchors.in b/scripts/check-checks/testdata/ok/unknown_anchors.in
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/unknown_anchors.in
rename to scripts/check-checks/testdata/ok/unknown_anchors.in
diff --git a/scripts/update-checks-doc/testdata/ok/unknown_anchors.out b/scripts/check-checks/testdata/ok/unknown_anchors.out
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/unknown_anchors.out
rename to scripts/check-checks/testdata/ok/unknown_anchors.out
diff --git a/scripts/update-checks-doc/testdata/ok/unknown_code_blocks.in b/scripts/check-checks/testdata/ok/unknown_code_blocks.in
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/unknown_code_blocks.in
rename to scripts/check-checks/testdata/ok/unknown_code_blocks.in
diff --git a/scripts/update-checks-doc/testdata/ok/unknown_code_blocks.out b/scripts/check-checks/testdata/ok/unknown_code_blocks.out
similarity index 100%
rename from scripts/update-checks-doc/testdata/ok/unknown_code_blocks.out
rename to scripts/check-checks/testdata/ok/unknown_code_blocks.out