diff --git a/scripts/docupdater/docupdater.go b/scripts/docupdater/docupdater.go
new file mode 100644
index 0000000..fdfc4c7
--- /dev/null
+++ b/scripts/docupdater/docupdater.go
@@ -0,0 +1,94 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"regexp"
+	"strings"
+)
+
+type DocOpDefinition struct {
+	ProjectName           string
+	SourceDocUrl          string
+	SourceDocSectionRegex string
+	TargetDocURL          string
+	TargetDocSectionRegex string
+}
+
+var DocOpDefinitions = []DocOpDefinition{
+	{
+		ProjectName:           "subfinder",
+		SourceDocUrl:          "https://raw.githubusercontent.com/projectdiscovery/subfinder/main/README.md",
+		SourceDocSectionRegex: `(?s)##?\s+Usage\n(.*?)(\n##?|\z)`,
+		TargetDocURL:          "tools/subfinder/usage.mdx",
+		TargetDocSectionRegex: `(?s)##?\s+Subfinder help options\n(.*?)(\n##?|\z)`,
+	},
+}
+
+func main() {
+	updateDoc()
+}
+
+func updateDoc() {
+	for _, def := range DocOpDefinitions {
+		sourceDoc, err := fetchDoc(def.SourceDocUrl)
+		if err != nil {
+			fmt.Println("Error fetching source doc:", err)
+			return
+		}
+		targetDoc, err := readDoc(def.TargetDocURL)
+		if err != nil {
+			fmt.Println("Error fetching target doc:", err)
+			return
+		}
+
+		updatedDoc := replaceSection(sourceDoc, def.SourceDocSectionRegex, targetDoc, def.TargetDocSectionRegex)
+		_ = writeDoc(def.TargetDocURL, updatedDoc)
+	}
+}
+
+func fetchDoc(url string) (string, error) {
+	resp, err := http.Get(url)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("failed to fetch file: %s", resp.Status)
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+
+	return string(body), nil
+}
+
+func readDoc(path string) (string, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return "", err
+	}
+	return string(data), nil
+}
+
+func writeDoc(path, data string) error {
+	return os.WriteFile(path, []byte(data), 0644)
+}
+
+func replaceSection(sourceDoc, sourceDocSectionRegex, targetDoc, targetDocSectionRegex string) string {
+	sourceRe := regexp.MustCompile(sourceDocSectionRegex)
+	targetRe := regexp.MustCompile(targetDocSectionRegex)
+
+	sourceMatch := sourceRe.FindStringSubmatch(sourceDoc)
+	targetMatch := targetRe.FindStringSubmatch(targetDoc)
+	if len(sourceMatch) == 0 || len(targetMatch) == 0 {
+		return targetDoc
+	}
+
+	return strings.Replace(targetDoc, targetMatch[1], sourceMatch[1], 1)
+}