diff --git a/pkg/serverconfigs/http_page_optimization_config.go b/pkg/serverconfigs/http_page_optimization_config.go
index 6e87b3c..a6cc88d 100644
--- a/pkg/serverconfigs/http_page_optimization_config.go
+++ b/pkg/serverconfigs/http_page_optimization_config.go
@@ -2,17 +2,6 @@
 
 package serverconfigs
 
-import (
-	"bytes"
-	"github.com/iwind/TeaGo/types"
-	"github.com/tdewolff/minify/v2"
-	"io"
-	"net/http"
-	"strings"
-)
-
-var httpPageOptimizationLimiter = make(chan bool, 64)
-
 type HTTPPageOptimizationMimeType = string
 
 const (
@@ -21,6 +10,10 @@ const (
 	HTTPPageOptimizationMimeTypeCSS        HTTPPageOptimizationMimeType = "text/css"
 )
 
+type HTTPPageMinifier interface {
+	Bytes(mediaType string, data []byte) ([]byte, error)
+}
+
 type HTTPPageOptimizationConfig struct {
 	IsPrior bool `yaml:"isPrior" json:"isPrior"`
 
@@ -28,8 +21,9 @@ type HTTPPageOptimizationConfig struct {
 	Javascript *HTTPJavascriptOptimizationConfig `yaml:"javascript" json:"javascript"`
 	CSS        *HTTPCSSOptimizationConfig        `yaml:"css" json:"css"`
 
-	isOn           bool
-	minifyInstance *minify.M
+	isOn bool
+
+	minifyInstance HTTPPageMinifier
 }
 
 func NewHTTPPageOptimizationConfig() *HTTPPageOptimizationConfig {
@@ -44,11 +38,6 @@ func NewHTTPPageOptimizationConfig() *HTTPPageOptimizationConfig {
 func (this *HTTPPageOptimizationConfig) Init() error {
 	this.isOn = this.CheckIsOn()
 
-	if this.isOn {
-		// MUST NOT create instance for every config
-		this.minifyInstance = minify.New()
-	}
-
 	if this.HTML != nil {
 		err := this.HTML.Init()
 		if err != nil {
@@ -56,8 +45,6 @@ func (this *HTTPPageOptimizationConfig) Init() error {
 		}
 		if this.HTML.IsOn {
 			this.isOn = true
-			this.minifyInstance.Add(HTTPPageOptimizationMimeTypeHTML, this.HTML.AsMinifier())
-
 		}
 	}
 	if this.Javascript != nil {
@@ -67,7 +54,6 @@ func (this *HTTPPageOptimizationConfig) Init() error {
 		}
 		if this.Javascript.IsOn {
 			this.isOn = true
-			this.minifyInstance.Add(HTTPPageOptimizationMimeTypeJavascript, this.Javascript.AsMinifier())
 		}
 	}
 	if this.CSS != nil {
@@ -77,7 +63,6 @@ func (this *HTTPPageOptimizationConfig) Init() error {
 		}
 		if this.CSS.IsOn {
 			this.isOn = true
-			this.minifyInstance.Add(HTTPPageOptimizationMimeTypeCSS, this.CSS.AsMinifier())
 		}
 	}
 
@@ -94,78 +79,10 @@ func (this *HTTPPageOptimizationConfig) CheckIsOn() bool {
 		(this.CSS != nil && this.CSS.IsOn)
 }
 
-func (this *HTTPPageOptimizationConfig) FilterResponse(url string, resp *http.Response) error {
-	if !this.isOn || this.minifyInstance == nil {
-		return nil
-	}
-
-	var contentType = resp.Header.Get("Content-Type")
-	if len(contentType) == 0 {
-		return nil
-	}
-
-	// validate content length
-	if resp.ContentLength <= 0 || resp.ContentLength > (1<<20) {
-		return nil
-	}
-
-	contentType, _, _ = strings.Cut(contentType, ";")
-	var mimeType = ""
-	switch contentType {
-	case "text/html":
-		if this.HTML != nil && this.HTML.IsOn && this.HTML.MatchURL(url) {
-			mimeType = HTTPPageOptimizationMimeTypeHTML
-		}
-	case "text/javascript", "application/javascript":
-		if this.Javascript != nil && this.Javascript.IsOn && this.Javascript.MatchURL(url) {
-			mimeType = HTTPPageOptimizationMimeTypeJavascript
-		}
-	case "text/css":
-		if this.CSS != nil && this.CSS.IsOn && this.CSS.MatchURL(url) {
-			mimeType = HTTPPageOptimizationMimeTypeCSS
-		}
-	default:
-		return nil
-	}
-
-	if len(mimeType) == 0 {
-		return nil
-	}
-
-	// concurrent limiter, to prevent memory overflow
-	select {
-	case httpPageOptimizationLimiter <- true:
-		defer func() {
-			<-httpPageOptimizationLimiter
-		}()
-
-		var contentLength int64
-		var err error
-		resp.Body, contentLength, err = this.minify(mimeType, resp.Body)
-		if err != nil {
-			return err
-		}
-
-		// fix resp.ContentLength and Content-Length header
-		resp.ContentLength = contentLength
-		resp.Header.Set("Content-Length", types.String(contentLength))
-	default:
-	}
-	return nil
+func (this *HTTPPageOptimizationConfig) InternalInstance() HTTPPageMinifier {
+	return this.minifyInstance
 }
 
-func (this *HTTPPageOptimizationConfig) minify(mimeType HTTPPageOptimizationMimeType, rawReader io.ReadCloser) (newReader io.ReadCloser, newContentLength int64, err error) {
-
-	var rawData []byte
-	rawData, err = io.ReadAll(rawReader)
-	if err != nil {
-		return
-	}
-
-	resultData, err := this.minifyInstance.Bytes(mimeType, rawData)
-	if err != nil {
-		return io.NopCloser(bytes.NewReader(rawData)), int64(len(rawData)), nil // return rawData, and ignore error
-	}
-
-	return io.NopCloser(bytes.NewReader(resultData)), int64(len(resultData)), nil
+func (this *HTTPPageOptimizationConfig) SetInternalInstance(instance HTTPPageMinifier) {
+	this.minifyInstance = instance
 }
diff --git a/pkg/serverconfigs/http_page_optimization_css.go b/pkg/serverconfigs/http_page_optimization_css.go
index 01d2339..bb5ec22 100644
--- a/pkg/serverconfigs/http_page_optimization_css.go
+++ b/pkg/serverconfigs/http_page_optimization_css.go
@@ -2,8 +2,6 @@
 
 package serverconfigs
 
-import "github.com/tdewolff/minify/v2/css"
-
 type HTTPCSSOptimizationConfig struct {
 	HTTPBaseOptimizationConfig
 
@@ -26,10 +24,3 @@ func (this *HTTPCSSOptimizationConfig) Init() error {
 	}
 	return nil
 }
-
-func (this *HTTPCSSOptimizationConfig) AsMinifier() *css.Minifier {
-	return &css.Minifier{
-		KeepCSS2:  this.KeepCSS2,
-		Precision: this.Precision,
-	}
-}
diff --git a/pkg/serverconfigs/http_page_optimization_html.go b/pkg/serverconfigs/http_page_optimization_html.go
index 5361cad..fb603a9 100644
--- a/pkg/serverconfigs/http_page_optimization_html.go
+++ b/pkg/serverconfigs/http_page_optimization_html.go
@@ -2,10 +2,6 @@
 
 package serverconfigs
 
-import (
-	"github.com/tdewolff/minify/v2/html"
-)
-
 type HTTPHTMLOptimizationConfig struct {
 	HTTPBaseOptimizationConfig
 
@@ -36,15 +32,3 @@ func (this *HTTPHTMLOptimizationConfig) Init() error {
 	}
 	return nil
 }
-
-func (this *HTTPHTMLOptimizationConfig) AsMinifier() *html.Minifier {
-	return &html.Minifier{
-		KeepComments:            this.KeepComments,
-		KeepConditionalComments: this.KeepConditionalComments,
-		KeepDefaultAttrVals:     this.KeepDefaultAttrVals,
-		KeepDocumentTags:        this.KeepDocumentTags,
-		KeepEndTags:             this.KeepEndTags,
-		KeepQuotes:              this.KeepQuotes,
-		KeepWhitespace:          this.KeepWhitespace,
-	}
-}
diff --git a/pkg/serverconfigs/http_page_optimization_javascript.go b/pkg/serverconfigs/http_page_optimization_javascript.go
index 4e3ff31..00f290e 100644
--- a/pkg/serverconfigs/http_page_optimization_javascript.go
+++ b/pkg/serverconfigs/http_page_optimization_javascript.go
@@ -2,8 +2,6 @@
 
 package serverconfigs
 
-import "github.com/tdewolff/minify/v2/js"
-
 type HTTPJavascriptOptimizationConfig struct {
 	HTTPBaseOptimizationConfig
 
@@ -25,11 +23,3 @@ func (this *HTTPJavascriptOptimizationConfig) Init() error {
 	}
 	return nil
 }
-
-func (this *HTTPJavascriptOptimizationConfig) AsMinifier() *js.Minifier {
-	return &js.Minifier{
-		Precision:    this.Precision,
-		KeepVarNames: this.KeepVarNames,
-		Version:      this.Version,
-	}
-}