diff --git a/src/form.cc b/src/form.cc
index 8524300..dfeac39 100644
--- a/src/form.cc
+++ b/src/form.cc
@@ -57,35 +57,11 @@ static Embed *Html_input_image(DilloHtml *html, const char *tag, int tagsize);
 
 static void Html_option_finish(DilloHtml *html);
 
-/*
- * Typedefs
- */
-
-typedef enum {
-   DILLO_HTML_INPUT_UNKNOWN,
-   DILLO_HTML_INPUT_TEXT,
-   DILLO_HTML_INPUT_PASSWORD,
-   DILLO_HTML_INPUT_CHECKBOX,
-   DILLO_HTML_INPUT_RADIO,
-   DILLO_HTML_INPUT_IMAGE,
-   DILLO_HTML_INPUT_FILE,
-   DILLO_HTML_INPUT_BUTTON,
-   DILLO_HTML_INPUT_HIDDEN,
-   DILLO_HTML_INPUT_SUBMIT,
-   DILLO_HTML_INPUT_RESET,
-   DILLO_HTML_INPUT_BUTTON_SUBMIT,
-   DILLO_HTML_INPUT_BUTTON_RESET,
-   DILLO_HTML_INPUT_SELECT,
-   DILLO_HTML_INPUT_SEL_LIST,
-   DILLO_HTML_INPUT_TEXTAREA,
-   DILLO_HTML_INPUT_INDEX
-} DilloHtmlInputType;
-
 /*
  * Class declarations
  */
 
-class DilloHtmlForm {
+class DilloHtmlFormImpl : public DilloHtmlForm {
    friend class DilloHtmlReceiver;
    friend class DilloHtmlInput;
 
@@ -111,28 +87,33 @@ class DilloHtmlForm {
 
 public:  //BUG: for now everything is public
    DilloHtmlMethod method;
+   DilloHtmlMethod get_method() const override { return method; }
+   
    DilloUrl *action;
    DilloHtmlEnc content_type;
+   DilloHtmlEnc get_content_type() const override { return content_type; }
    char *submit_charset;
 
    std::vector< std::shared_ptr< DilloHtmlInput > > inputs;
+   std::vector< std::shared_ptr< DilloHtmlInput > > *get_inputs() override { return &inputs; }
+
 
    int num_entry_fields;
 
    std::unique_ptr< DilloHtmlReceiver > form_receiver;
 
 public:
-   DilloHtmlForm (DilloHtml *html,
+   DilloHtmlFormImpl (DilloHtml *html,
                   DilloHtmlMethod method, const DilloUrl *action,
                   DilloHtmlEnc content_type, const char *charset,
                   bool enabled);
-   ~DilloHtmlForm ();
+   ~DilloHtmlFormImpl () override;
    std::shared_ptr< DilloHtmlInput > getInput (Resource *resource);
    std::shared_ptr< DilloHtmlInput > getRadioInput (const char *name);
    void submit(DilloHtmlInput *active_input, EventButton *event);
    void reset ();
    void display_hiddens(bool display);
-   void addInput(std::unique_ptr< DilloHtmlInput > input, DilloHtmlInputType type);
+   void addInput(std::unique_ptr< DilloHtmlInput > input, DilloHtmlInputType type) override;
    void setEnabled(bool enabled);
 };
 
@@ -141,11 +122,11 @@ class DilloHtmlReceiver:
    public Resource::ClickedReceiver
 {
 private:
-   friend class DilloHtmlForm;
-   DilloHtmlForm* form;
+   friend class DilloHtmlFormImpl;
+   DilloHtmlFormImpl* form;
 
 public:
-   DilloHtmlReceiver (DilloHtmlForm* form2) { form = form2; }
+   DilloHtmlReceiver (DilloHtmlFormImpl* form2) { form = form2; }
    ~DilloHtmlReceiver () { }
 
 private:
@@ -157,8 +138,8 @@ private:
 
 class DilloHtmlInput {
 
-   // DilloHtmlForm::addInput() calls connectTo()
-   friend class DilloHtmlForm;
+   // DilloHtmlFormImpl::addInput() calls connectTo()
+   friend class DilloHtmlFormImpl;
 
 public:  //BUG: for now everything is public
    DilloHtmlInputType type;
@@ -174,7 +155,7 @@ public:  //BUG: for now everything is public
 
 private:
    void connectTo(DilloHtmlReceiver *form_receiver);
-   void activate(DilloHtmlForm *form, int num_entry_fields,EventButton *event);
+   void activate(DilloHtmlFormImpl *form, int num_entry_fields,EventButton *event);
    void readFile(BrowserWindow *bw);
 
 public:
@@ -250,20 +231,15 @@ public:
  * Form API
  */
 
-DilloHtmlForm *a_Html_form_new (DilloHtml *html, DilloHtmlMethod method,
+std::unique_ptr< DilloHtmlForm > a_Html_form_new (DilloHtml *html, DilloHtmlMethod method,
                                 const DilloUrl *action,
                                 DilloHtmlEnc content_type, const char *charset,
                                 bool enabled)
 {
-   return new DilloHtmlForm (html, method, action, content_type, charset,
+   return std::make_unique< DilloHtmlFormImpl > (html, method, action, content_type, charset,
                              enabled);
 }
 
-void a_Html_form_delete (DilloHtmlForm *form)
-{
-   delete form;
-}
-
 void a_Html_input_delete (DilloHtmlInput *input)
 {
    delete input;
@@ -271,17 +247,17 @@ void a_Html_input_delete (DilloHtmlInput *input)
 
 void a_Html_form_submit2(void *vform)
 {
-   ((DilloHtmlForm *)vform)->submit(NULL, NULL);
+   ((DilloHtmlFormImpl *)vform)->submit(NULL, NULL);
 }
 
 void a_Html_form_reset2(void *vform)
 {
-   ((DilloHtmlForm *)vform)->reset();
+   ((DilloHtmlFormImpl *)vform)->reset();
 }
 
 void a_Html_form_display_hiddens2(void *vform, bool display)
 {
-   ((DilloHtmlForm *)vform)->display_hiddens(display);
+   ((DilloHtmlFormImpl *)vform)->display_hiddens(display);
 }
 
 /*
@@ -318,7 +294,7 @@ static std::shared_ptr< DilloHtmlInput > Html_get_radio_input(DilloHtml *html, c
       std::vector< std::shared_ptr< DilloHtmlInput > > *inputs;
 
       if (html->InFlags & IN_FORM)
-         inputs = &html->getCurrentForm()->inputs;
+         inputs = html->getCurrentForm()->get_inputs();
       else
          inputs = &html->inputs_outside_form;
 
@@ -340,7 +316,7 @@ static std::shared_ptr< DilloHtmlInput > Html_get_current_input(DilloHtml &html)
    std::vector< std::shared_ptr< DilloHtmlInput > > *inputs;
 
    if (html.InFlags & IN_FORM)
-      inputs = &html.getCurrentForm()->inputs;
+      inputs = html.getCurrentForm()->get_inputs();
    else
       inputs = &html.inputs_outside_form;
 
@@ -524,11 +500,11 @@ void Html_tag_open_input(DilloHtml *html, const char *tag, int tagsize)
       bool valid = true;
       if (html->InFlags & IN_FORM) {
          DilloHtmlForm *form = html->getCurrentForm();
-         if (form->method != DILLO_HTML_METHOD_POST) {
+         if (form->get_method() != DILLO_HTML_METHOD_POST) {
             valid = false;
             BUG_MSG("<form> with file input MUST use HTTP POST method.");
             MSG("File input ignored in form not using HTTP POST method\n");
-         } else if (form->content_type != DILLO_HTML_ENC_MULTIPART) {
+         } else if (form->get_content_type() != DILLO_HTML_ENC_MULTIPART) {
             valid = false;
             BUG_MSG("<form> with file input MUST use multipart/form-data"
                     " encoding.");
@@ -988,7 +964,7 @@ void Html_tag_close_button(DilloHtml *html)
 /*
  * Constructor
  */
-DilloHtmlForm::DilloHtmlForm (DilloHtml *html2,
+DilloHtmlFormImpl::DilloHtmlFormImpl (DilloHtml *html2,
                               DilloHtmlMethod method2,
                               const DilloUrl *action2,
                               DilloHtmlEnc content_type2,
@@ -1008,16 +984,16 @@ DilloHtmlForm::DilloHtmlForm (DilloHtml *html2,
 /*
  * Destructor
  */
-DilloHtmlForm::~DilloHtmlForm ()
+DilloHtmlFormImpl::~DilloHtmlFormImpl ()
 {
    delete action;
    dFree(submit_charset);
    inputs.clear();
 }
 
-void DilloHtmlForm::eventHandler(Resource *resource, EventButton *event)
+void DilloHtmlFormImpl::eventHandler(Resource *resource, EventButton *event)
 {
-   _MSG("DilloHtmlForm::eventHandler\n");
+   _MSG("DilloHtmlFormImpl::eventHandler\n");
    if (event && (event->button == 3)) {
       a_UIcmd_form_popup(html->bw, html->page_url, this, showing_hiddens);
    } else {
@@ -1025,7 +1001,7 @@ void DilloHtmlForm::eventHandler(Resource *resource, EventButton *event)
       if (input) {
          input->activate (this, num_entry_fields, event);
       } else {
-        MSG("DilloHtmlForm::eventHandler: ERROR, input not found!\n");
+        MSG("DilloHtmlFormImpl::eventHandler: ERROR, input not found!\n");
       }
    }
 }
@@ -1034,7 +1010,7 @@ void DilloHtmlForm::eventHandler(Resource *resource, EventButton *event)
  * Submit.
  * (Called by eventHandler())
  */
-void DilloHtmlForm::submit(DilloHtmlInput *active_input, EventButton *event)
+void DilloHtmlFormImpl::submit(DilloHtmlInput *active_input, EventButton *event)
 {
    if (!dStrAsciiCasecmp(URL_SCHEME(html->page_url), "https") &&
        dStrAsciiCasecmp(URL_SCHEME(action), "https")) {
@@ -1066,7 +1042,7 @@ void DilloHtmlForm::submit(DilloHtmlInput *active_input, EventButton *event)
  * Build a new query URL.
  * (Called by submit())
  */
-std::unique_ptr< DilloUrl > DilloHtmlForm::buildQueryUrl(DilloHtmlInput *active_input)
+std::unique_ptr< DilloUrl > DilloHtmlFormImpl::buildQueryUrl(DilloHtmlInput *active_input)
 {
    std::unique_ptr< DilloUrl > new_url;
 
@@ -1075,7 +1051,7 @@ std::unique_ptr< DilloUrl > DilloHtmlForm::buildQueryUrl(DilloHtmlInput *active_
       std::string DataStr;
       DilloHtmlInput *active_submit = NULL;
 
-      _MSG("DilloHtmlForm::buildQueryUrl: action=%s\n",URL_STR_(action));
+      _MSG("DilloHtmlFormImpl::buildQueryUrl: action=%s\n",URL_STR_(action));
 
       if (active_input) {
          if ((active_input->type == DILLO_HTML_INPUT_SUBMIT) ||
@@ -1114,7 +1090,7 @@ std::unique_ptr< DilloUrl > DilloHtmlForm::buildQueryUrl(DilloHtmlInput *active_
          dFree(action_str);
       }
    } else {
-      MSG("DilloHtmlForm::buildQueryUrl: Method unknown\n");
+      MSG("DilloHtmlFormImpl::buildQueryUrl: Method unknown\n");
    }
 
    return new_url;
@@ -1123,7 +1099,7 @@ std::unique_ptr< DilloUrl > DilloHtmlForm::buildQueryUrl(DilloHtmlInput *active_
 /**
  * Construct the data for a query URL
  */
-std::optional< std::string > DilloHtmlForm::buildQueryData(DilloHtmlInput *active_submit)
+std::optional< std::string > DilloHtmlFormImpl::buildQueryData(DilloHtmlInput *active_submit)
 {
    std::string DataStr;
    char *boundary = nullptr;
@@ -1256,7 +1232,7 @@ static void generate_boundary(Dstr *boundary)
  * Generate a boundary string for use in separating the parts of a
  * multipart/form-data submission.
  */
-char *DilloHtmlForm::makeMultipartBoundary(iconv_t char_encoder,
+char *DilloHtmlFormImpl::makeMultipartBoundary(iconv_t char_encoder,
                                            DilloHtmlInput *active_submit)
 {
    std::vector< std::string > values;
@@ -1307,7 +1283,7 @@ char *DilloHtmlForm::makeMultipartBoundary(iconv_t char_encoder,
  * Return value: same input Dstr if no encoding is needed.
  *               new Dstr when encoding (input Dstr is freed).
  */
-std::string DilloHtmlForm::encodeText(iconv_t char_encoder, std::string &&input)
+std::string DilloHtmlFormImpl::encodeText(iconv_t char_encoder, std::string &&input)
 {
    int rc = 0;
    Dstr *output;
@@ -1375,7 +1351,7 @@ std::string DilloHtmlForm::encodeText(iconv_t char_encoder, std::string &&input)
 /**
  * Urlencode 'str' and append it to 'dstr'
  */
-void DilloHtmlForm::strUrlencodeAppend(std::string &dstr, std::string_view str_)
+void DilloHtmlFormImpl::strUrlencodeAppend(std::string &dstr, std::string_view str_)
 {
    const std::string str{ str_ };
    auto encoded= Alepha::AutoRAII
@@ -1389,7 +1365,7 @@ void DilloHtmlForm::strUrlencodeAppend(std::string &dstr, std::string_view str_)
 /**
  * Append a name-value pair to url data using url encoding.
  */
-void DilloHtmlForm::inputUrlencodeAppend(std::string &data, const std::string_view name,
+void DilloHtmlFormImpl::inputUrlencodeAppend(std::string &data, const std::string_view name,
                                          const std::string_view value)
 {
    if (not name.empty()) {
@@ -1404,7 +1380,7 @@ void DilloHtmlForm::inputUrlencodeAppend(std::string &data, const std::string_vi
  * Append files to URL data using multipart encoding.
  * Currently only accepts one file.
  */
-void DilloHtmlForm::filesInputMultipartAppend(std::string &data,
+void DilloHtmlFormImpl::filesInputMultipartAppend(std::string &data,
                                               std::string_view boundary,
                                               std::string_view name,
                                               const std::string &file,
@@ -1453,7 +1429,7 @@ void DilloHtmlForm::filesInputMultipartAppend(std::string &data,
 /**
  * Append a name-value pair to url data using multipart encoding.
  */
-void DilloHtmlForm::inputMultipartAppend(std::string &data,
+void DilloHtmlFormImpl::inputMultipartAppend(std::string &data,
                                          std::string_view boundary,
                                          std::string_view name,
                                          std::string_view value)
@@ -1476,7 +1452,7 @@ void DilloHtmlForm::inputMultipartAppend(std::string &data,
 /**
  * Append an image button click position to url data using url encoding.
  */
-void DilloHtmlForm::imageInputUrlencodeAppend(std::string &data, const std::string_view name, const std::string_view x,
+void DilloHtmlFormImpl::imageInputUrlencodeAppend(std::string &data, const std::string_view name, const std::string_view x,
                                               const std::string_view y)
 {
    if (not name.empty()) {
@@ -1495,7 +1471,7 @@ void DilloHtmlForm::imageInputUrlencodeAppend(std::string &data, const std::stri
 /**
  * Append an image button click position to url data using multipart encoding.
  */
-void DilloHtmlForm::imageInputMultipartAppend(std::string &data, const std::string_view boundary,
+void DilloHtmlFormImpl::imageInputMultipartAppend(std::string &data, const std::string_view boundary,
       const std::string_view name_, const std::string_view x_, const std::string_view y_)
 {
    std::string name{ name_ };
@@ -1517,7 +1493,7 @@ void DilloHtmlForm::imageInputMultipartAppend(std::string &data, const std::stri
  * Reset all inputs containing reset to their initial values.  In
  * general, reset is the reset button for the form.
  */
-void DilloHtmlForm::reset ()
+void DilloHtmlFormImpl::reset ()
 {
    int size = inputs.size();
    for (int i = 0; i < size; i++)
@@ -1527,7 +1503,7 @@ void DilloHtmlForm::reset ()
 /**
  * Show/hide "hidden" form controls
  */
-void DilloHtmlForm::display_hiddens(bool display)
+void DilloHtmlFormImpl::display_hiddens(bool display)
 {
    int size = inputs.size();
    for (int i = 0; i < size; i++) {
@@ -1539,7 +1515,7 @@ void DilloHtmlForm::display_hiddens(bool display)
   showing_hiddens = display;
 }
 
-void DilloHtmlForm::setEnabled(bool enabled)
+void DilloHtmlFormImpl::setEnabled(bool enabled)
 {
    for (int i = 0; i < inputs.size(); i++)
       inputs.at(i)->setEnabled(enabled);
@@ -1548,7 +1524,7 @@ void DilloHtmlForm::setEnabled(bool enabled)
 /**
  * Add a new input.
  */
-void DilloHtmlForm::addInput(std::unique_ptr< DilloHtmlInput > input, DilloHtmlInputType type)
+void DilloHtmlFormImpl::addInput(std::unique_ptr< DilloHtmlInput > input, DilloHtmlInputType type)
 {
    input->connectTo (form_receiver.get());
    input->setEnabled (enabled);
@@ -1564,7 +1540,7 @@ void DilloHtmlForm::addInput(std::unique_ptr< DilloHtmlInput > input, DilloHtmlI
 /**
  * Return the input with a given resource.
  */
-std::shared_ptr< DilloHtmlInput > DilloHtmlForm::getInput (Resource *resource)
+std::shared_ptr< DilloHtmlInput > DilloHtmlFormImpl::getInput (Resource *resource)
 {
    for (int idx = 0; idx < inputs.size(); idx++) {
       auto input = inputs.at(idx);
@@ -1578,7 +1554,7 @@ std::shared_ptr< DilloHtmlInput > DilloHtmlForm::getInput (Resource *resource)
 /**
  * Return a Radio input for the given name.
  */
-std::shared_ptr< DilloHtmlInput > DilloHtmlForm::getRadioInput (const char *name)
+std::shared_ptr< DilloHtmlInput > DilloHtmlFormImpl::getRadioInput (const char *name)
 {
    for (int idx = 0; idx < inputs.size(); idx++) {
       auto input = inputs.at(idx);
@@ -1703,7 +1679,7 @@ void DilloHtmlInput::connectTo(DilloHtmlReceiver *form_receiver)
 /**
  * Activate a form
  */
-void DilloHtmlInput::activate(DilloHtmlForm *form, int num_entry_fields,
+void DilloHtmlInput::activate(DilloHtmlFormImpl *form, int num_entry_fields,
                               EventButton *event)
 {
    switch (type) {
diff --git a/src/form.hh b/src/form.hh
index 13ca79f..e13102c 100644
--- a/src/form.hh
+++ b/src/form.hh
@@ -1,6 +1,9 @@
 #ifndef __FORM_HH__
 #define __FORM_HH__
 
+#include <memory>
+#include <vector>
+
 #include "url.hh"
 
 /*
@@ -18,25 +21,56 @@ typedef enum {
    DILLO_HTML_ENC_MULTIPART
 } DilloHtmlEnc;
 
+enum DilloHtmlInputType {
+   DILLO_HTML_INPUT_UNKNOWN,
+   DILLO_HTML_INPUT_TEXT,
+   DILLO_HTML_INPUT_PASSWORD,
+   DILLO_HTML_INPUT_CHECKBOX,
+   DILLO_HTML_INPUT_RADIO,
+   DILLO_HTML_INPUT_IMAGE,
+   DILLO_HTML_INPUT_FILE,
+   DILLO_HTML_INPUT_BUTTON,
+   DILLO_HTML_INPUT_HIDDEN,
+   DILLO_HTML_INPUT_SUBMIT,
+   DILLO_HTML_INPUT_RESET,
+   DILLO_HTML_INPUT_BUTTON_SUBMIT,
+   DILLO_HTML_INPUT_BUTTON_RESET,
+   DILLO_HTML_INPUT_SELECT,
+   DILLO_HTML_INPUT_SEL_LIST,
+   DILLO_HTML_INPUT_TEXTAREA,
+   DILLO_HTML_INPUT_INDEX
+};
+
 /*
  * Classes
  */
-
-class DilloHtmlForm;
 class DilloHtmlInput;
 class DilloHtml;
 
+class DilloHtmlForm
+{
+	public:
+		virtual ~DilloHtmlForm()= default;
+
+	    virtual void addInput(std::unique_ptr< DilloHtmlInput > input, DilloHtmlInputType type)= 0;
+
+		virtual std::vector< std::shared_ptr< DilloHtmlInput > > *get_inputs()= 0;
+
+		virtual DilloHtmlMethod get_method() const= 0;
+		virtual DilloHtmlEnc get_content_type() const= 0;
+};
+
+
 /*
  * Form API
  */
 
-DilloHtmlForm *a_Html_form_new(DilloHtml *html,
+std::unique_ptr< DilloHtmlForm > a_Html_form_new(DilloHtml *html,
                                DilloHtmlMethod method,
                                const DilloUrl *action,
                                DilloHtmlEnc enc,
                                const char *charset, bool enabled);
 
-void a_Html_form_delete(DilloHtmlForm* form);
 void a_Html_input_delete(DilloHtmlInput* input);
 void a_Html_form_submit2(void *v_form);
 void a_Html_form_reset2(void *v_form);
diff --git a/src/html.cc b/src/html.cc
index 8554e6c..9a7f0a4 100644
--- a/src/html.cc
+++ b/src/html.cc
@@ -252,7 +252,7 @@ void a_Html_load_images(void *v_html, DilloUrl *pattern)
 static bool Html_contains_form(DilloHtml *html, void *v_form)
 {
    for (std::size_t i = 0; i < html->forms.size(); i++) {
-      if (html->forms.at(i) == v_form) {
+      if (html->forms.at(i).get() == v_form) {
          return true;
       }
    }
@@ -552,10 +552,6 @@ DilloHtml::~DilloHtml()
    delete page_url;
    delete base_url;
 
-   for (std::size_t i = 0; i < forms.size(); i++)
-      a_Html_form_delete (forms.at(i));
-   forms.clear();
-
    for (int i = 0; i < images->size(); i++) {
       DilloHtmlImage *img = images->get(i);
       delete img->url;
@@ -661,11 +657,11 @@ int DilloHtml::formNew(DilloHtmlMethod method, const DilloUrl *action,
 {
    // avoid data loss on repush after CSS stylesheets have been loaded
    bool enabled = bw->NumPendingStyleSheets == 0;
-   DilloHtmlForm *form = a_Html_form_new (this, method, action,
+   auto form = a_Html_form_new (this, method, action,
                                           enc, charset, enabled);
    int nf = forms.size ();
    (void) nf;
-   forms.emplace_back (form);
+   forms.push_back (std::move( form ));
    _MSG("Html formNew: action=%s nform=%d\n", action, nf);
    return forms.size();
 }
@@ -675,7 +671,7 @@ int DilloHtml::formNew(DilloHtmlMethod method, const DilloUrl *action,
  */
 DilloHtmlForm *DilloHtml::getCurrentForm ()
 {
-   return forms.back();
+   return forms.back().get();
 }
 
 bool_t DilloHtml::unloadedImages()
diff --git a/src/html_common.hh b/src/html_common.hh
index 59e9f7e..d375201 100644
--- a/src/html_common.hh
+++ b/src/html_common.hh
@@ -219,7 +219,7 @@ public:  //BUG: for now everything is public
    /* -------------------------------------------------------------------*/
    /* Variables required after parsing (for page functionality)          */
    /* -------------------------------------------------------------------*/
-   std::vector< DilloHtmlForm * > forms;
+   std::vector< std::unique_ptr< DilloHtmlForm > > forms;
    std::vector< std::shared_ptr< DilloHtmlInput > >  inputs_outside_form;
    std::vector< std::unique_ptr< DilloUrl > > links;
    lout::misc::SimpleVector<DilloHtmlImage*> *images;