diff --git a/generators/_init-hybrid/index.js b/generators/_init-hybrid/index.js
index 01972fd8..12281e2d 100644
--- a/generators/_init-hybrid/index.js
+++ b/generators/_init-hybrid/index.js
@@ -38,7 +38,7 @@ class Generator extends Base {
 
   default() {
     const types = this.config.get('type').split('-');
-    this.composeWith(['phovea:_node', 'phovea:init-' + types[1], 'phovea:init-' + types[0]], {options: this.options})
+    this.composeWith(['phovea:_node', 'phovea:init-' + types[1], 'phovea:init-' + types[0]], {options: this.options, skipPrompting: this.options.skipPrompting, useDefaults: true})
   }
 
   end() {
diff --git a/generators/change-type/index.js b/generators/change-type/index.js
new file mode 100644
index 00000000..b30a8406
--- /dev/null
+++ b/generators/change-type/index.js
@@ -0,0 +1,32 @@
+'use strict';
+const Base = require('yeoman-generator');
+const pluginTypes = ['lib', 'slib', 'lib-slib', 'lib-service', 'service', 'app', 'app-slib',]
+
+class ChangeTypeGenerator extends Base {
+
+  constructor(args, options) {
+    super(args, options);
+  }
+
+  prompting() {
+    const type = this.config.get('type');
+    return this.prompt([{
+      type: 'checkbox',
+      name: 'type',
+      message: 'New Type',
+      default: ['slib'],
+      choices: pluginTypes
+    }]).then(({type}) => {
+      this.old = this.config.get('type')
+      this.log(type)
+      this.config.set('type', type[0]);
+
+    })
+  }
+  default() {
+    const type = this.config.get('type')
+    this.composeWith(`phovea:to-${type}-type`, {currentType: this.old, newType: this.config.get('type')})
+  }
+}
+
+module.exports = ChangeTypeGenerator;
diff --git a/generators/to-lib-type/index.js b/generators/to-lib-type/index.js
new file mode 100644
index 00000000..13685c13
--- /dev/null
+++ b/generators/to-lib-type/index.js
@@ -0,0 +1,49 @@
+'use strict';
+const Base = require('yeoman-generator');
+
+const diff = [
+  'buildPython.js',
+  'deploy/docker-compose.partial.yml',
+  'docker_packages.txt',
+  'docs/.gitignore',
+  'docs/_static/touch.txt',
+  'docs/_templates/touch.txt',
+  'docs/conf.py',
+  'docs/index.rst',
+  'requirements.txt',
+  'requirements_dev.txt',
+  'setup.cfg',
+  'setup.py',
+  'test/__init__.py',
+  'test/config.json',
+  'tox.ini',
+]
+const prefix = '../../';
+
+class DowngradeLib extends Base {
+
+  constructor(args, options) {
+    super(args, options);
+  }
+
+  initializing() {
+    this.gitIgnorePath = this.templatePath(`${prefix}_init-web/templates/_gitignore`)
+    this.pathToConfigYml = this.templatePath(`${prefix}_init-web/templates/plain/.circleci/config.yml`)
+    this.pathToPackageJSON = this.templatePath(`${prefix}_init-web/templates/package.tmpl.json`)
+  }
+  _reversePackageJSON() {
+    const pkg = this.fs.readJSON(this.destinationPath('package.json'));
+    const {scripts, files} = this.fs.readJSON(this.pathToPackageJSON);
+    pkg.scripts = scripts;
+    pkg.files = files;
+    this.fs.writeJSON(this.destinationPath('package.json'), pkg);
+  }
+  writing() {
+    diff.forEach((file) => this.fs.delete(this.destinationPath(file)))
+    this.fs.copyTpl(this.gitIgnorePath, this.destinationPath('.gitignore'));
+    this.fs.copyTpl(this.pathToConfigYml, this.destinationPath('.circleci/config.yml'));
+    this._reversePackageJSON();
+  }
+}
+
+module.exports = DowngradeLib;
diff --git a/generators/to-slib-type/index.js b/generators/to-slib-type/index.js
new file mode 100644
index 00000000..c92c7d45
--- /dev/null
+++ b/generators/to-slib-type/index.js
@@ -0,0 +1,59 @@
+'use strict';
+const Base = require('yeoman-generator');
+const {merge, omit, extend, template} = require('lodash');
+
+const diff = [
+  'buildInfo.js',
+  'index.js',
+  'jest.config.js',
+  'phovea_registry.js',
+  'src/index.ts',
+  'src/phovea.ts',
+  'tests.webpack.js',
+  'tests/index.test.ts',
+  'tsconfig.json',
+  'tsconfig_dev.json',
+  'tsd.d.ts',
+  'tslint.json',
+  'typedoc.json',
+  'webpack.config.js'
+]
+const prefix = '../../';
+
+class DowngradeSlib extends Base {
+
+  constructor(args, options) {
+    super(args, options);
+  }
+
+  initializing() {
+    this.gitIgnorePath = this.templatePath(`${prefix}_init-python/templates/_gitignore`)
+    this.pathToConfigYml = this.templatePath(`${prefix}_init-python/templates/plain/.circleci/config.yml`)
+    this.pathToPackageJSON = this.templatePath(`${prefix}_init-python/templates/package.tmpl.json`)
+  }
+
+  _reversePackageJSON() {
+    const config = this.config.getAll();
+    let pkg = this.fs.readJSON(this.destinationPath('package.json'));
+    const pkgPatch = JSON.parse(template(this.fs.read(this.pathToPackageJSON))(config));
+    pkg = omit(pkg, ['engines', 'dependencies', 'devDependencies']);
+    pkg = Object.assign(pkg, pkgPatch);
+    this.fs.writeJSON(this.destinationPath('package.json'), pkg);
+  }
+  _downgrade() {
+    diff.forEach((file) => this.fs.delete(this.destinationPath(file)))
+    this.fs.copyTpl(this.gitIgnorePath, this.destinationPath('.gitignore'));
+    this.fs.copyTpl(this.pathToConfigYml, this.destinationPath('.circleci/config.yml'));
+    this._reversePackageJSON();
+  }
+
+  _upgrade(){
+
+  }
+
+  writing() {
+    this._downgrade();
+  }
+}
+
+module.exports = DowngradeSlib;
diff --git a/upgrade/app b/upgrade/app
new file mode 100644
index 00000000..76794d7b
--- /dev/null
+++ b/upgrade/app
@@ -0,0 +1,32 @@
+.circleci/config.yml
+.editorconfig
+.gitattributes
+.gitignore
+.yo-rc.json
+ISSUE_TEMPLATE.md
+LICENSE
+README.md
+buildInfo.js
+deploy/Dockerfile
+deploy/nginx-default.conf
+jest.config.js
+package.json
+phovea_registry.js
+src/404.html
+src/app.ts
+src/index.html
+src/index.ts
+src/language.ts
+src/phovea.ts
+src/robots.txt
+src/style.scss
+src/styles/_base.scss
+tests.webpack.js
+tests/app.test.ts
+tsconfig.json
+tsconfig_dev.json
+tsd.d.ts
+tslint.json
+typedoc.json
+webpack.config.js
+
diff --git a/upgrade/app-slib b/upgrade/app-slib
new file mode 100644
index 00000000..14ac0884
--- /dev/null
+++ b/upgrade/app-slib
@@ -0,0 +1,46 @@
+.circleci/config.yml
+.editorconfig
+.gitattributes
+.gitignore
+.yo-rc.json
+ISSUE_TEMPLATE.md
+LICENSE
+README.md
+buildInfo.js
+buildPython.js
+deploy/Dockerfile
+deploy/docker-compose.partial.yml
+deploy/nginx-default.conf
+docker_packages.txt
+docs/.gitignore
+docs/_static/touch.txt
+docs/_templates/touch.txt
+docs/conf.py
+docs/index.rst
+jest.config.js
+package.json
+phovea_registry.js
+requirements.txt
+requirements_dev.txt
+setup.cfg
+setup.py
+src/404.html
+src/app.ts
+src/index.html
+src/index.ts
+src/language.ts
+src/phovea.ts
+src/robots.txt
+src/style.scss
+src/styles/_base.scss
+test/__init__.py
+test/config.json
+tests.webpack.js
+tests/app.test.ts
+tox.ini
+tsconfig.json
+tsconfig_dev.json
+tsd.d.ts
+tslint.json
+typedoc.json
+webpack.config.js
diff --git a/upgrade/lib b/upgrade/lib
new file mode 100644
index 00000000..3039c0b4
--- /dev/null
+++ b/upgrade/lib
@@ -0,0 +1,23 @@
+.circleci/config.yml
+.editorconfig
+.gitattributes
+.gitignore
+.yo-rc.json
+ISSUE_TEMPLATE.md
+LICENSE
+README.md
+buildInfo.js
+index.js
+jest.config.js
+package.json
+phovea_registry.js
+src/index.ts
+src/phovea.ts
+tests.webpack.js
+tests/index.test.ts
+tsconfig.json
+tsconfig_dev.json
+tsd.d.ts
+tslint.json
+typedoc.json
+webpack.config.js
diff --git a/upgrade/lib-service b/upgrade/lib-service
new file mode 100644
index 00000000..e03ea637
--- /dev/null
+++ b/upgrade/lib-service
@@ -0,0 +1,43 @@
+.circleci/config.yml
+.editorconfig
+.gitattributes
+.gitignore
+.yo-rc.json
+ISSUE_TEMPLATE.md
+LICENSE
+README.md
+buildInfo.js
+buildPython.js
+deploy/Dockerfile
+deploy/Dockerfile_dev
+deploy/docker-compose-debug.partial.yml
+deploy/docker-compose.partial.yml
+docker_packages.txt
+docs/.gitignore
+docs/_static/touch.txt
+docs/_templates/touch.txt
+docs/conf.py
+docs/index.rst
+index.js
+jest.config.js
+package.json
+phovea_registry.js
+requirements.txt
+requirements_dev.txt
+setup.cfg
+setup.py
+src/index.ts
+src/phovea.ts
+test/__init__.py
+test/config.json
+test/server.py
+tests.webpack.js
+tests/index.test.ts
+tests/test_server.py
+tox.ini
+tsconfig.json
+tsconfig_dev.json
+tsd.d.ts
+tslint.json
+typedoc.json
+webpack.config.js
diff --git a/upgrade/lib-slib b/upgrade/lib-slib
new file mode 100644
index 00000000..b0d54556
--- /dev/null
+++ b/upgrade/lib-slib
@@ -0,0 +1,38 @@
+.circleci/config.yml
+.editorconfig
+.gitattributes
+.gitignore
+.yo-rc.json
+ISSUE_TEMPLATE.md
+LICENSE
+README.md
+buildInfo.js
+buildPython.js
+deploy/docker-compose.partial.yml
+docker_packages.txt
+docs/.gitignore
+docs/_static/touch.txt
+docs/_templates/touch.txt
+docs/conf.py
+docs/index.rst
+index.js
+jest.config.js
+package.json
+phovea_registry.js
+requirements.txt
+requirements_dev.txt
+setup.cfg
+setup.py
+src/index.ts
+src/phovea.ts
+test/__init__.py
+test/config.json
+tests.webpack.js
+tests/index.test.ts
+tox.ini
+tsconfig.json
+tsconfig_dev.json
+tsd.d.ts
+tslint.json
+typedoc.json
+webpack.config.js
diff --git a/upgrade/service b/upgrade/service
new file mode 100644
index 00000000..6ad5b9cd
--- /dev/null
+++ b/upgrade/service
@@ -0,0 +1,29 @@
+.circleci/config.yml
+.editorconfig
+.gitattributes
+.gitignore
+.yo-rc.json
+ISSUE_TEMPLATE.md
+LICENSE
+README.md
+buildPython.js
+deploy/Dockerfile
+deploy/Dockerfile_dev
+deploy/docker-compose-debug.partial.yml
+deploy/docker-compose.partial.yml
+docker_packages.txt
+docs/.gitignore
+docs/_static/touch.txt
+docs/_templates/touch.txt
+docs/conf.py
+docs/index.rst
+package.json
+requirements.txt
+requirements_dev.txt
+setup.cfg
+setup.py
+test/__init__.py
+test/config.json
+test/server.py
+tests/test_server.py
+tox.ini
diff --git a/upgrade/slib b/upgrade/slib
new file mode 100644
index 00000000..2704115e
--- /dev/null
+++ b/upgrade/slib
@@ -0,0 +1,24 @@
+.circleci/config.yml
+.editorconfig
+.gitattributes
+.gitignore
+.yo-rc.json
+ISSUE_TEMPLATE.md
+LICENSE
+README.md
+buildPython.js
+deploy/docker-compose.partial.yml
+docker_packages.txt
+docs/.gitignore
+docs/_static/touch.txt
+docs/_templates/touch.txt
+docs/conf.py
+docs/index.rst
+package.json
+requirements.txt
+requirements_dev.txt
+setup.cfg
+setup.py
+test/__init__.py
+test/config.json
+tox.ini
diff --git a/utils/index.js b/utils/index.js
index c1d25005..bc8d2b23 100644
--- a/utils/index.js
+++ b/utils/index.js
@@ -135,8 +135,9 @@ class BaseInitPluginGenerator extends Generator {
     this.composeWith('phovea:_init-' + this.basetype, {
       options: Object.assign({
         readme: this.readmeAddon() + (this.options.readme ? `\n\n${this.options.readme}` : '')
-      }, this.options)
-    });
+      }, this.options),
+      useDefaults: this.options.useDefaults
+    })
   }
 
   writing() {