diff --git a/app/corpora/routes.py b/app/corpora/routes.py
index 5d1b1a413733035c24dfe18913f996f339fe5b05..8a3e5e66f950d079a6177cff80531d6a01aa02ff 100644
--- a/app/corpora/routes.py
+++ b/app/corpora/routes.py
@@ -16,6 +16,7 @@ from threading import Thread
 import os
 from .decorators import corpus_follower_permission_required, corpus_owner_or_admin_required
 from app import db, hashids
+from app.decorators import content_negotiation
 from app.models import (
     Corpus,
     CorpusFile,
@@ -32,93 +33,6 @@ from .forms import (
 )
 
 
-@bp.route('/<hashid:corpus_id>/is_public', methods=['POST'])
-@login_required
-@corpus_owner_or_admin_required
-def update_corpus_is_public(corpus_id):
-    is_public = request.json
-    if not isinstance(is_public, bool):
-        response = jsonify('The request body must be a boolean')
-        response.status_code = 400
-        abort(response)
-    corpus = Corpus.query.get_or_404(corpus_id)
-    corpus.is_public = is_public
-    db.session.commit()
-    return '', 204
-
-
-@bp.route('/<hashid:corpus_id>/followers/add', methods=['POST'])
-@login_required
-@corpus_owner_or_admin_required
-def add_corpus_followers(corpus_id):
-    usernames = request.json
-    if not (isinstance(usernames, list) or all(isinstance(u, str) for u in usernames)):
-        response = jsonify('The request body must be a list of strings')
-        response.status_code = 400
-        abort(response)
-    corpus = Corpus.query.get_or_404(corpus_id)
-    for username in usernames:
-        user = User.query.filter_by(username=username, is_public=True).first_or_404()
-        user.follow_corpus(corpus)
-    db.session.commit()
-    return '', 204
-
-
-@bp.route('/<hashid:corpus_id>/follow/<token>')
-@login_required
-def follow_corpus(corpus_id, token):
-    corpus = Corpus.query.get_or_404(corpus_id)
-    if current_user.follow_corpus_by_token(token):
-        db.session.commit()
-        flash(f'You are following {corpus.title} now', category='corpus')
-        return redirect(url_for('corpora.corpus', corpus_id=corpus_id))
-    abort(403)    
-
-
-@bp.route('/<hashid:corpus_id>/followers/<hashid:follower_id>/unfollow', methods=['POST'])
-@login_required
-def unfollow_corpus(corpus_id, follower_id):
-    corpus = Corpus.query.get_or_404(corpus_id)
-    follower = User.query.get_or_404(follower_id)
-    if not (corpus.user == current_user or follower == current_user or current_user.is_administrator()):
-        abort(403)
-    if not follower.is_following_corpus(corpus):
-        abort(409)  # 'User is not following the corpus'
-    follower.unfollow_corpus(corpus)
-    db.session.commit()
-    flash(f'{follower.username} is not following {corpus.title} anymore', category='corpus')
-    return '', 204
-
-
-@bp.route('/<hashid:corpus_id>/followers/<hashid:follower_id>/role', methods=['POST'])
-@corpus_follower_permission_required('UPDATE_FOLLOWER')
-def add_permission(corpus_id, follower_id):
-    corpus_follower_association = CorpusFollowerAssociation.query.filter_by(corpus_id=corpus_id, follower_id=follower_id).first_or_404()
-    if not (corpus_follower_association.corpus.user == current_user or current_user.is_administrator()):
-        abort(403)
-    role_name = request.json.get('role')
-    if role_name is None:
-        abort(400)
-    corpus_follower_role = CorpusFollowerRole.query.filter_by(name=role_name).first_or_404()
-    corpus_follower_association.role = corpus_follower_role
-    db.session.commit()
-    return '', 204
-
-
-@bp.route('/public')
-@login_required
-def public_corpora():
-    corpora = [
-        c.to_json_serializeable()
-        for c in Corpus.query.filter(Corpus.is_public == True).all()
-    ]
-    return render_template(
-        'corpora/public_corpora.html.j2',
-        corpora=corpora,
-        title='Corpora'
-    )
-
-
 @bp.route('/create', methods=['GET', 'POST'])
 @login_required
 def create_corpus():
@@ -145,6 +59,24 @@ def create_corpus():
     )
 
 
+@bp.route('/public')
+@login_required
+def public_corpora():
+    corpora = [
+        c.to_json_serializeable()
+        for c in Corpus.query.filter(Corpus.is_public == True).all()
+    ]
+    return render_template(
+        'corpora/public_corpora.html.j2',
+        corpora=corpora,
+        title='Corpora'
+    )
+
+
+##############################################################################
+# Corpus                                                                     #
+##############################################################################
+#region corpus
 @bp.route('/<hashid:corpus_id>')
 @login_required
 def corpus(corpus_id):
@@ -172,6 +104,18 @@ def corpus(corpus_id):
     abort(403)
 
 
+@bp.route('/<hashid:corpus_id>/analyse')
+@login_required
+@corpus_follower_permission_required('VIEW')
+def analyse_corpus(corpus_id):
+    corpus = Corpus.query.get_or_404(corpus_id)
+    return render_template(
+        'corpora/analyse_corpus.html.j2',
+        corpus=corpus,
+        title=f'Analyse Corpus {corpus.title}'
+    )
+
+
 @bp.route('/<hashid:corpus_id>/generate-corpus-share-link', methods=['GET', 'POST'])
 @login_required
 @corpus_follower_permission_required('GENERATE_SHARE_LINK')
@@ -186,9 +130,34 @@ def generate_corpus_share_link(corpus_id):
     return link
 
 
+@bp.route('/<hashid:corpus_id>/follow/<token>')
+@login_required
+def follow_corpus(corpus_id, token):
+    corpus = Corpus.query.get_or_404(corpus_id)
+    if current_user.follow_corpus_by_token(token):
+        db.session.commit()
+        flash(f'You are following {corpus.title} now', category='corpus')
+        return redirect(url_for('corpora.corpus', corpus_id=corpus_id))
+    abort(403)
+
+
+@bp.route('/import', methods=['GET', 'POST'])
+@login_required
+def import_corpus():
+    abort(503)
+
+
+@bp.route('/<hashid:corpus_id>/export')
+@login_required
+def export_corpus(corpus_id):
+    abort(503)
+
+
+#region json-routes
 @bp.route('/<hashid:corpus_id>', methods=['DELETE'])
 @login_required
 @corpus_owner_or_admin_required
+@content_negotiation(produces='application/json')
 def delete_corpus(corpus_id):
     def _delete_corpus(app, corpus_id):
         with app.app_context():
@@ -199,27 +168,22 @@ def delete_corpus(corpus_id):
     corpus = Corpus.query.get_or_404(corpus_id)
     thread = Thread(
         target=_delete_corpus,
-        args=(current_app._get_current_object(), corpus_id)
+        args=(current_app._get_current_object(), corpus.id)
     )
     thread.start()
-    return {}, 202
-
-
-@bp.route('/<hashid:corpus_id>/analyse')
-@login_required
-@corpus_follower_permission_required('VIEW')
-def analyse_corpus(corpus_id):
-    corpus = Corpus.query.get_or_404(corpus_id)
-    return render_template(
-        'corpora/analyse_corpus.html.j2',
-        corpus=corpus,
-        title=f'Analyse Corpus {corpus.title}'
-    )
+    response_data = {
+        'message': f'Corpus "{corpus.title}" marked for deletion',
+        'category': 'corpus'
+    }
+    response = jsonify(response_data)
+    response.status_code = 200
+    return response
 
 
 @bp.route('/<hashid:corpus_id>/build', methods=['POST'])
 @login_required
 @corpus_owner_or_admin_required
+@content_negotiation(produces='application/json')
 def build_corpus(corpus_id):
     def _build_corpus(app, corpus_id):
         with app.app_context():
@@ -230,18 +194,51 @@ def build_corpus(corpus_id):
     corpus = Corpus.query.get_or_404(corpus_id)
     if not (corpus.user == current_user or current_user.is_administrator()):
         abort(403)
-    # Check if the corpus has corpus files
-    if not corpus.files.all():
-        response = {'errors': {'message': 'Corpus file(s) required'}}
-        return response, 409
+    if len(corpus.files.all()) == 0:
+        abort(409)
     thread = Thread(
         target=_build_corpus,
         args=(current_app._get_current_object(), corpus_id)
     )
     thread.start()
-    return {}, 202
+    response_data = {
+        'message': f'Corpus "{corpus.title}" marked for building',
+        'category': 'corpus'
+    }
+    response = jsonify(response_data)
+    response.status_code = 202
+    return response
 
 
+@bp.route('/<hashid:corpus_id>/is_public', methods=['PUT'])
+@login_required
+@corpus_owner_or_admin_required
+@content_negotiation(consumes='application/json', produces='application/json')
+def update_corpus_is_public(corpus_id):
+    is_public = request.json
+    if not isinstance(is_public, bool):
+        abort(400)
+    corpus = Corpus.query.get_or_404(corpus_id)
+    corpus.is_public = is_public
+    db.session.commit()
+    response_data = {
+        'message': (
+            f'Corpus "{corpus.title}" is now'
+            f' {"public" if is_public else "private"}'
+        ),
+        'category': 'corpus'
+    }
+    response = jsonify(response_data)
+    response.status_code = 200
+    return response
+#endregion json-routes
+#endregion corpus
+
+
+##############################################################################
+# Corpus/Files                                                               #
+##############################################################################
+#region files
 @bp.route('/<hashid:corpus_id>/files/create', methods=['GET', 'POST'])
 @login_required
 @corpus_follower_permission_required('ADD_CORPUS_FILE')
@@ -292,7 +289,7 @@ def create_corpus_file(corpus_id):
 
 @bp.route('/<hashid:corpus_id>/files/<hashid:corpus_file_id>', methods=['GET', 'POST'])
 @login_required
-@corpus_follower_permission_required('ADD_CORPUS_FILE', 'UPDATE_CORPUS_FILE', 'REMOVE_CORPUS_FILE')
+@corpus_follower_permission_required('UPDATE_CORPUS_FILE')
 def corpus_file(corpus_id, corpus_file_id):
     corpus_file = CorpusFile.query.filter_by(corpus_id = corpus_id, id=corpus_file_id).first_or_404()
     form = UpdateCorpusFileForm(data=corpus_file.to_json_serializeable())
@@ -313,9 +310,27 @@ def corpus_file(corpus_id, corpus_file_id):
     )
 
 
+@bp.route('/<hashid:corpus_id>/files/<hashid:corpus_file_id>/download')
+@login_required
+@corpus_follower_permission_required('VIEW')
+def download_corpus_file(corpus_id, corpus_file_id):
+    corpus_file = CorpusFile.query.filter_by(corpus_id = corpus_id, id=corpus_file_id).first_or_404()
+    if not (corpus_file.corpus.user == current_user or current_user.is_administrator()):
+        abort(403)
+    return send_from_directory(
+        os.path.dirname(corpus_file.path),
+        os.path.basename(corpus_file.path),
+        as_attachment=True,
+        attachment_filename=corpus_file.filename,
+        mimetype=corpus_file.mimetype
+    )
+
+
+#region json-routes
 @bp.route('/<hashid:corpus_id>/files/<hashid:corpus_file_id>', methods=['DELETE'])
 @login_required
 @corpus_follower_permission_required('REMOVE_CORPUS_FILE')
+@content_negotiation(produces='application/json')
 def delete_corpus_file(corpus_id, corpus_file_id):
     def _delete_corpus_file(app, corpus_file_id):
         with app.app_context():
@@ -323,40 +338,83 @@ def delete_corpus_file(corpus_id, corpus_file_id):
             corpus_file.delete()
             db.session.commit()
 
-    corpus_file = CorpusFile.query.filter_by(corpus_id = corpus_id, id=corpus_file_id).first_or_404()
-    if not (corpus_file.corpus.user == current_user or current_user.is_administrator()):
-        abort(403)
+    corpus_file = CorpusFile.query.filter_by(corpus_id=corpus_id, id=corpus_file_id).first_or_404()
     thread = Thread(
         target=_delete_corpus_file,
-        args=(current_app._get_current_object(), corpus_file_id)
+        args=(current_app._get_current_object(), corpus_file.id)
     )
     thread.start()
     return {}, 202
-
-
-@bp.route('/<hashid:corpus_id>/files/<hashid:corpus_file_id>/download')
+#endregion json-routes
+#endregion files
+
+##############################################################################
+# Corpus/Followers                                                           #
+##############################################################################
+#region followers
+#region json-routes
+@bp.route('/<hashid:corpus_id>/followers', methods=['POST'])
 @login_required
-@corpus_follower_permission_required('VIEW')
-def download_corpus_file(corpus_id, corpus_file_id):
-    corpus_file = CorpusFile.query.filter_by(corpus_id = corpus_id, id=corpus_file_id).first_or_404()
-    if not (corpus_file.corpus.user == current_user or current_user.is_administrator()):
-        abort(403)
-    return send_from_directory(
-        os.path.dirname(corpus_file.path),
-        os.path.basename(corpus_file.path),
-        as_attachment=True,
-        attachment_filename=corpus_file.filename,
-        mimetype=corpus_file.mimetype
-    )
+@corpus_owner_or_admin_required
+@content_negotiation(consumes='application/json', produces='application/json')
+def add_corpus_followers(corpus_id):
+    usernames = request.json
+    if not (isinstance(usernames, list) or all(isinstance(u, str) for u in usernames)):
+        abort(400)
+    corpus = Corpus.query.get_or_404(corpus_id)
+    for username in usernames:
+        user = User.query.filter_by(username=username, is_public=True).first_or_404()
+        user.follow_corpus(corpus)
+    db.session.commit()
+    resonse_data = {
+        'message': f'Users are now following "{corpus.title}"',
+        'category': 'corpus'
+    }
+    response = jsonify(resonse_data)
+    response.status_code = 200
+    return response
 
 
-@bp.route('/import', methods=['GET', 'POST'])
+@bp.route('/<hashid:corpus_id>/followers/<hashid:follower_id>', methods=['DELETE'])
 @login_required
-def import_corpus():
-    abort(503)
+@content_negotiation(produces='application/json')
+def unfollow_corpus(corpus_id, follower_id):
+    corpus = Corpus.query.get_or_404(corpus_id)
+    follower = User.query.get_or_404(follower_id)
+    if not (corpus.user == current_user or follower == current_user or current_user.is_administrator()):
+        abort(403)
+    if not follower.is_following_corpus(corpus):
+        abort(409)  # 'User is not following the corpus'
+    follower.unfollow_corpus(corpus)
+    db.session.commit()
+    response_data = {
+        'message': \
+            f'"{follower.username}" is not following "{corpus.title}" anymore',
+        'category': 'corpus'
+    }
+    response = jsonify(response_data)
+    response.status_code = 200
+    return response
 
 
-@bp.route('/<hashid:corpus_id>/export')
+@bp.route('/<hashid:corpus_id>/followers/<hashid:follower_id>/role', methods=['PUT'])
 @login_required
-def export_corpus(corpus_id):
-    abort(503)
+@corpus_owner_or_admin_required
+@content_negotiation(consumes='application/json', produces='application/json')
+def add_permission(corpus_id, follower_id):
+    role_name = request.json
+    if not isinstance(role_name, str):
+        abort(400)
+    cfr = CorpusFollowerRole.query.filter_by(name=role_name).first_or_404()
+    cfa = CorpusFollowerAssociation.query.filter_by(corpus_id=corpus_id, follower_id=follower_id).first_or_404()
+    cfa.role = cfr
+    db.session.commit()
+    resonse_data = {
+        'message': f'User "{cfa.follower.username}" is now {cfa.role.name}',
+        'category': 'corpus'
+    }
+    response = jsonify(resonse_data)
+    response.status_code = 200
+    return response
+#endregion json-routes
+#endregion followers
diff --git a/app/static/js/Requests/Contributions.js b/app/static/js/Requests/Contributions.js
deleted file mode 100644
index 306051359f2e7410d49be9479e19a4729d8acfe0..0000000000000000000000000000000000000000
--- a/app/static/js/Requests/Contributions.js
+++ /dev/null
@@ -1,51 +0,0 @@
-/*****************************************************************************
-* Contributions                                                              *
-* Fetch requests for /contributions routes                                   *
-*****************************************************************************/
-Requests.contributions = {};
-
-Requests.contributions.spacy_nlp_pipeline_models = {};
-
-Requests.contributions.spacy_nlp_pipeline_models.ent = {};
-
-Requests.contributions.spacy_nlp_pipeline_models.ent.delete = (spacyNlpPipelineModelId) => {
-  let input = `/contributions/spacy-nlp-pipeline-models/${spacyNlpPipelineModelId}`;
-  let init = {
-    method: 'DELETE'
-  };
-  return Requests.JSONfetch(input, init);
-};
-
-Requests.contributions.spacy_nlp_pipeline_models.ent.isPublic = {};
-
-Requests.contributions.spacy_nlp_pipeline_models.ent.isPublic.update = (spacyNlpPipelineModelId, value) => {
-  let input = `/contributions/spacy-nlp-pipeline-models/${spacyNlpPipelineModelId}/is_public`;
-  let init = {
-    method: 'PUT',
-    body: JSON.stringify(value)
-  };
-  return Requests.JSONfetch(input, init);
-};
-
-Requests.contributions.tesseract_ocr_pipeline_models = {};
-
-Requests.contributions.tesseract_ocr_pipeline_models.ent = {};
-
-Requests.contributions.tesseract_ocr_pipeline_models.ent.delete = (tesseractOcrPipelineModelId) => {
-  let input = `/contributions/tesseract-ocr-pipeline-models/${tesseractOcrPipelineModelId}`;
-  let init = {
-    method: 'DELETE'
-  };
-  return Requests.JSONfetch(input, init);
-};
-
-Requests.contributions.tesseract_ocr_pipeline_models.ent.isPublic = {};
-
-Requests.contributions.tesseract_ocr_pipeline_models.ent.isPublic.update = (tesseractOcrPipelineModelId, value) => {
-  let input = `/contributions/tesseract-ocr-pipeline-models/${tesseractOcrPipelineModelId}/is_public`;
-  let init = {
-    method: 'PUT',
-    body: JSON.stringify(value)
-  };
-  return Requests.JSONfetch(input, init);
-};
diff --git a/app/static/js/Requests/Corpora.js b/app/static/js/Requests/Corpora.js
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/app/static/js/Requests/contributions/contributions.js b/app/static/js/Requests/contributions/contributions.js
new file mode 100644
index 0000000000000000000000000000000000000000..2d9cf26a1bcdf0cf4a1c574fead0c26201bf1b43
--- /dev/null
+++ b/app/static/js/Requests/contributions/contributions.js
@@ -0,0 +1,5 @@
+/*****************************************************************************
+* Contributions                                                              *
+* Fetch requests for /contributions routes                                   *
+*****************************************************************************/
+Requests.contributions = {};
diff --git a/app/static/js/Requests/contributions/spacy_nlp_pipeline_models.js b/app/static/js/Requests/contributions/spacy_nlp_pipeline_models.js
new file mode 100644
index 0000000000000000000000000000000000000000..e1422c1e62ec3c624401cf636f24b7b64d16117a
--- /dev/null
+++ b/app/static/js/Requests/contributions/spacy_nlp_pipeline_models.js
@@ -0,0 +1,26 @@
+/*****************************************************************************
+* SpaCy NLP Pipeline Models                                                  *
+* Fetch requests for /contributions/spacy-nlp-pipeline-models routes         *
+*****************************************************************************/
+Requests.contributions.spacy_nlp_pipeline_models = {};
+
+Requests.contributions.spacy_nlp_pipeline_models.entity = {};
+
+Requests.contributions.spacy_nlp_pipeline_models.entity.delete = (spacyNlpPipelineModelId) => {
+  let input = `/contributions/spacy-nlp-pipeline-models/${spacyNlpPipelineModelId}`;
+  let init = {
+    method: 'DELETE'
+  };
+  return Requests.JSONfetch(input, init);
+};
+
+Requests.contributions.spacy_nlp_pipeline_models.entity.isPublic = {};
+
+Requests.contributions.spacy_nlp_pipeline_models.entity.isPublic.update = (spacyNlpPipelineModelId, value) => {
+  let input = `/contributions/spacy-nlp-pipeline-models/${spacyNlpPipelineModelId}/is_public`;
+  let init = {
+    method: 'PUT',
+    body: JSON.stringify(value)
+  };
+  return Requests.JSONfetch(input, init);
+};
diff --git a/app/static/js/Requests/contributions/tesseract_ocr_pipeline_models.js b/app/static/js/Requests/contributions/tesseract_ocr_pipeline_models.js
new file mode 100644
index 0000000000000000000000000000000000000000..13feb42a3d9ee50d1559299a96aed7ff967db738
--- /dev/null
+++ b/app/static/js/Requests/contributions/tesseract_ocr_pipeline_models.js
@@ -0,0 +1,26 @@
+/*****************************************************************************
+* Tesseract OCR Pipeline Models                                              *
+* Fetch requests for /contributions/tesseract-ocr-pipeline-models routes     *
+*****************************************************************************/
+Requests.contributions.tesseract_ocr_pipeline_models = {};
+
+Requests.contributions.tesseract_ocr_pipeline_models.entity = {};
+
+Requests.contributions.tesseract_ocr_pipeline_models.entity.delete = (tesseractOcrPipelineModelId) => {
+  let input = `/contributions/tesseract-ocr-pipeline-models/${tesseractOcrPipelineModelId}`;
+  let init = {
+    method: 'DELETE'
+  };
+  return Requests.JSONfetch(input, init);
+};
+
+Requests.contributions.tesseract_ocr_pipeline_models.entity.isPublic = {};
+
+Requests.contributions.tesseract_ocr_pipeline_models.entity.isPublic.update = (tesseractOcrPipelineModelId, value) => {
+  let input = `/contributions/tesseract-ocr-pipeline-models/${tesseractOcrPipelineModelId}/is_public`;
+  let init = {
+    method: 'PUT',
+    body: JSON.stringify(value)
+  };
+  return Requests.JSONfetch(input, init);
+};
diff --git a/app/static/js/Requests/corpora/corpora.js b/app/static/js/Requests/corpora/corpora.js
new file mode 100644
index 0000000000000000000000000000000000000000..051fb07f4c5a0923113f1025bc95050f55789579
--- /dev/null
+++ b/app/static/js/Requests/corpora/corpora.js
@@ -0,0 +1,78 @@
+/*****************************************************************************
+* Corpora                                                                    *
+* Fetch requests for /corpora routes                                         *
+*****************************************************************************/
+Requests.corpora = {};
+
+Requests.corpora.ent = {};
+
+Requests.corpora.ent.delete = (corpusId) => {
+  let input = `/corpora/${corpusId}`;
+  let init = {
+    method: 'DELETE'
+  };
+  return Requests.JSONfetch(input, init);
+};
+
+Requests.corpora.ent.build = (corpusId) => {
+  let input = `/corpora/${corpusId}/build`;
+  let init = {
+    method: 'POST',
+  };
+  return Requests.JSONfetch(input, init);
+};
+
+Requests.corpora.ent.isPublic = {};
+
+Requests.corpora.ent.isPublic.update = (corpusId, value) => {
+  let input = `/corpora/${corpusId}/is_public`;
+  let init = {
+    method: 'PUT',
+    body: JSON.stringify(value)
+  };
+  return Requests.JSONfetch(input, init);
+};
+
+Requests.corpora.ent.files = {};
+
+Requests.corpora.ent.files.ent = {};
+
+Requests.corpora.ent.files.ent.delete = (corpusId, corpusFileId) => {
+  let input = `/corpora/${corpusId}/files/${corpusFileId}`;
+  let init = {
+    method: 'DELETE',
+  };
+  return Requests.JSONfetch(input, init);
+};
+
+Requests.corpora.ent.followers = {};
+
+Requests.corpora.ent.followers.add = (corpusId, usernames) => {
+  let input = `/corpora/${corpusId}/followers`;
+  let init = {
+    method: 'POST',
+    body: JSON.stringify(usernames)
+  };
+  return Requests.JSONfetch(input, init);
+};
+
+Requests.corpora.ent.followers.ent = {};
+
+Requests.corpora.ent.followers.ent.delete = (corpusId, followerId) => {
+  let input = `/corpora/${corpusId}/followers/${followerId}`;
+  let init = {
+    method: 'DELETE',
+  };
+  return Requests.JSONfetch(input, init);
+};
+
+Requests.corpora.ent.followers.ent.role = {};
+
+Requests.corpora.ent.followers.ent.role.update = (corpusId, followerId, value) => {
+  let input = `/corpora/${corpusId}/followers/${followerId}/role`;
+  let init = {
+    method: 'PUT',
+    body: JSON.stringify(value)
+  };
+  return Requests.JSONfetch(input, init);
+};
diff --git a/app/static/js/ResourceLists/SpacyNLPPipelineModelList.js b/app/static/js/ResourceLists/SpacyNLPPipelineModelList.js
index 5997fb0cfcfbfda50d3dca09ddb7a230bcd6686f..46d3739d940614cec029383884bed9c79b2b05be 100644
--- a/app/static/js/ResourceLists/SpacyNLPPipelineModelList.js
+++ b/app/static/js/ResourceLists/SpacyNLPPipelineModelList.js
@@ -120,7 +120,7 @@ class SpaCyNLPPipelineModelList extends ResourceList {
     switch (listAction) {
       case 'toggle-is-public': {
         let newIsPublicValue = listActionElement.checked;
-        Requests.contributions.spacy_nlp_pipeline_models.ent.isPublic.update(itemId, newIsPublicValue)
+        Requests.contributions.spacy_nlp_pipeline_models.entity.isPublic.update(itemId, newIsPublicValue)
           .catch((response) => {
             listActionElement.checked = !newIsPublicValue;
           });
@@ -141,7 +141,37 @@ class SpaCyNLPPipelineModelList extends ResourceList {
     let listAction = listActionElement === null ? 'view' : listActionElement.dataset.listAction;
     switch (listAction) {
       case 'delete-request': {
-        Requests.contributions.spacy_nlp_pipeline_models.ent.delete(itemId);
+        let values = this.listjs.get('id', itemId)[0].values();
+        let modalElement = Utils.HTMLToElement(
+          `
+            <div class="modal">
+              <div class="modal-content">
+                <h4>Confirm SpaCy NLP Pipeline Model deletion</h4>
+                <p>Do you really want to delete the SpaCy NLP Pipeline Model <b>${values.title}</b>? All files will be permanently deleted!</p>
+              </div>
+              <div class="modal-footer">
+                <a class="btn modal-close waves-effect waves-light">Cancel</a>
+                <a class="action-button btn modal-close red waves-effect waves-light" data-action="confirm">Delete</a>
+              </div>
+            </div>
+          `
+        );
+        document.querySelector('#modals').appendChild(modalElement);
+        let modal = M.Modal.init(
+          modalElement,
+          {
+            dismissible: false,
+            onCloseEnd: () => {
+              modal.destroy();
+              modalElement.remove();
+            }
+          }
+        );
+        let confirmElement = modalElement.querySelector('.action-button[data-action="confirm"]');
+        confirmElement.addEventListener('click', (event) => {
+          Requests.contributions.spacy_nlp_pipeline_models.entity.delete(itemId);
+        });
+        modal.open();
         break;
       }
       case 'view': {
diff --git a/app/static/js/ResourceLists/TesseractOCRPipelineModelList.js b/app/static/js/ResourceLists/TesseractOCRPipelineModelList.js
index 29d48dbbd4e87522b1ac4ff5a772861a47e1ec04..9d632b29da88654565017f90338a32d2e643d5f0 100644
--- a/app/static/js/ResourceLists/TesseractOCRPipelineModelList.js
+++ b/app/static/js/ResourceLists/TesseractOCRPipelineModelList.js
@@ -129,7 +129,7 @@ class TesseractOCRPipelineModelList extends ResourceList {
     switch (listAction) {
       case 'toggle-is-public': {
         let newIsPublicValue = listActionElement.checked;
-        Requests.contributions.tesseract_ocr_pipeline_models.ent.isPublic.update(itemId, newIsPublicValue)
+        Requests.contributions.tesseract_ocr_pipeline_models.entity.isPublic.update(itemId, newIsPublicValue)
           .catch((response) => {
             listActionElement.checked = !newIsPublicValue;
           });
@@ -155,7 +155,37 @@ class TesseractOCRPipelineModelList extends ResourceList {
     let listAction = listActionElement === null ? 'view' : listActionElement.dataset.listAction;
     switch (listAction) {
       case 'delete-request': {
-        Requests.contributions.tesseract_ocr_pipeline_models.ent.delete(itemId);
+        let values = this.listjs.get('id', itemId)[0].values();
+        let modalElement = Utils.HTMLToElement(
+          `
+            <div class="modal">
+              <div class="modal-content">
+                <h4>Confirm Tesseract OCR Pipeline Model deletion</h4>
+                <p>Do you really want to delete the Tesseract OCR Pipeline Model <b>${values.title}</b>? All files will be permanently deleted!</p>
+              </div>
+              <div class="modal-footer">
+                <a class="btn modal-close waves-effect waves-light">Cancel</a>
+                <a class="action-button btn modal-close red waves-effect waves-light" data-action="confirm">Delete</a>
+              </div>
+            </div>
+          `
+        );
+        document.querySelector('#modals').appendChild(modalElement);
+        let modal = M.Modal.init(
+          modalElement,
+          {
+            dismissible: false,
+            onCloseEnd: () => {
+              modal.destroy();
+              modalElement.remove();
+            }
+          }
+        );
+        let confirmElement = modalElement.querySelector('.action-button[data-action="confirm"]');
+        confirmElement.addEventListener('click', (event) => {
+          Requests.contributions.tesseract_ocr_pipeline_models.entity.delete(itemId);
+        });
+        modal.open();
         break;
       }
       case 'view': {
diff --git a/app/templates/_scripts.html.j2 b/app/templates/_scripts.html.j2
index a97f1d9731bd614f3b92d22d39b5b11d05cc8258..6fef8d1a0274f0bdbce79af8b09396536387efca 100644
--- a/app/templates/_scripts.html.j2
+++ b/app/templates/_scripts.html.j2
@@ -58,7 +58,10 @@
   filters='rjsmin',
   output='gen/Requests.%(version)s.js',
   'js/Requests/Requests.js',
-  'js/Requests/Contributions.js'
+  'js/Requests/contributions/contributions.js',
+  'js/Requests/contributions/spacy_nlp_pipeline_models.js',
+  'js/Requests/contributions/tesseract_ocr_pipeline_models.js',
+  'js/Requests/Corpora.js'
 %}
 <script src="{{ ASSET_URL }}"></script>
 {%- endassets %}
diff --git a/app/templates/contributions/contributions.html.j2 b/app/templates/contributions/contributions.html.j2
index 99147b56f247447160b2af8dae8ca2c02f886262..efefcbbb2385915d9d3e8f4de39f3d1debe46027 100644
--- a/app/templates/contributions/contributions.html.j2
+++ b/app/templates/contributions/contributions.html.j2
@@ -20,7 +20,7 @@
 
     <div class="col s4">
       <div class="card extension-selector hoverable service-color" data-service="spacy-nlp-pipeline">
-      <a href="{{ url_for('.spacy_nlp_pipeline_models.spacy_nlp_pipeline_models') }}" style="position: absolute; width: 100%; height: 100%;"></a>
+        <a href="{{ url_for('.spacy_nlp_pipeline_models.spacy_nlp_pipeline_models') }}" style="position: absolute; width: 100%; height: 100%;"></a>
         <div class="card-content">
           <span class="card-title"><i class="nopaque-icons service-icons" data-service="spacy-nlp-pipeline"></i>SpaCy NLP Pipeline Models</span>
           <p>Here you can see and edit the models that you have created. You can also create new models.</p>
diff --git a/app/templates/corpora/corpus.html.j2 b/app/templates/corpora/corpus.html.j2
index 172dac9020103fb85b1c95de5cacede5edfc8027..3174713f7abf61d6b79c4443c414684d1e4dc70f 100644
--- a/app/templates/corpora/corpus.html.j2
+++ b/app/templates/corpora/corpus.html.j2
@@ -68,7 +68,7 @@
               <a class="btn waves-effect waves-light modal-trigger" href="#publishing-modal" style="width: 100%;"><i class="material-icons left">publish</i>Publishing</a>
             </div>
             <div class="col s12 l6" style="padding: 5px 2.5px 0 2.5px;">
-              <a class="action-button btn red waves-effect waves-light" data-action="delete-request" style="width: 100%;"><i class="material-icons left">delete</i>Delete</a>
+              <a class="btn red waves-effect waves-light modal-trigger" href="#delete-modal" style="width: 100%;"><i class="material-icons left">delete</i>Delete</a>
             </div>
           </div>
           <span class="card-title">Social</span>
@@ -131,6 +131,17 @@
   </div>
 </div>
 
+<div class="modal" id="delete-modal">
+  <div class="modal-content">
+    <h4>Confirm Corpus deletion</h4>
+    <p>Do you really want to delete the Corpus <b>{{ corpus.title }}</b>? All files will be permanently deleted!</p>
+  </div>
+  <div class="modal-footer">
+    <a class="btn modal-close waves-effect waves-light">Cancel</a>
+    <a class="btn modal-close red waves-effect waves-light" id="delete-modal-delete-button">Delete</a>
+  </div>
+</div>
+
 <div class="modal no-autoinit" id="invite-user-modal">
   <div class="modal-content">
     <h4>Invite a nopaque user by username</h4>
@@ -215,13 +226,21 @@
   let publishingModalIsPublicSwitchElement = document.querySelector('#publishing-modal-is-public-switch');
   publishingModalIsPublicSwitchElement.addEventListener('change', (event) => {
     let newIsPublic = publishingModalIsPublicSwitchElement.checked;
-    Utils.updateCorpusIsPublicRequest(corpusId, newIsPublic)
+    Requests.corpora.corpus.isPublic.update(corpusId, newIsPublic)
       .catch((response) => {
         publishingModalIsPublicSwitchElement.checked = !newIsPublic;
       });
   });
   // #endregion publishing_modal_js
 
+  // #region delete_modal_js
+  let deleteModalDeleteButtonElement = document.querySelector('#delete-modal-delete-button');
+  deleteModalDeleteButtonElement.addEventListener('click', (event) => {
+    Requests.corpora.corpus.delete(corpusId)
+      .then((response) => {window.location.href = '/dashboard';});
+  });
+  // #endregion delete_modal_js
+
   // #region invite_user_modal_js
   let inviteUserModalElement = document.querySelector('#invite-user-modal');
   let inviteUserModalSearchElement = document.querySelector('#invite-user-modal-search');