diff --git a/frontend/src/panel-source/source-metadata-panel-template.hbs b/frontend/src/panel-source/source-metadata-panel-template.hbs
index a7acc568..b93f1dc3 100644
--- a/frontend/src/panel-source/source-metadata-panel-template.hbs
+++ b/frontend/src/panel-source/source-metadata-panel-template.hbs
@@ -1,12 +1,12 @@
 <div class="panel-header">
-    <h4 class="title is-4">Source {{identifier}}, created by {{creator}} at {{dateUploaded}}</h4>
+    <h4 class="title is-4">{{#i18n 'source_meta_summary'}}Source {{identifier}}, created by {{creator}} at {{dateUploaded}}{{/i18n}}</h4>
 </div>
 <div class="panel-content">
     <!-- source-metadata will be rendered here-->
 </div>
 <div class="panel-footer buttons is-right">{{#userIsOwner}}
-    <button type=button class="button btn-delete is-danger edit-mode">Delete source</button>
-    <button type="submit" class="button btn-save edit-mode">Save changes</button>
-    <button type=reset class="button btn-cancel edit-mode">Cancel</button>
-    <button type=button class="button btn-edit">Edit</button>
+    <button type=button class="button btn-delete is-danger edit-mode">{{#i18n 'delete_source'}}Delete source{{/i18n}}</button>
+    <button type="submit" class="button btn-save edit-mode">{{#i18n 'save_changes'}}Save changes{{/i18n}}</button>
+    <button type=reset class="button btn-cancel edit-mode">{{#i18n 'cancel'}}Cancel{{/i18n}}</button>
+    <button type=button class="button btn-edit">{{#i18n 'edit'}}Edit{{/i18n}}</button>
 {{/userIsOwner}}</div>
diff --git a/frontend/src/source-metadata/source-metadata-template.hbs b/frontend/src/source-metadata/source-metadata-template.hbs
index 9de12956..84be3b37 100644
--- a/frontend/src/source-metadata/source-metadata-template.hbs
+++ b/frontend/src/source-metadata/source-metadata-template.hbs
@@ -1,36 +1,41 @@
 <div class="section source">
     <div class="field">
-        <label class="label">Title</label>
+        <label class="label">{{#i18n 'title'}}Title{{/i18n}}</label>
         <div class="control">
             <input class="input" type="text" name="title" {{#unless readonly}}placeholder="The Voyage of the Dawn Treader"{{/unless}} required {{#readonly}}readonly{{/readonly}}>
         </div>
     </div>
     <div class="field">
-        <label class="label">Author</label>
+        <label class="label">{{#i18n 'author'}}Author{{/i18n}}</label>
         <div class="control">
             <input name="author" class="input" type="text" {{#unless readonly}}placeholder="C.S. Lewis"{{/unless}} required {{#readonly}}readonly{{/readonly}}>
         </div>
     </div>
     <div class="field is-grouped">
         <div class="control">
-            <label class="label">Editor (optional)</label>
+            <label class="label">{{#i18n 'editor_opt'}}Editor (optional){{/i18n}}</label>
             <input name="editor" class="input" type="text" {{#unless readonly}}placeholder="C.S. Lewis"{{/unless}} {{#readonly}}readonly{{/readonly}}>
         </div>
         <div class="control">
-            <label class="label">Publisher (optional)</label>
+            <label class="label">{{#i18n 'publisher_opt'}}Publisher (optional){{/i18n}}</label>
             <input name="publisher" class="input" type="text" {{#unless readonly}}placeholder="Geoffrey Bles"{{/unless}} {{#readonly}}readonly{{/readonly}}>
         </div>
     </div>
     <div class="field">
-        <label class="label">Repository (optional)</label>
+        <label class="label">{{#i18n 'repository_opt'}}Repository (optional){{/i18n}}</label>
         <div class="control">
-            <input name="repository" class="input" type="text"
-                {{#unless readonly}}placeholder="Archive, location, collection, call, fasc, folio"{{/unless}} {{#readonly}}readonly{{/readonly}}>
+            <input
+                name="repository"
+                class="input"
+                type="text"
+                {{#unless readonly}}placeholder="{{#i18n 'repository_placeholder'}}Archive, location, collection, call, fasc, folio{{/i18n}}"{{/unless}}
+                {{#readonly}}readonly{{/readonly}}
+            >
         </div>
     </div>
     {{#upload}}
     <div class="field">
-        <label class="label">File</label>
+        <label class="label">{{#i18n 'file'}}File{{/i18n}}</label>
         <div class="file">
             <label class="file-label has-helptext">
                 <input class="file-input" type="file" name="source" id="source">
@@ -39,44 +44,44 @@
                         <i class="fas fa-upload"></i>
                     </span>
                     <span class="file-label filelabel">
-                        Choose a file…
+                        {{#i18n 'choose_file'}}Choose a file…{{/i18n}}
                     </span>
                 </span>
                 <span class="file-name">
-                    No file selected
+                    {{#i18n 'no_file'}}No file selected{{/i18n}}
                 </span>
             </label>
         </div>
-        <p class="help">Only txt files in UTF-8 encoding (LF for line endings) are supported.</p>
+        <p class="help">{{#i18n 'file_only_txt_utf8_lf'}}Only txt files in UTF-8 encoding (LF for line endings) are supported.{{/i18n}}</p>
     </div>
     {{/upload}}
-    
+
     <div class="field">
-        <label class="label">Language</label>
+        <label class="label">{{#i18n 'language'}}Language{{/i18n}}</label>
         <div class="control" id="languageSelect">
             {{#if readonly}}
             <input name="language" class="input" type="text" readonly>
             {{else}}
             <div class="select has-helptext">
                 <select name='language' size='1'>
-                    <option value="">Select language</option>
-                    <option value="en">English</option>
-                    <option value="de">German</option>
-                    <option value="fr">French</option>
-                    <option value="it">Italian</option>
-                    <option value="cs">Czech</option>
-                    <option value="nl">Dutch</option>
-                    <option value="other">Other</option>
+                    <option value="">{{#i18n 'select_language'}}Select language{{/i18n}}</option>
+                    <option value="en">{{#i18n 'english'}}English{{/i18n}}</option>
+                    <option value="de">{{#i18n 'german'}}German{{/i18n}}</option>
+                    <option value="fr">{{#i18n 'french'}}French{{/i18n}}</option>
+                    <option value="it">{{#i18n 'italian'}}Italian{{/i18n}}</option>
+                    <option value="cs">{{#i18n 'czech'}}Czech{{/i18n}}</option>
+                    <option value="nl">{{#i18n 'dutch'}}Dutch{{/i18n}}</option>
+                    <option value="other">{{#i18n 'other'}}Other{{/i18n}}</option>
                 </select>
             </div>
             {{/if}}
         </div>
-        <p class="help">If the source contains multiple languages,
-            please select 'Other'.</p>
+        <p class="help">{{#i18n 'source_lang_select_help'}}If the source contains multiple languages,
+            please select 'Other'.{{/i18n}}</p>
     </div>
 
     <div class="field">
-        <label class="label">Type of source</label>
+        <label class="label">{{#i18n 'source_type'}}Type of source{{/i18n}}</label>
         {{#if readonly}}
         <div class="control">
             <input name='sourceType' class="input" type="text" readonly>
@@ -85,29 +90,29 @@
         <div class="control sourceTypeSelect">
         </div>
         {{/if}}
-        <p class="help">When in doubt, choose 'Unknown'</p>
+        <p class="help">{{#i18n 'source_type_select_help'}}When in doubt, choose 'Unknown'.{{/i18n}}</p>
     </div>
     <div class="dates">
         {{!date fields with type-aware help will be rendered here}}
     </div>
     <div class="field">
         <div class="control">
-            <label class="label">Source access</label>
+            <label class="label">{{#i18n 'source_access'}}Source access{{/i18n}}</label>
             <label class="radio">
                 <input type="radio" name="public" value="public" checked>
-                Public
+                {{#i18n 'public'}}Public{{/i18n}}
             </label>
             <label class="radio">
                 <input type="radio" name="public" value="private">
-                Private
+                {{#i18n 'private'}}Private{{/i18n}}
             </label>
-            <p class="help">Provide access to everyone (public) or only to authenticated users (private).</p>
+            <p class="help">{{#i18n 'public_private_help'}}Provide access to everyone (public) or only to authenticated users (private).{{/i18n}}</p>
         </div>
     </div>
     <div class="field url">
-        <label class="label">URL (optional)</label>
+        <label class="label">{{#i18n 'url_opt'}}URL (optional){{/i18n}}</label>
         <div class="control">
             <input name="url" class="input" type="url" {{#unless readonly}}placeholder="https://www.wikidata.org/wiki/Q331656"{{/unless}} {{#readonly}}readonly{{/readonly}}>
         </div>
     </div>
-</div>
\ No newline at end of file
+</div>
diff --git a/frontend/src/upload/upload-source-template.hbs b/frontend/src/upload/upload-source-template.hbs
index 48b1bf2f..03b7d303 100644
--- a/frontend/src/upload/upload-source-template.hbs
+++ b/frontend/src/upload/upload-source-template.hbs
@@ -1,25 +1,31 @@
 <header>
-    <h3 class="title is-3 page-header">Upload source</h3>
+    <h3 class="title is-3 page-header">{{#i18n 'upload_source'}}Upload source{{/i18n}}</h3>
 </header>
 <div class="section upload-source">
-    
+
     <div class="field form-feedback-bar has-background-success">
-        <p class="help">Source uploaded successfully! Upload another one or <a href="/explore">go to the
-                Explorer</a></p>
+        <p class="help">
+            {{#i18n 'upload_success_before_link'}}Source uploaded successfully! Upload another one or{{/i18n}}
+            <a href="/explore">{{#i18n 'upload_success_link'}}go to the Explorer{{/i18n}}</a>{{#i18n 'upload_success_after_link'}}.{{/i18n}}
+        </p>
     </div>
     <div class="field form-feedback-bar has-background-danger has-text-white">
-        <p class="help">Uploading failed. Please try again and if this error keeps occuring, contact the site
-            administrator. Do you have permission to upload sources?</p>
+        <p class="help">{{#i18n 'upload_failed_help'}}
+            Uploading failed.
+            Please try again and if this error keeps occuring,
+            contact the site administrator.
+            Do you have permission to upload sources?
+        {{/i18n}}</p>
     </div>
     <div class="field is-grouped">
         <div class="control">
-            <button type=submit class="button is-link btn-submit">Submit</button>
+            <button type=submit class="button is-link btn-submit">{{#i18n 'submit'}}Submit{{/i18n}}</button>
         </div>
         <div class="control">
-            <button type=button class="button is-link is-light btn-preview">Preview</button>
+            <button type=button class="button is-link is-light btn-preview">{{#i18n 'preview'}}Preview{{/i18n}}</button>
         </div>
         <div class="control">
-            <button type=reset class="button is-link is-light btn-cancel">Cancel</button>
+            <button type=reset class="button is-link is-light btn-cancel">{{#i18n 'cancel'}}Cancel{{/i18n}}</button>
         </div>
     </div>
 </div>
@@ -27,8 +33,12 @@
     <div class="modal-background"></div>
     <div class="modal-card">
         <header class="modal-card-head">
-            <p class="modal-card-title">Preview source content</p>
-            <button type=button class="delete" aria-label="close">
+            <p class="modal-card-title">{{#i18n 'preview_source'}}Preview source content{{/i18n}}</p>
+            <button
+                type=button
+                class="delete"
+                aria-label="{{#i18n 'close'}}close{{/i18n}}"
+            >
                 <i class="fas fa-times"></i>
             </button>
         </header>