<p></p>
<p><b>@AntonKhorev</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/5117#discussion_r1758644634">app/views/traces/new.html.erb</a>:</p>
<pre style='color:#555'>> @@ -3,7 +3,8 @@
 <% end %>
 
 <%= bootstrap_form_for @trace, :url => { :action => "create" }, :html => { :multipart => true } do |f| %>
-  <%= f.file_field :gpx_file, :placeholder => t("helpers.file.prompt") %>
+  <%= f.file_field :gpx_file, :placeholder => t("helpers.file.prompt"),
+                              :help => ".gpx, .tar.gz, .tar.bz2, .tar, .zip, .gpx.gz, .gpx.bz2" %>
</pre>
<p dir="auto">Are you not putting the help string into <code class="notranslate">en.yml</code> <a href="https://github.com/openstreetmap/openstreetmap-website/blob/0423d18a8f5b232aa2a08b55351bee553047fb81/config/locales/en.yml#L153">help scope</a> on purpose, for it not to show up in translations because there's nothing to translate?</p>

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