diff --git a/toolkit/locales/en-US/chrome/global/aboutNetworking.dtd b/toolkit/locales/en-US/chrome/global/aboutNetworking.dtd
deleted file mode 100644
index 63ecb44fddd3..000000000000
--- a/toolkit/locales/en-US/chrome/global/aboutNetworking.dtd
+++ /dev/null
@@ -1,59 +0,0 @@
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-HTTP Logging for instructions on how to use this tool.">
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diff --git a/toolkit/locales/en-US/toolkit/about/aboutNetworking.ftl b/toolkit/locales/en-US/toolkit/about/aboutNetworking.ftl
new file mode 100644
index 000000000000..a3f4e0d518fc
--- /dev/null
+++ b/toolkit/locales/en-US/toolkit/about/aboutNetworking.ftl
@@ -0,0 +1,61 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+title = About Networking
+warning = This is very experimental. Do not use without adult supervision.
+show-next-time-checkbox = Show this warning next time
+ok = OK
+http = HTTP
+sockets = Sockets
+dns = DNS
+websockets = WebSockets
+refresh = Refresh
+auto-refresh = Autorefresh every 3 seconds
+hostname = Hostname
+port = Port
+http2 = HTTP/2
+ssl = SSL
+active = Active
+idle = Idle
+host = Host
+tcp = TCP
+sent = Sent
+received = Received
+family = Family
+trr = TRR
+addresses = Addresses
+expires = Expires (Seconds)
+messages-sent = Messages Sent
+messages-received = Messages Received
+bytes-sent = Bytes Sent
+bytes-received = Bytes Received
+logging = Logging
+log-tutorial =
+ See HTTP Logging
+ for instructions on how to use this tool.
+current-log-file = Current Log File:
+current-log-modules = Current Log Modules:
+set-log-file = Set Log File
+set-log-modules = Set Log Modules
+start-logging = Start Logging
+stop-logging = Stop Logging
+dns-lookup = DNS Lookup
+dns-lookup-button = Resolve
+dns-domain = Domain
+dns-lookup-table-column = IPs
+rcwn = RCWN Stats
+rcwn-status = RCWN Status
+rcwn-cache-won-count = Cache won count
+rcwn-net-won-count = Net won count
+total-network-requests = Total network request count
+rcwn-operation = Cache Operation
+rcwn-perf-open = Open
+rcwn-perf-read = Read
+rcwn-perf-write = Write
+rcwn-perf-entry-open = Entry Open
+rcwn-avg-short = Short Average
+rcwn-avg-long = Long Average
+rcwn-std-dev-long = Long Standard Deviation
+rcwn-cache-slow = Cache slow count
+rcwn-cache-not-slow = Cache not slow count
diff --git a/toolkit/locales/jar.mn b/toolkit/locales/jar.mn
index b823d47bc8e8..53435714a83a 100644
--- a/toolkit/locales/jar.mn
+++ b/toolkit/locales/jar.mn
@@ -11,7 +11,6 @@
% locale global @AB_CD@ %locale/@AB_CD@/global/
locale/@AB_CD@/global/aboutReader.properties (%chrome/global/aboutReader.properties)
locale/@AB_CD@/global/aboutRights.dtd (%chrome/global/aboutRights.dtd)
- locale/@AB_CD@/global/aboutNetworking.dtd (%chrome/global/aboutNetworking.dtd)
locale/@AB_CD@/global/aboutStudies.properties (%chrome/global/aboutStudies.properties)
locale/@AB_CD@/global/aboutServiceWorkers.dtd (%chrome/global/aboutServiceWorkers.dtd)
locale/@AB_CD@/global/aboutServiceWorkers.properties (%chrome/global/aboutServiceWorkers.properties)