diff --git a/.tx/config b/.tx/config
index 7d580085..400d92b3 100644
--- a/.tx/config
+++ b/.tx/config
@@ -13,6 +13,13 @@ source_file = docs/_build/gettext/codelist.pot
 source_lang = en
 type = PO
 
+[bods-v02.svg]
+file_filter = docs/locale/<lang>/LC_MESSAGES/svg.po
+source_file = docs/_build/gettext/svg.pot
+source_lang = en
+type = PO
+
+
 [bods-v02.index]
 file_filter = docs/locale/<lang>/LC_MESSAGES/index.po
 source_file = docs/_build/gettext/index.pot
diff --git a/README.md b/README.md
index e30e3e3b..69d2a33e 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,7 @@ You also need to make sure you have `gettext` and `pybabel` installed in whateve
 ```
 $ apt-get install gettext
 $ apt-get install python-babel
+$ apt-get install itstool
 ```
 
 And you need to get a [Transifex API key](https://www.transifex.com/user/settings/api/), make sure you have access to the [BODS project on Transifex](https://www.transifex.com/OpenDataServices/bods-v01)
@@ -72,6 +73,10 @@ Run the following commands from the root directory unless otherwise specified (e
 
 1. Run `pybabel extract -F babel_bods_codelist.cfg . -o docs/_build/gettext/codelist.pot` to extract translatable English strings from the codelists.
 
+**If you modified an SVG diagram** also:
+
+1. Run `itstool -i svg-its-rules.xml -o docs/_build/gettext/svg.pot docs/_assets/*.svg` to extract translatable English strings from the SVGs.
+
 **If you added, deleted or renamed** files or you want to use a **different Transifex project**, run (from root, ie. `cd ../`):
 
 ```
diff --git a/requirements.txt b/requirements.txt
index ac188e76..7b5c7547 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 sphinx-intl==0.9.11
-transifex-client==0.13.5
+transifex-client==0.13.6
 sphinx-rtd-theme==0.4.2
 CommonMark==0.7.5
 -e git+https://github.com/rtfd/recommonmark.git@450909bdcf4c5eafde7c89696006530ba7cc78de#egg=recommonmark
diff --git a/svg-its-rules.xml b/svg-its-rules.xml
new file mode 100644
index 00000000..22e3fb18
--- /dev/null
+++ b/svg-its-rules.xml
@@ -0,0 +1,9 @@
+<!-- Based on example its-rules.xml at https://www.w3.org/TR/SVGTiny12/i18n.html#SVGi18nl10nmarkup -->
+<its:rules xmlns:its="http://www.w3.org/2005/11/its" version="1.0" 
+           xmlns:svg="http://www.w3.org/2000/svg">
+  <its:translateRule selector="//svg:*" translate="no"/>
+  <its:translateRule selector="//svg:text | //svg:tspan | //svg:textArea | 
+                               //svg:title | //svg:desc | //svg:metadata |
+                               //svg:flowPara" 
+                               translate="yes"/> 
+</its:rules>