.svg files are more often than not vector files. You need to exceed 36 swap files for a .svg file to come from Vim.
@@ -1,5 +1,6 @@
# Swap
[._]*.s[a-v][a-z]
+!*.svg # comment out if you don't need vector files
[._]*.sw[a-p]
[._]s[a-rt-v][a-z]
[._]ss[a-gi-z]