diff --git a/doc/syntastic-checkers.txt b/doc/syntastic-checkers.txt
index b2c347ba8..5a10d99e1 100644
--- a/doc/syntastic-checkers.txt
+++ b/doc/syntastic-checkers.txt
@@ -107,6 +107,7 @@ SYNTAX CHECKERS BY LANGUAGE                          *syntastic-checkers-lang*
     Solidity.................................|syntastic-checkers-solidity|
     SQL......................................|syntastic-checkers-sql|
     Stylus...................................|syntastic-checkers-stylus|
+    SVG......................................|syntastic-checkers-svg|
 
     Tcl......................................|syntastic-checkers-tcl|
     TeX......................................|syntastic-checkers-tex|
@@ -6563,6 +6564,86 @@ You might also find useful the "vim-stylus" plugin:
 
     https://github.com/wavded/vim-stylus
 
+==============================================================================
+SYNTAX CHECKERS FOR SVG                               *syntastic-checkers-svg*
+
+The following checkers are available for SVG (filetype "svg"):
+
+    1. validator................|syntastic-svg-validator|
+
+------------------------------------------------------------------------------
+1. Validator                                         *syntastic-svg-validator*
+
+Name:        validator
+Maintainer:  LCD 47 <lcd047@gmail.com>
+
+"Validator" is a non-DTD-based HTML linter.  See the project's page for
+details:
+
+    https://validator.github.io/validator/
+
+As a syntastic linter, you can validate your files against the online service
+(see https://validator.nu/), or you can install "vnu.jar":
+
+    https://github.com/validator/validator/releases/latest
+
+then run it as a HTTP server: >
+    $ java -Xss512k -cp /path/to/vnu.jar nu.validator.servlet.Main 8888
+<
+Requirement~
+
+This checker uses cURL:
+
+    http://curl.haxx.se/
+
+Checker options~
+
+                                             *'g:syntastic_svg_validator_api'*
+Type: string
+Default: "https://validator.nu/"
+URL of the service to use for checking. Leave it to the default to run the
+checks against "https://validator.nu/", or set it to "http://localhost:8888/"
+if you have "vnu.jar" installed, and you're running it as a standalone HTTP
+server. See:
+
+    https://validator.github.io/validator/#standalone
+
+                                          *'g:syntastic_svg_validator_parser'*
+Type: string
+Default: empty
+Parser to use. Legal values are: "xml", "xmldtd", "html", "html5", "html4",
+and "html4tr". Set it to "html5" to check HTML5 files. References:
+
+    https://wiki.whatwg.org/wiki/Validator.nu_Common_Input_Parameters#parser
+
+                                        *'g:syntastic_svg_validator_nsfilter'*
+Type: string
+Default: empty
+Sets the "nsfilter" for the parser. See:
+
+    https://wiki.whatwg.org/wiki/Validator.nu_Common_Input_Parameters#nsfilter
+
+                                            *'g:syntastic_svg_validator_exec'*
+Type: string
+Default: "curl"
+Path to the "cURL" executable. Override it with a full path if your "cURL" is
+not installed in a standard location.
+
+This checker doesn't call the "makeprgBuild()" function, and thus it ignores
+the usual 'g:syntastic_svg_validator_<option>' variables. The only exception
+is 'g:syntastic_svg_validator_exec', which can be used to override the path
+to the "cURL" executable.
+
+Note~
+
+Non-zero exit codes from "cURL" are typically network errors, and are signaled
+by syntastic with messages such as: >
+    syntastic: error: checker svg/validator returned abnormal status 26
+<
+You can lookup the meaning of these codes in cURL's manual:
+
+    https://curl.haxx.se/docs/manpage.html#EXIT
+
 ==============================================================================
 SYNTAX CHECKERS FOR TCL                               *syntastic-checkers-tcl*
 
@@ -7375,6 +7456,7 @@ The following checkers are available for xHTML (filetype "xhtml"):
     1. HTML Tidy................|syntastic-xhtml-tidy|
     2. jshint...................|syntastic-xhtml-jshint|
     3. proselint................|syntastic-xhtml-proselint|
+    4. validator................|syntastic-xhtml-validator|
 
 ------------------------------------------------------------------------------
 1. HTML tidy                                            *syntastic-xhtml-tidy*
@@ -7470,6 +7552,79 @@ See also: |syntastic-asciidoc-proselint|, |syntastic-help-proselint|,
 |syntastic-rst-proselint|, |syntastic-tex-proselint|,
 |syntastic-texinfo-proselint|, |syntastic-text-proselint|.
 
+------------------------------------------------------------------------------
+4. Validator                                       *syntastic-xhtml-validator*
+
+Name:        validator
+Maintainer:  LCD 47 <lcd047@gmail.com>
+
+"Validator" is a non-DTD-based HTML linter.  See the project's page for
+details:
+
+    https://validator.github.io/validator/
+
+As a syntastic linter, you can validate your files against the online service
+(see https://validator.nu/), or you can install "vnu.jar":
+
+    https://github.com/validator/validator/releases/latest
+
+then run it as a HTTP server: >
+    $ java -Xss512k -cp /path/to/vnu.jar nu.validator.servlet.Main 8888
+<
+Requirement~
+
+This checker uses cURL:
+
+    http://curl.haxx.se/
+
+Checker options~
+
+                                           *'g:syntastic_xhtml_validator_api'*
+Type: string
+Default: "https://validator.nu/"
+URL of the service to use for checking. Leave it to the default to run the
+checks against "https://validator.nu/", or set it to "http://localhost:8888/"
+if you have "vnu.jar" installed, and you're running it as a standalone HTTP
+server. See:
+
+    https://validator.github.io/validator/#standalone
+
+                                        *'g:syntastic_xhtml_validator_parser'*
+Type: string
+Default: empty
+Parser to use. Legal values are: "xml", "xmldtd", "html", "html5", "html4",
+and "html4tr". Set it to "html5" to check HTML5 files. References:
+
+    https://wiki.whatwg.org/wiki/Validator.nu_Common_Input_Parameters#parser
+
+                                      *'g:syntastic_xhtml_validator_nsfilter'*
+Type: string
+Default: empty
+Sets the "nsfilter" for the parser. See:
+
+    https://wiki.whatwg.org/wiki/Validator.nu_Common_Input_Parameters#nsfilter
+
+                                          *'g:syntastic_xhtml_validator_exec'*
+Type: string
+Default: "curl"
+Path to the "cURL" executable. Override it with a full path if your "cURL" is
+not installed in a standard location.
+
+This checker doesn't call the "makeprgBuild()" function, and thus it ignores
+the usual 'g:syntastic_xhtml_validator_<option>' variables. The only exception
+is 'g:syntastic_xhtml_validator_exec', which can be used to override the path
+to the "cURL" executable.
+
+Note~
+
+Non-zero exit codes from "cURL" are typically network errors, and are signaled
+by syntastic with messages such as: >
+    syntastic: error: checker xhtml/validator returned abnormal status 26
+<
+You can lookup the meaning of these codes in cURL's manual:
+
+    https://curl.haxx.se/docs/manpage.html#EXIT
+
 ==============================================================================
 SYNTAX CHECKERS FOR XML                               *syntastic-checkers-xml*
 
diff --git a/syntax_checkers/html/validator.vim b/syntax_checkers/html/validator.vim
index 007be8436..2e0c57096 100644
--- a/syntax_checkers/html/validator.vim
+++ b/syntax_checkers/html/validator.vim
@@ -30,13 +30,18 @@ endif
 let s:save_cpo = &cpo
 set cpo&vim
 
-function! SyntaxCheckers_html_validator_GetLocList() dict
+function! SyntaxCheckers_html_validator_GetLocListForType(exec_escaped, type)
     let buf = bufnr('')
     let fname = syntastic#util#shescape(fnamemodify(bufname(buf), ':p'))
-    let makeprg = self.getExecEscaped() . ' -q -L -s --compressed -F out=gnu -F asciiquotes=yes' .
-        \ (g:syntastic_html_validator_parser !=# '' ? ' -F parser=' . g:syntastic_html_validator_parser : '') .
-        \ (g:syntastic_html_validator_nsfilter !=# '' ? ' -F nsfilter=' . g:syntastic_html_validator_nsfilter : '') .
-        \ ' -F doc=@' . fname . '\;type=text/html\;filename=' . fname . ' ' . g:syntastic_html_validator_api
+    let media_type =
+        \ a:type ==# 'html' ? 'text/html' :
+        \ a:type ==# 'svg' ? 'image/svg+xml' :
+        \ a:type ==# 'xhtml' ? 'application/xhtml+xml' :
+        \ ''
+    let makeprg = a:exec_escaped . ' -q -L -s --compressed -F out=gnu -F asciiquotes=yes' .
+        \ (g:syntastic_{a:type}_validator_parser !=# '' ? ' -F parser=' . g:syntastic_{a:type}_validator_parser : '') .
+        \ (g:syntastic_{a:type}_validator_nsfilter !=# '' ? ' -F nsfilter=' . g:syntastic_{a:type}_validator_nsfilter : '') .
+        \ ' -F doc=@' . fname . (media_type !=# '' ? '\;type=' . media_type : '') . '\;filename=' . fname . ' ' . g:syntastic_{a:type}_validator_api
 
     let errorformat =
         \ '%E"%f":%l: %trror: %m,' .
@@ -59,6 +64,10 @@ function! SyntaxCheckers_html_validator_GetLocList() dict
         \ 'returns': [0] })
 endfunction
 
+function! SyntaxCheckers_html_validator_GetLocList() dict
+    return SyntaxCheckers_html_validator_GetLocListForType(self.getExecEscaped(), 'html')
+endfunction
+
 call g:SyntasticRegistry.CreateAndRegisterChecker({
     \ 'filetype': 'html',
     \ 'name': 'validator',
diff --git a/syntax_checkers/svg/validator.vim b/syntax_checkers/svg/validator.vim
new file mode 100644
index 000000000..d39361b26
--- /dev/null
+++ b/syntax_checkers/svg/validator.vim
@@ -0,0 +1,47 @@
+"============================================================================
+"File:        validator.vim
+"Description: Syntax checking plugin for syntastic
+"Maintainer:  LCD 47 <lcd047 at gmail dot com>
+"License:     This program is free software. It comes without any warranty,
+"             to the extent permitted by applicable law. You can redistribute
+"             it and/or modify it under the terms of the Do What The Fuck You
+"             Want To Public License, Version 2, as published by Sam Hocevar.
+"             See http://sam.zoy.org/wtfpl/COPYING for more details.
+"
+"============================================================================
+
+if exists('g:loaded_syntastic_svg_validator_checker')
+    finish
+endif
+let g:loaded_syntastic_svg_validator_checker=1
+
+if !exists('g:syntastic_svg_validator_api')
+    let g:syntastic_svg_validator_api = 'https://validator.nu/'
+endif
+
+if !exists('g:syntastic_svg_validator_parser')
+    let g:syntastic_svg_validator_parser = ''
+endif
+
+if !exists('g:syntastic_svg_validator_nsfilter')
+    let g:syntastic_svg_validator_nsfilter = ''
+endif
+
+let s:save_cpo = &cpo
+set cpo&vim
+
+function! SyntaxCheckers_svg_validator_GetLocList() dict
+    return SyntaxCheckers_html_validator_GetLocListForType(self.getExecEscaped(), 'svg')
+endfunction
+
+runtime! syntax_checkers/html/validator.vim
+
+call g:SyntasticRegistry.CreateAndRegisterChecker({
+    \ 'filetype': 'svg',
+    \ 'name': 'validator',
+    \ 'exec': 'curl' })
+
+let &cpo = s:save_cpo
+unlet s:save_cpo
+
+" vim: set sw=4 sts=4 et fdm=marker:
diff --git a/syntax_checkers/xhtml/validator.vim b/syntax_checkers/xhtml/validator.vim
new file mode 100644
index 000000000..7985a8ac5
--- /dev/null
+++ b/syntax_checkers/xhtml/validator.vim
@@ -0,0 +1,47 @@
+"============================================================================
+"File:        validator.vim
+"Description: Syntax checking plugin for syntastic
+"Maintainer:  LCD 47 <lcd047 at gmail dot com>
+"License:     This program is free software. It comes without any warranty,
+"             to the extent permitted by applicable law. You can redistribute
+"             it and/or modify it under the terms of the Do What The Fuck You
+"             Want To Public License, Version 2, as published by Sam Hocevar.
+"             See http://sam.zoy.org/wtfpl/COPYING for more details.
+"
+"============================================================================
+
+if exists('g:loaded_syntastic_xhtml_validator_checker')
+    finish
+endif
+let g:loaded_syntastic_xhtml_validator_checker=1
+
+if !exists('g:syntastic_xhtml_validator_api')
+    let g:syntastic_xhtml_validator_api = 'https://validator.nu/'
+endif
+
+if !exists('g:syntastic_xhtml_validator_parser')
+    let g:syntastic_xhtml_validator_parser = ''
+endif
+
+if !exists('g:syntastic_xhtml_validator_nsfilter')
+    let g:syntastic_xhtml_validator_nsfilter = ''
+endif
+
+let s:save_cpo = &cpo
+set cpo&vim
+
+function! SyntaxCheckers_xhtml_validator_GetLocList() dict
+    return SyntaxCheckers_html_validator_GetLocListForType(self.getExecEscaped(), 'xhtml')
+endfunction
+
+runtime! syntax_checkers/html/validator.vim
+
+call g:SyntasticRegistry.CreateAndRegisterChecker({
+    \ 'filetype': 'xhtml',
+    \ 'name': 'validator',
+    \ 'exec': 'curl' })
+
+let &cpo = s:save_cpo
+unlet s:save_cpo
+
+" vim: set sw=4 sts=4 et fdm=marker: