diff --git a/scripts/generate-file-icon-index.js b/scripts/generate-file-icon-index.js
new file mode 100644
index 0000000..a3fe1b3
--- /dev/null
+++ b/scripts/generate-file-icon-index.js
@@ -0,0 +1,62 @@
+const languageIds = require('./language-id-ext.json')
+
+const records = []
+
+document.body
+  .querySelector('table')
+  .querySelectorAll('tbody tr')
+  .forEach(tr => {
+    const [name, id, dark, light] = Array.from(tr.querySelectorAll('td'))
+    const exts = []
+    const names = []
+    id.innerHTML
+      .replace(/<sub>|<\/sub>/g, '')
+      .split(', ')
+      .map(part => {
+        const match = part.match(/<(\w+)>(.*?)<\/\1>/)
+        if (match) {
+          const [, tag, content] = match
+          if (tag === 'strong') {
+            // filenames in bold
+            names.push(content)
+          } else if (tag === 'code') {
+            // language ids in code block
+            const map = Object.values(languageIds).find(({ ids }) =>
+              (Array.isArray(ids) ? ids : [ids]).includes(content),
+            )
+            if (map && map.exts) exts.push(map.exts)
+          } else {
+            console.warn(`Found unrecognized format`, part) // unknown
+          }
+        } else if (part) {
+          // extensions are in regular fonts
+          exts.push(part.replace(/^\./, ''))
+        }
+      })
+    records.push({
+      name: name.innerText,
+      exts,
+      names,
+      icon: getSrc(dark.querySelector('img')) || getSrc(light.querySelector('img')),
+    })
+  })
+
+function getSrc(img) {
+  return img && img.src
+}
+
+const prepend = 'https://github.com/vscode-icons/vscode-icons/raw/master/icons/file_type_'
+const append = '.svg?sanitize=true'
+const separator = ':'
+const csv = records
+  .map(({ name, names, exts, icon }) =>
+    [
+      name,
+      names.join(separator),
+      exts.join(separator),
+      // icon.replace(prepend, '').replace(append, ''), // assumption: name is equal to this
+    ].join(','),
+  )
+  .join('\n')
+
+console.log(csv)
diff --git a/scripts/generate-folder-icon-index.js b/scripts/generate-folder-icon-index.js
new file mode 100644
index 0000000..8ddd743
--- /dev/null
+++ b/scripts/generate-folder-icon-index.js
@@ -0,0 +1,41 @@
+function parsePageContent() {
+  const records = []
+  document.body
+    .querySelector('table')
+    .querySelectorAll('tbody tr')
+    .forEach(tr => {
+      const [name, folderNames, closed, open] = Array.from(tr.querySelectorAll('td'))
+      const names = folderNames.innerHTML.split(', ')
+      records.push({
+        name: name.innerText,
+        names,
+        icon: {
+          closed: getSrc(closed.querySelector('img')),
+          open: getSrc(open.querySelector('img')),
+        },
+      })
+    })
+  return records
+}
+
+function getSrc(img) {
+  return img && img.src
+}
+
+function generateCSV(records) {
+  const prepend = 'https://github.com/vscode-icons/vscode-icons/raw/master/icons/folder_type_'
+  const append = '.svg?sanitize=true'
+  const separator = ':'
+  const csv = records
+    .map(({ name, names, icon }) =>
+      [
+        name,
+        names.join(separator),
+        // icon.replace(prepend, '').replace(append, ''), // assumption: name is equal to this
+      ].join(','),
+    )
+    .join('\n')
+  return csv
+}
+
+console.log(generateCSV(parsePageContent()))
diff --git a/scripts/language-id-ext.json b/scripts/language-id-ext.json
new file mode 100644
index 0000000..b4254a5
--- /dev/null
+++ b/scripts/language-id-ext.json
@@ -0,0 +1,276 @@
+{
+  "actionscript": { "ids": "nextgenas", "exts": "as" },
+  "ada": { "ids": "ada", "exts": "ada" },
+  "advpl": { "ids": "advpl", "exts": "prw" },
+  "affectscript": { "ids": "affectscript", "exts": "affect" },
+  "al": { "ids": "al", "exts": "al" },
+  "ansible": { "ids": "ansible", "exts": "ansible" },
+  "antlr": { "ids": "antlr", "exts": "g4" },
+  "anyscript": { "ids": "anyscript", "exts": "any" },
+  "apache": { "ids": "apacheconf", "exts": "htaccess" },
+  "apex": { "ids": "apex", "exts": "cls" },
+  "apib": { "ids": "apiblueprint", "exts": "apib" },
+  "apl": { "ids": "apl", "exts": "apl" },
+  "applescript": { "ids": "applescript", "exts": "applescript" },
+  "asciidoc": { "ids": "asciidoc", "exts": "adoc" },
+  "asp": { "ids": ["asp", "asp (html)"], "exts": "asp" },
+  "assembly": { "ids": ["arm", "asm"], "exts": "asm" },
+  "ats": { "ids": ["ats"], "exts": "ats" },
+  "autohotkey": { "ids": "ahk", "exts": "ahk" },
+  "autoit": { "ids": "autoit", "exts": "au3" },
+  "avro": { "ids": "avro", "exts": "avcs" },
+  "azcli": { "ids": "azcli", "exts": "azcli" },
+  "azurepipelines": {
+    "ids": "azure-pipelines",
+    "exts": "azure-pipelines.yml"
+  },
+  "ballerina": { "ids": "ballerina", "exts": "bal" },
+  "bat": { "ids": "bat", "exts": "bat" },
+  "bazel": { "ids": "bazel", "exts": "bzl" },
+  "befunge": { "ids": ["befunge", "befunge98"], "exts": "bf" },
+  "bibtex": { "ids": "bibtex", "exts": "bib" },
+  "biml": { "ids": "biml", "exts": "biml" },
+  "blade": { "ids": ["blade", "laravel-blade"], "exts": "blade.php" },
+  "bolt": { "ids": "bolt", "exts": "bolt" },
+  "c": { "ids": "c", "exts": "c" },
+  "c_al": { "ids": "c-al", "exts": "cal" },
+  "cabal": { "ids": "cabal", "exts": "cabal" },
+  "caddyfile": { "ids": "caddyfile", "exts": "Caddyfile" },
+  "ceylon": { "ids": "ceylon", "exts": "ceylon" },
+  "cfc": { "ids": "cfc", "exts": "cfc" },
+  "cfm": { "ids": "cfmhtml", "exts": "cfm" },
+  "clojure": { "ids": "clojure", "exts": "clojure" },
+  "clojurescript": { "ids": "clojurescript", "exts": "clojurescript" },
+  "cmake": { "ids": "cmake", "exts": "cmake" },
+  "cmakecache": { "ids": "cmake-cache", "exts": "CMakeCache.txt" },
+  "cobol": { "ids": "cobol", "exts": "cbl" },
+  "coffeescript": { "ids": "coffeescript", "exts": "coffee" },
+  "coldfusion": { "ids": ["cfml", "lang-cfml"], "exts": "cfml" },
+  "confluence": { "ids": ["confluence"], "exts": "confluence" },
+  "cookbook": { "ids": "cookbook", "exts": "ckbk" },
+  "cpp": { "ids": "cpp", "exts": "cpp" },
+  "crystal": { "ids": "crystal", "exts": "cr" },
+  "csharp": { "ids": "csharp", "exts": "cs" },
+  "css": { "ids": "css", "exts": "css" },
+  "cucumber": { "ids": "feature", "exts": "feature" },
+  "cuda": { "ids": "cuda", "exts": "cu" },
+  "cython": { "ids": "cython", "exts": "pyx" },
+  "dal": { "ids": "dal", "exts": "dal" },
+  "dart": { "ids": "dart", "exts": "dart" },
+  "django": { "ids": ["django-html", "django-txt"], "exts": "html" },
+  "diff": { "ids": "diff", "exts": "diff" },
+  "dlang": { "ids": ["d", "dscript", "dml", "diet"], "exts": "d" },
+  "dockerfile": { "ids": "dockerfile", "exts": "dockerfile" },
+  "dockerignore": { "ids": "ignore", "exts": "dockerignore" },
+  "doctex": { "ids": "doctex", "exts": "dtx" },
+  "dotenv": { "ids": "dotenv", "exts": "env" },
+  "dotjs": { "ids": "dotjs", "exts": "dot" },
+  "doxygen": { "ids": "doxygen", "exts": "dox" },
+  "drools": { "ids": "drools", "exts": "drl" },
+  "dylanlang": { "ids": ["dylan", "dylan-lid"], "exts": "dylan" },
+  "dustjs": { "ids": "dustjs", "exts": "dust" },
+  "edge": { "ids": "edge", "exts": "edge" },
+  "eex": { "ids": ["eex", "html-eex"], "exts": "eex" },
+  "elastic": { "ids": "es", "exts": "es" },
+  "elixir": { "ids": "elixir", "exts": "ex" },
+  "elm": { "ids": "elm", "exts": "elm" },
+  "erb": { "ids": "erb", "exts": "erb" },
+  "erlang": { "ids": "erlang", "exts": "erl" },
+  "falcon": { "ids": "falcon", "exts": "falcon" },
+  "fortran": {
+    "ids": ["fortran", "fortran-modern", "FortranFreeForm", "fortran_fixed-form"],
+    "exts": "f"
+  },
+  "freemarker": { "ids": "ftl", "exts": "ftl" },
+  "fsharp": { "ids": "fsharp", "exts": "fs" },
+  "galen": { "ids": "galen", "exts": "gspec" },
+  "gamemaker": { "ids": "gml-gms", "exts": "gml" },
+  "gamemaker2": { "ids": "gml-gms2", "exts": "gml" },
+  "gamemaker81": { "ids": "gml-gm81", "exts": "gml" },
+  "gcode": { "ids": "gcode", "exts": "gcode" },
+  "git": { "ids": ["git-commit", "git-rebase"], "exts": "git" },
+  "glsl": { "ids": "glsl", "exts": "glsl" },
+  "go": { "ids": "go", "exts": "go" },
+  "godot": { "ids": "gdscript", "exts": "gd" },
+  "graphql": { "ids": "graphql", "exts": "gql" },
+  "graphviz": { "ids": "dot", "exts": "gv" },
+  "groovy": { "ids": "groovy", "exts": "groovy" },
+  "haml": { "ids": "haml", "exts": "haml" },
+  "handlebars": { "ids": "handlebars", "exts": "hbs" },
+  "harbour": { "ids": "harbour", "exts": "prg" },
+  "haskell": { "ids": "haskell", "exts": "hs" },
+  "haxe": { "ids": ["haxe", "hxml", "Haxe AST dump"], "exts": "haxe" },
+  "helm": { "ids": "helm", "exts": "helm.tpl" },
+  "hjson": { "ids": "hjson", "exts": "hjson" },
+  "hlsl": { "ids": "hlsl", "exts": "hlsl" },
+  "homeassistant": { "ids": "home-assistant", "exts": "yaml" },
+  "hosts": { "ids": "hosts", "exts": "hosts" },
+  "html": { "ids": "html", "exts": "html" },
+  "http": { "ids": "http", "exts": "http" },
+  "hunspell": { "ids": ["hunspell.aff", "hunspell.dic"], "exts": "aff" },
+  "icl": { "ids": "icl", "exts": "icl" },
+  "imba": { "ids": "imba", "exts": "imba" },
+  "informix": { "ids": "4GL", "exts": "4gl" },
+  "ini": { "ids": "ini", "exts": "ini" },
+  "ink": { "ids": "ink", "exts": "ink" },
+  "innosetup": { "ids": "innosetup", "exts": "iss" },
+  "io": { "ids": "io", "exts": "io" },
+  "latex": { "ids": "latex", "exts": "tex" },
+  "janet": { "ids": "janet", "exts": "janet" },
+  "java": { "ids": "java", "exts": "java" },
+  "javascript": { "ids": "javascript", "exts": "js" },
+  "javascriptreact": { "ids": "javascriptreact", "exts": "jsx" },
+  "jekyll": { "ids": "jekyll", "exts": "jekyll" },
+  "jenkins": {
+    "ids": ["jenkins", "declarative", "jenkinsfile"],
+    "exts": "jenkins"
+  },
+  "jinja": { "ids": "jinja", "exts": "jinja" },
+  "json": { "ids": "json", "exts": "json" },
+  "jsonc": { "ids": "jsonc", "exts": "jsonc" },
+  "jsonnet": { "ids": "jsonnet", "exts": "jsonnet" },
+  "json5": { "ids": "json5", "exts": "json5" },
+  "julia": { "ids": ["julia", "juliamarkdown"], "exts": "jl" },
+  "iodine": { "ids": "iodine", "exts": "id" },
+  "kivy": { "ids": "kivy", "exts": "kv" },
+  "kos": { "ids": "kos", "exts": "ks" },
+  "kotlin": { "ids": "kotlin", "exts": "kt" },
+  "less": { "ids": "less", "exts": "less" },
+  "lisp": { "ids": "lisp", "exts": "lisp" },
+  "literatehaskell": { "ids": ["literate haskell"], "exts": "lhs" },
+  "lolcode": { "ids": "lolcode", "exts": "lol" },
+  "lsl": { "ids": "lsl", "exts": "lsl" },
+  "lua": { "ids": "lua", "exts": "lua" },
+  "makefile": { "ids": "makefile", "exts": "mk" },
+  "markdown": { "ids": "markdown", "exts": "md" },
+  "marko": { "ids": "marko", "exts": "marko" },
+  "matlab": { "ids": "matlab", "exts": "mat" },
+  "maxscript": { "ids": "maxscript", "exts": "ms" },
+  "mediawiki": { "ids": "mediawiki", "exts": "mediawiki" },
+  "mel": { "ids": "mel", "exts": "mel" },
+  "meson": { "ids": "meson", "exts": "meson.build" },
+  "mjml": { "ids": "mjml", "exts": "mjml" },
+  "mlang": { "ids": ["mlang", "powerquerymlanguage"], "exts": "pq" },
+  "mojolicious": { "ids": "mojolicious", "exts": "ep" },
+  "mongo": { "ids": "mongo", "exts": "mongo" },
+  "mson": { "ids": "mson", "exts": "mson" },
+  "nearley": { "ids": "nearley", "exts": "ne" },
+  "nim": { "ids": ["nim", "nimble"], "exts": "nim" },
+  "nsis": { "ids": ["nsis", "nfl", "nsl", "bridlensis"], "exts": "nsi" },
+  "nunjucks": { "ids": "nunjucks", "exts": "nunjucks" },
+  "objectivec": { "ids": "objective-c", "exts": "m" },
+  "objectivecpp": { "ids": "objective-cpp", "exts": "mm" },
+  "ocaml": { "ids": ["ocaml", "ocamllex", "menhir"], "exts": "ml" },
+  "openEdge": { "ids": "abl", "exts": "w" },
+  "openHAB": { "ids": "openhab", "exts": "things" },
+  "pascal": { "ids": ["pascal", "objectpascal"], "exts": "pas" },
+  "pddl": { "ids": "pddl", "exts": "pddl" },
+  "pddlplan": { "ids": "plan", "exts": "plan" },
+  "pddlhappenings": { "ids": "happenings", "exts": "happenings" },
+  "perl": { "ids": "perl", "exts": "pl" },
+  "perl6": { "ids": "perl6", "exts": "pl6" },
+  "pgsql": { "ids": "pgsql", "exts": "pgsql" },
+  "php": { "ids": "php", "exts": "php" },
+  "pine": { "ids": "pine", "exts": "pine" },
+  "pip": { "ids": "pip-requirements", "exts": "requirements.txt" },
+  "plaintext": { "ids": "plaintext", "exts": "txt" },
+  "platformio": {
+    "ids": ["platformio-debug.disassembly", "platformio-debug.memoryview", "platformio-debug.asm"],
+    "exts": "dbgasm"
+  },
+  "plsql": { "ids": ["plsql", "oracle"], "exts": "ddl" },
+  "polymer": { "ids": "polymer", "exts": "polymer" },
+  "pony": { "ids": "pony", "exts": "pony" },
+  "postcss": { "ids": "postcss", "exts": "pcss" },
+  "powershell": { "ids": "powershell", "exts": "ps1" },
+  "prisma": { "ids": "prisma", "exts": "prisma" },
+  "processinglang": { "ids": "pde", "exts": "pde" },
+  "prolog": { "ids": "prolog", "exts": "pro" },
+  "prometheus": { "ids": "prometheus", "exts": "rules" },
+  "properties": { "ids": "properties", "exts": "properties" },
+  "protobuf": { "ids": ["proto3", "proto"], "exts": "proto" },
+  "pug": { "ids": "jade", "exts": "pug" },
+  "puppet": { "ids": "puppet", "exts": "pp" },
+  "purescript": { "ids": "purescript", "exts": "purs" },
+  "pyret": { "ids": "pyret", "exts": "arr" },
+  "python": { "ids": "python", "exts": "py" },
+  "qlik": { "ids": "qlik", "exts": "qvs" },
+  "qml": { "ids": "qml", "exts": "qml" },
+  "qsharp": { "ids": "qsharp", "exts": "qs" },
+  "r": { "ids": "r", "exts": "r" },
+  "racket": { "ids": "racket", "exts": "rkt" },
+  "razor": { "ids": ["razor", "aspnetcorerazor"], "exts": "cshtml" },
+  "raml": { "ids": "raml", "exts": "raml" },
+  "reason": { "ids": "reason", "exts": "re" },
+  "red": { "ids": "red", "exts": "red" },
+  "restructuredtext": { "ids": "restructuredtext", "exts": "rst" },
+  "riot": { "ids": "riot", "exts": "tag" },
+  "robot": { "ids": "robot", "exts": "robot" },
+  "ruby": { "ids": "ruby", "exts": "rb" },
+  "rust": { "ids": "rust", "exts": "rs" },
+  "san": { "ids": "san", "exts": "san" },
+  "sbt": { "ids": "sbt", "exts": "sbt" },
+  "scala": { "ids": "scala", "exts": "scala" },
+  "scilab": { "ids": "scilab", "exts": "sce" },
+  "scss": { "ids": "scss", "exts": "scss" },
+  "sdlang": { "ids": "sdl", "exts": "sdl" },
+  "shaderlab": { "ids": "shaderlab", "exts": "shader" },
+  "shellscript": { "ids": "shellscript", "exts": "sh" },
+  "slang": { "ids": "slang", "exts": "slang" },
+  "slice": { "ids": ["slice"], "exts": "ice" },
+  "slim": { "ids": ["slim"], "exts": "slim" },
+  "silverstripe": { "ids": "silverstripe", "exts": "ss" },
+  "skipper": { "ids": ["eskip"], "exts": "eskip" },
+  "smarty": { "ids": ["smarty"], "exts": "tpl" },
+  "snort": { "ids": ["snort"], "exts": "snort" },
+  "solidity": { "ids": ["solidity"], "exts": "sol" },
+  "sqf": { "ids": "sqf", "exts": "sqf" },
+  "sql": { "ids": "sql", "exts": "sql" },
+  "squirrel": { "ids": "squirrel", "exts": "nut" },
+  "stan": { "ids": "stan", "exts": "stan" },
+  "stata": { "ids": "stata", "exts": "do" },
+  "stencil": { "ids": "stencil", "exts": "stencil" },
+  "stencilhtml": { "ids": "stencil-html", "exts": "html.stencil" },
+  "stylable": { "ids": "stylable", "exts": "st.css" },
+  "styled": { "ids": "source.css.styled", "exts": "styled" },
+  "stylus": { "ids": "stylus", "exts": "styl" },
+  "svelte": { "ids": "svelte", "exts": "svelte" },
+  "swagger": { "ids": ["Swagger", "swagger"], "exts": "swagger" },
+  "swift": { "ids": "swift", "exts": "swift" },
+  "swig": { "ids": "swig", "exts": "swig" },
+  "systemd": { "ids": "systemd-unit-file", "exts": "link" },
+  "systemverilog": { "ids": "systemverilog", "exts": "sv" },
+  "t4": { "ids": "t4", "exts": "tt" },
+  "templatetoolkit": { "ids": "tt", "exts": "tt3" },
+  "tera": { "ids": "tera", "exts": "tera" },
+  "terraform": { "ids": "terraform", "exts": "tf" },
+  "tex": { "ids": "tex", "exts": "sty" },
+  "textile": { "ids": "textile", "exts": "textile" },
+  "textmatejson": { "ids": "json-tmlanguage", "exts": "JSON-tmLanguage" },
+  "textmateyaml": { "ids": "yaml-tmlanguage", "exts": "YAML-tmLanguage" },
+  "toml": { "ids": "toml", "exts": "toml" },
+  "ttcn": { "ids": "ttcn", "exts": "ttcn3" },
+  "twig": { "ids": "twig", "exts": "twig" },
+  "typescript": { "ids": "typescript", "exts": "ts" },
+  "typescriptreact": { "ids": "typescriptreact", "exts": "tsx" },
+  "typo3": { "ids": "typoscript", "exts": "typoscript" },
+  "vb": { "ids": "vb", "exts": "vb" },
+  "vba": { "ids": "vba", "exts": "cls" },
+  "vbscript": { "ids": "vbscript", "exts": "wsf" },
+  "velocity": { "ids": "velocity", "exts": "vm" },
+  "verilog": { "ids": "verilog", "exts": "v" },
+  "vhdl": { "ids": "vhdl", "exts": "vhdl" },
+  "viml": { "ids": "viml", "exts": "vim" },
+  "vlang": { "ids": "v", "exts": "v" },
+  "volt": { "ids": "volt", "exts": "volt" },
+  "vue": { "ids": "vue", "exts": "vue" },
+  "wasm": { "ids": ["wasm", "wat"], "exts": "wasm" },
+  "wolfram": { "ids": "wolfram", "exts": "wl" },
+  "wurst": { "ids": ["wurstlang", "wurst"], "exts": "wurst" },
+  "wxml": { "ids": "wxml", "exts": "wxml" },
+  "xml": { "ids": "xml", "exts": "xml" },
+  "xquery": { "ids": "xquery", "exts": "xquery" },
+  "xsl": { "ids": "xsl", "exts": "xsl" },
+  "yaml": { "ids": "yaml", "exts": "yaml" },
+  "yang": { "ids": "yang", "exts": "yang" }
+}