diff --git a/README.md b/README.md
index fc5248b..96a2f0e 100644
--- a/README.md
+++ b/README.md
@@ -27,3 +27,164 @@ This is a repository of bangs used by [Kagi Search](https://kagi.com). It does n
 
 New bangs are accepted if:
 - The trigger is not a proper word (except for brands/trademarks, i.e. "amazon")
+
+## Categories
+
+This is a list of possible categories, with their corresponding subcategories. New subcategories can be added as-needed.
+
+- Entertainment:
+  - Audio
+  - Blogs
+  - Blogs (intl)
+  - Comics
+  - Events
+  - Forum
+  - Games (Minecraft)
+  - Games (Pokemon)
+  - Games (WOW)
+  - Games (general)
+  - Games (offline)
+  - Games (specific)
+  - Misc
+  - Movies
+  - Music
+  - Radio
+  - Sports
+  - TV
+- Man Page:
+  - Sysadmin
+- Multimedia:
+  - Books
+  - Docs
+  - Games (general)
+  - General
+  - Images
+  - Movies
+  - Music
+  - Music (Folk)
+  - Music (Lyrics)
+  - Video
+- News:
+  - Aggregators
+  - Broadcast
+  - Business
+  - International
+  - Magazine
+  - Magazine (car)
+  - Magazine (fashion)
+  - Newspaper
+  - Newspaper (intl)
+  - Online
+  - Specialty
+  - Weather
+- Online Services:
+  - Events
+  - Google
+  - Jobs
+  - Maps
+  - Search
+  - Search (DDG)
+  - Search (Private)
+  - Search (Real-time)
+  - Search (non-US)
+  - Social
+  - Social (intl)
+  - Social news/links
+  - Tools
+  - Tools (URLs)
+  - Tools (fundraising)
+  - Tracking
+- Research:
+  - Academic
+  - Academic (biology)
+  - Academic (math/cs)
+  - Food
+  - Government
+  - Health
+  - Law
+  - Learning
+  - Learning (intl)
+  - Local
+  - Real Estate
+  - Reference
+  - Reference (fun)
+  - Reference (religion)
+  - Reference (science)
+  - Reference (words intl)
+  - Reference (words)
+  - Topical
+  - Travel
+- Shopping:
+  - Big box/department
+  - Online
+  - Online (deals)
+  - Online (intl)
+  - Online (marketplace)
+  - Services
+  - Tech
+  - Tech (domains)
+- Tech:
+  - Blogs
+  - Blogs (intl)
+  - Chakra
+  - Companies
+  - Cryptocurrency
+  - Design
+  - Domains
+  - Downloads
+  - Downloads (add-ons)
+  - Downloads (apps)
+  - Downloads (code)
+  - Downloads (software)
+  - Language (perl)
+  - Languages (.net)
+  - Languages (Crystal)
+  - Languages (Mathematica)
+  - Languages (Matlab)
+  - Languages (c++)
+  - Languages (clojure)
+  - Languages (cocoa)
+  - Languages (coldfusion)
+  - Languages (csharp)
+  - Languages (d)
+  - Languages (erlang)
+  - Languages (go)
+  - Languages (haskell)
+  - Languages (html)
+  - Languages (java)
+  - Languages (javascript)
+  - Languages (latex)
+  - Languages (lisp)
+  - Languages (lua)
+  - Languages (other)
+  - Languages (perl)
+  - Languages (php)
+  - Languages (python)
+  - Languages (r)
+  - Languages (racket)
+  - Languages (ruby)
+  - Languages (scala)
+  - Languages (scheme)
+  - Languages (vala)
+  - Libraries/Frameworks
+  - Libraries/Frameworks (KDE)
+  - Libraries/Frameworks (wordpress)
+  - Programming
+  - Search (DDG)
+  - Startups
+  - Sysadmin
+  - Sysadmin (Arch)
+  - Sysadmin (Fedora)
+  - Sysadmin (FreeBSD)
+  - Sysadmin (Gentoo)
+  - Sysadmin (RedHat)
+  - Sysadmin (Ubuntu)
+  - Sysadmin (debian)
+  - Sysadmin (man)
+  - Sysadmin (network)
+  - Sysadmin (packages)
+  - Tools
+  - Tools (URLs)
+- Translation:
+  - General
+  - Google
diff --git a/data/bangs.schema.json b/data/bangs.schema.json
index fe5d49f..cc2e106 100644
--- a/data/bangs.schema.json
+++ b/data/bangs.schema.json
@@ -6,7 +6,18 @@
     "type": "object",
     "properties": {
       "c": {
-        "type": "string"
+        "type": "string",
+        "enum": [
+          "Entertainment",
+          "Man Page",
+          "Multimedia",
+          "News",
+          "Online Services",
+          "Research",
+          "Shopping",
+          "Tech",
+          "Translation"
+        ]
       },
       "d": {
         "type": "string"