diff --git a/Cargo.lock b/Cargo.lock
index 96acc8455..95af5047f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -72,6 +72,7 @@ dependencies = [
  "intl-memoizer",
  "itertools 0.10.1",
  "lazy_static",
+ "linkcheck",
  "nom 7.0.0-alpha1",
  "num-integer",
  "num_enum",
@@ -84,7 +85,7 @@ dependencies = [
  "pulldown-cmark",
  "rand 0.8.4",
  "regex",
- "reqwest",
+ "reqwest 0.11.3",
  "rusqlite",
  "scopeguard",
  "serde",
@@ -337,12 +338,39 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "codespan"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3362992a0d9f1dd7c3d0e89e0ab2bb540b7a95fea8cd798090e758fda2899b5e"
+dependencies = [
+ "codespan-reporting",
+ "serde",
+]
+
+[[package]]
+name = "codespan-reporting"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3538270d33cc669650c4b093848450d380def10c331d38c768e34cac80576e6e"
+dependencies = [
+ "serde",
+ "termcolor",
+ "unicode-width",
+]
+
 [[package]]
 name = "constant_time_eq"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc"
 
+[[package]]
+name = "convert_case"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6245d59a3e82a7fc217c5828a6692dbc6dfb63a0c8c90495621f7b9d79704a0e"
+
 [[package]]
 name = "core-foundation"
 version = "0.9.1"
@@ -398,6 +426,33 @@ dependencies = [
  "subtle",
 ]
 
+[[package]]
+name = "cssparser"
+version = "0.27.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "754b69d351cdc2d8ee09ae203db831e005560fc6030da058f86ad60c92a9cb0a"
+dependencies = [
+ "cssparser-macros",
+ "dtoa-short",
+ "itoa",
+ "matches",
+ "phf 0.8.0",
+ "proc-macro2",
+ "quote",
+ "smallvec",
+ "syn",
+]
+
+[[package]]
+name = "cssparser-macros"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dfae75de57f2b2e85e8768c3ea840fd159c8f33e2b6522c7835b7abac81be16e"
+dependencies = [
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "ctor"
 version = "0.1.20"
@@ -419,6 +474,19 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "derive_more"
+version = "0.99.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40eebddd2156ce1bb37b20bbe5151340a31828b1f2d22ba4141f3531710e38df"
+dependencies = [
+ "convert_case",
+ "proc-macro2",
+ "quote",
+ "rustc_version",
+ "syn",
+]
+
 [[package]]
 name = "digest"
 version = "0.9.0"
@@ -449,6 +517,27 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "dtoa"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56899898ce76aaf4a0f24d914c97ea6ed976d42fec6ad33fcbb0a1103e07b2b0"
+
+[[package]]
+name = "dtoa-short"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bde03329ae10e79ede66c9ce4dc930aa8599043b0743008548680f25b91502d6"
+dependencies = [
+ "dtoa",
+]
+
+[[package]]
+name = "dunce"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "453440c271cf5577fd2a40e4942540cb7d0d2f85e27c8d07dd0023c925a67541"
+
 [[package]]
 name = "either"
 version = "1.6.1"
@@ -692,6 +781,15 @@ dependencies = [
  "slab",
 ]
 
+[[package]]
+name = "fxhash"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c31b6d751ae2c7f11320402d34e41349dd1016f8d5d45e48c4312bc8625af50c"
+dependencies = [
+ "byteorder",
+]
+
 [[package]]
 name = "generic-array"
 version = "0.14.4"
@@ -1080,6 +1178,18 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "kuchiki"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ea8e9c6e031377cff82ee3001dc8026cdf431ed4e2e6b51f98ab8c73484a358"
+dependencies = [
+ "cssparser",
+ "html5ever",
+ "matches",
+ "selectors",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -1116,6 +1226,37 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "linkcheck"
+version = "0.4.1-alpha.0"
+source = "git+https://github.com/ankitects/linkcheck.git?rev=2f20798ce521cc594d510d4e417e76d5eac04d4b#2f20798ce521cc594d510d4e417e76d5eac04d4b"
+dependencies = [
+ "bytes",
+ "codespan",
+ "dunce",
+ "futures",
+ "http",
+ "kuchiki",
+ "lazy_static",
+ "linkify",
+ "log",
+ "pulldown-cmark",
+ "regex",
+ "reqwest 0.11.4",
+ "serde",
+ "thiserror",
+ "url",
+]
+
+[[package]]
+name = "linkify"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78d59d732ba6d7eeefc418aab8057dc8e3da4374bd5802ffa95bebc04b4d1dfb"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "lock_api"
 version = "0.4.4"
@@ -1482,6 +1623,15 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
+[[package]]
+name = "pest"
+version = "2.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "10f4872ae94d7b90ae48754df22fd42ad52ce740b8f370b03da4835417403e53"
+dependencies = [
+ "ucd-trie",
+]
+
 [[package]]
 name = "petgraph"
 version = "0.5.1"
@@ -1498,7 +1648,9 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3dfb61232e34fcb633f43d12c58f83c1df82962dcdfa565a4e866ffc17dafe12"
 dependencies = [
+ "phf_macros 0.8.0",
  "phf_shared 0.8.0",
+ "proc-macro-hack",
 ]
 
 [[package]]
@@ -1507,7 +1659,7 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b2ac8b67553a7ca9457ce0e526948cad581819238f4a9d1ea74545851fa24f37"
 dependencies = [
- "phf_macros",
+ "phf_macros 0.9.0",
  "phf_shared 0.9.0",
  "proc-macro-hack",
 ]
@@ -1542,6 +1694,20 @@ dependencies = [
  "rand 0.8.4",
 ]
 
+[[package]]
+name = "phf_macros"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f6fde18ff429ffc8fe78e2bf7f8b7a5a5a6e2a8b58bc5a9ac69198bbda9189c"
+dependencies = [
+ "phf_generator 0.8.0",
+ "phf_shared 0.8.0",
+ "proc-macro-hack",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "phf_macros"
 version = "0.9.0"
@@ -1973,6 +2139,40 @@ dependencies = [
  "winreg",
 ]
 
+[[package]]
+name = "reqwest"
+version = "0.11.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "246e9f61b9bb77df069a947682be06e31ac43ea37862e244a69f177694ea6d22"
+dependencies = [
+ "base64",
+ "bytes",
+ "encoding_rs",
+ "futures-core",
+ "futures-util",
+ "http",
+ "http-body",
+ "hyper",
+ "hyper-tls",
+ "ipnet",
+ "js-sys",
+ "lazy_static",
+ "log",
+ "mime",
+ "native-tls",
+ "percent-encoding",
+ "pin-project-lite",
+ "serde",
+ "serde_urlencoded",
+ "tokio",
+ "tokio-native-tls",
+ "url",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "winreg",
+]
+
 [[package]]
 name = "ring"
 version = "0.16.20"
@@ -2017,6 +2217,15 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
+[[package]]
+name = "rustc_version"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0dfe2087c51c460008730de8b57e6a320782fbfb312e1f4d520e6c6fae155ee"
+dependencies = [
+ "semver",
+]
+
 [[package]]
 name = "rustls"
 version = "0.19.1"
@@ -2097,6 +2306,44 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "selectors"
+version = "0.22.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df320f1889ac4ba6bc0cdc9c9af7af4bd64bb927bccdf32d81140dc1f9be12fe"
+dependencies = [
+ "bitflags",
+ "cssparser",
+ "derive_more",
+ "fxhash",
+ "log",
+ "matches",
+ "phf 0.8.0",
+ "phf_codegen",
+ "precomputed-hash",
+ "servo_arc",
+ "smallvec",
+ "thin-slice",
+]
+
+[[package]]
+name = "semver"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f301af10236f6df4160f7c3f04eec6dbc70ace82d23326abad5edee88801c6b6"
+dependencies = [
+ "semver-parser",
+]
+
+[[package]]
+name = "semver-parser"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "00b0bef5b7f9e0df16536d3961cfb6e84331c065b4066afb39768d0e319411f7"
+dependencies = [
+ "pest",
+]
+
 [[package]]
 name = "serde"
 version = "1.0.126"
@@ -2183,6 +2430,16 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "servo_arc"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d98238b800e0d1576d8b6e3de32827c2d74bee68bb97748dcf5071fb53965432"
+dependencies = [
+ "nodrop",
+ "stable_deref_trait",
+]
+
 [[package]]
 name = "sha1"
 version = "0.6.0"
@@ -2422,6 +2679,12 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "thin-slice"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8eaa81235c7058867fa8c0e7314f33dcce9c215f535d1913822a2b3f5e289f3c"
+
 [[package]]
 name = "thiserror"
 version = "1.0.25"
@@ -2496,6 +2759,7 @@ dependencies = [
  "mio",
  "num_cpus",
  "pin-project-lite",
+ "tokio-macros",
  "winapi",
 ]
 
@@ -2508,6 +2772,17 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "tokio-macros"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "54473be61f4ebe4efd09cec9bd5d16fa51d70ea0192213d754d2d500457db110"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "tokio-native-tls"
 version = "0.3.0"
@@ -2611,6 +2886,12 @@ version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
 
+[[package]]
+name = "ucd-trie"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56dee185309b50d1f11bfedef0fe6d036842e3fb77413abef29f8f8d1c5d4c1c"
+
 [[package]]
 name = "unic-char-property"
 version = "0.9.0"
@@ -2763,6 +3044,7 @@ dependencies = [
  "idna",
  "matches",
  "percent-encoding",
+ "serde",
 ]
 
 [[package]]
diff --git a/rslib/Cargo.toml b/rslib/Cargo.toml
index 09b86a38d..068efb38f 100644
--- a/rslib/Cargo.toml
+++ b/rslib/Cargo.toml
@@ -18,6 +18,8 @@ prost-build = "0.7.0"
 
 [dev-dependencies]
 env_logger = "0.8.4"
+linkcheck = { git = "https://github.com/ankitects/linkcheck.git", rev = "2f20798ce521cc594d510d4e417e76d5eac04d4b" }
+tokio = { version = "*", features = ["macros"] }
 
 [dependencies]
 # pinned as any changes could invalidate sqlite indexes
diff --git a/rslib/src/lib.rs b/rslib/src/lib.rs
index bdc34c752..e3ae998c8 100644
--- a/rslib/src/lib.rs
+++ b/rslib/src/lib.rs
@@ -18,6 +18,7 @@ pub mod error;
 pub mod findreplace;
 pub mod i18n;
 pub mod latex;
+pub mod links;
 pub mod log;
 mod markdown;
 pub mod media;
diff --git a/rslib/src/links.rs b/rslib/src/links.rs
new file mode 100644
index 000000000..872b7f885
--- /dev/null
+++ b/rslib/src/links.rs
@@ -0,0 +1,122 @@
+// Copyright: Ankitects Pty Ltd and contributors
+// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+
+use strum::{Display, EnumIter, EnumString};
+
+static HELP_SITE: &'static str = "https://docs.ankiweb.net/";
+
+#[derive(Debug, PartialEq, Clone, Copy, Display, EnumIter, EnumString)]
+pub enum HelpPage {
+    #[strum(serialize = "getting-started#note-types")]
+    Notetype,
+    #[strum(serialize = "browsing")]
+    Browsing,
+    #[strum(serialize = "browsing#find-and-replace")]
+    BrowsingFindAndReplace,
+    #[strum(serialize = "browsing#notes")]
+    BrowsingNotesMenu,
+    #[strum(serialize = "studying#keyboard-shortcuts")]
+    KeyboardShortcuts,
+    #[strum(serialize = "editing")]
+    Editing,
+    #[strum(serialize = "editing#adding-cards-and-notes")]
+    AddingCardAndNote,
+    #[strum(serialize = "editing#adding-a-note-type")]
+    AddingNotetype,
+    #[strum(serialize = "math#latex")]
+    Latex,
+    #[strum(serialize = "preferences")]
+    Preferences,
+    #[strum(serialize = "")]
+    Index,
+    #[strum(serialize = "templates/intro")]
+    Templates,
+    #[strum(serialize = "filtered-decks")]
+    FilteredDeck,
+    #[strum(serialize = "importing")]
+    Importing,
+    #[strum(serialize = "editing#customizing-fields")]
+    CustomizingFields,
+    #[strum(serialize = "deck-options")]
+    DeckOptions,
+    #[strum(serialize = "editing#features")]
+    EditingFeatures,
+}
+
+pub fn help_page_link(page: HelpPage) -> String {
+    format!("{}{}", HELP_SITE, page)
+}
+
+pub fn help_page_link_from_str(page: &str) -> String {
+    format!("{}{}", HELP_SITE, page)
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    use futures::StreamExt;
+    use itertools::Itertools;
+    use linkcheck::{
+        validation::{check_web, Context, Reason},
+        BasicContext,
+    };
+    use reqwest::Url;
+    use std::iter;
+    use strum::IntoEnumIterator;
+
+    /// Aggregates [`Outcome`]s by collecting the error messages of the invalid ones.
+    #[derive(Default)]
+    struct Outcomes(Vec<String>);
+
+    enum Outcome {
+        Valid,
+        Invalid(String),
+    }
+
+    #[tokio::test]
+    async fn check_links() {
+        let ctx = BasicContext::default();
+        let result = futures::stream::iter(HelpPage::iter())
+            .map(|page| check_page(page, &ctx))
+            .buffer_unordered(ctx.concurrency())
+            .collect::<Outcomes>()
+            .await;
+        if result.0.len() > 0 {
+            panic!(result.message());
+        }
+    }
+
+    async fn check_page(page: HelpPage, ctx: &BasicContext) -> Outcome {
+        match Url::parse(&help_page_link(page)) {
+            Ok(url) => match check_web(&url, ctx).await {
+                Ok(()) => Outcome::Valid,
+                Err(Reason::Dom) => {
+                    Outcome::Invalid(format!("'{}' not found on '{}'", page, HELP_SITE))
+                }
+                Err(Reason::Web(err)) => Outcome::Invalid(err.to_string()),
+                _ => unreachable!(),
+            },
+            Err(err) => Outcome::Invalid(err.to_string()),
+        }
+    }
+
+    impl Extend<Outcome> for Outcomes {
+        fn extend<T: IntoIterator<Item = Outcome>>(&mut self, items: T) {
+            for outcome in items {
+                match outcome {
+                    Outcome::Valid => (),
+                    Outcome::Invalid(err) => self.0.push(err),
+                }
+            }
+        }
+    }
+
+    impl Outcomes {
+        fn message(&self) -> String {
+            iter::once(&format!("{} links could not be validated:", self.0.len()))
+                .chain(self.0.iter())
+                .join("\n  - ")
+        }
+    }
+}