diff --git a/Cargo.lock b/Cargo.lock
index 63f503e..b93f446 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -41,15 +41,6 @@ dependencies = [
  "zerocopy",
 ]
 
-[[package]]
-name = "aho-corasick"
-version = "1.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
-dependencies = [
- "memchr",
-]
-
 [[package]]
 name = "ammonia"
 version = "4.0.0"
@@ -902,7 +893,6 @@ dependencies = [
  "markup5ever_rcdom",
  "mime",
  "rand 0.8.5",
- "regex",
  "reqwest",
  "resvg",
  "rpassword",
@@ -2089,35 +2079,6 @@ dependencies = [
  "bitflags 2.9.0",
 ]
 
-[[package]]
-name = "regex"
-version = "1.11.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191"
-dependencies = [
- "aho-corasick",
- "memchr",
- "regex-automata",
- "regex-syntax",
-]
-
-[[package]]
-name = "regex-automata"
-version = "0.4.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "809e8dc61f6de73b46c85f4c96486310fe304c434cfa43669d7b40f711150908"
-dependencies = [
- "aho-corasick",
- "memchr",
- "regex-syntax",
-]
-
-[[package]]
-name = "regex-syntax"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
-
 [[package]]
 name = "rend"
 version = "0.4.2"
diff --git a/Cargo.toml b/Cargo.toml
index beaf8e1..33d9ea3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,42 +8,47 @@ repository = "https://github.com/QuartzLibrary/glowpub"
 readme = "README.md"
 edition = "2024"
 
+[features]
+default = ["binary"]
+binary = ["epub", "dep:clap", "dep:simple_logger", "dep:slug"]
+epub = ["gen", "api", "dep:epub-builder", "dep:uuid"]
+api = ["dep:serde_json", "dep:tokio", "dep:glob", "dep:rpassword"]
+gen = ["dep:fontdb", "dep:resvg", "dep:textwrap", "dep:tiny-skia", "dep:usvg", "dep:ammonia", "dep:cssparser", "dep:html-escape", "dep:html5ever", "dep:lightningcss", "dep:lol_html", "dep:markup5ever", "dep:markup5ever_rcdom", "dep:xml5ever"]
+
 [dependencies]
-chrono = { version = "0.4", features = ["serde"] }
-glob = "0.3"
 log = "0.4"
-mime = "0.3"
 rand = "0.8"
-regex = "1"
+chrono = { version = "0.4", features = ["serde"] }
+serde = { version = "1", features = ["derive"] }
+mime = "0.3"
 sha2 = "0.10"
-uuid = { version = "1", features = ["v4"] }
-
 reqwest = { version = "0.12", features = ["json"] }
-serde = { version = "1", features = ["derive"] }
-serde_json = "1"
-tokio = { version = "1", features = ["full"] }
+image = { version = "0.25", default-features = false, features = ["bmp", "gif", "jpeg", "png", "webp"] }
 
-fontdb = "0.16"
-resvg = "0.41"
-textwrap = "0.16"
-tiny-skia = "0.11"
-usvg = "0.41"
+serde_json = { version ="1", optional = true }
+tokio = { version = "1", features = ["full"], optional = true }
+glob = { version = "0.3", optional = true }
+rpassword = { version = "7.3.1", optional = true }
 
-epub-builder = { version = "0.7", default-features = false, features = ["libzip"] }
+fontdb = { version = "0.16", optional = true }
+resvg = { version = "0.41", optional = true }
+textwrap = { version = "0.16", optional = true }
+tiny-skia = { version = "0.11", optional = true }
+usvg = { version = "0.41", optional = true }
 
-ammonia = "4"
-cssparser = "0.33"
-html-escape = "0.2"
-html5ever = "0.27"
-lightningcss = "1.0.0-alpha.55"
-lol_html = "1"
-markup5ever = "0.12"
-markup5ever_rcdom = "0.3"
-xml5ever = "0.18"
+ammonia = { version = "4", optional = true }
+cssparser = { version = "0.33", optional = true }
+html-escape = { version = "0.2", optional = true }
+html5ever = { version = "0.27", optional = true }
+lightningcss = { version = "1.0.0-alpha.55", optional = true }
+lol_html = { version = "1", optional = true }
+markup5ever = { version = "0.12", optional = true }
+markup5ever_rcdom = { version = "0.3", optional = true }
+xml5ever = { version = "0.18", optional = true }
 
-image = { version = "0.25", default-features = false, features = ["bmp", "gif", "jpeg", "png", "webp"] }
+epub-builder = { version = "0.7", default-features = false, features = ["libzip"], optional = true }
+uuid = { version = "1", features = ["v4"], optional = true }
 
-clap = { version = "4", features = ["derive"] }
-simple_logger = "4"
-slug = "0.1"
-rpassword = "7.3.1"
+clap = { version = "4", features = ["derive"], optional = true }
+simple_logger = { version = "4", optional = true }
+slug = { version = "0.1", optional = true }
diff --git a/src/cached.rs b/src/cached.rs
index 1736171..13f49cb 100644
--- a/src/cached.rs
+++ b/src/cached.rs
@@ -1,5 +1,4 @@
 use std::{
-    collections::BTreeSet,
     error::Error,
     path::{Path, PathBuf},
     str::FromStr,
@@ -18,6 +17,9 @@ use crate::{
     },
 };
 
+#[cfg(feature = "gen")]
+use std::collections::BTreeSet;
+
 const CACHE_ROOT: &str = "./cache";
 
 impl Board {
@@ -162,6 +164,7 @@ impl Thread {
 
         Ok(Ok(Self { post, replies }))
     }
+    #[cfg(feature = "gen")]
     pub async fn cache_all_icons(&self, invalidate_cache: bool) {
         let icons: BTreeSet<_> = self.icons().collect();
 
@@ -205,6 +208,8 @@ impl Continuity {
 
         Ok(Ok(Self { board, threads }))
     }
+
+    #[cfg(feature = "gen")]
     pub async fn cache_all_icons(&self, invalidate_cache: bool) {
         let icons: BTreeSet<_> = self.threads.iter().flat_map(|t| t.icons()).collect();
         for icon in icons {
diff --git a/src/generate/mod.rs b/src/generate/mod.rs
index 09b615b..d3c8769 100644
--- a/src/generate/mod.rs
+++ b/src/generate/mod.rs
@@ -1,5 +1,6 @@
-mod cover;
+pub mod cover;
 
+#[cfg(feature = "epub")]
 pub mod epub;
 pub mod html;
 pub mod transform;
diff --git a/src/lib.rs b/src/lib.rs
index 4454ec6..1935c48 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,10 +1,15 @@
 mod rfc3339;
 
+#[cfg(feature = "api")]
 mod auth;
 
+#[cfg(feature = "api")]
 pub mod api;
+#[cfg(feature = "api")]
 pub mod cached;
+#[cfg(feature = "gen")]
 pub mod generate;
+#[cfg(all(feature = "gen", feature = "api"))]
 pub mod intern_images;
 pub mod types;
 pub mod utils;
diff --git a/src/types.rs b/src/types.rs
index 5376f88..e3b25bd 100644
--- a/src/types.rs
+++ b/src/types.rs
@@ -104,15 +104,16 @@ pub struct Reply {
 }
 
 mod helpers {
-    use std::{
-        collections::{BTreeSet, HashSet},
-        iter,
-    };
-
-    use crate::generate::transform;
+    use std::collections::BTreeSet;
 
     use super::*;
 
+    #[cfg(feature = "gen")]
+    use {
+        crate::generate::transform,
+        std::{collections::HashSet, iter},
+    };
+
     // TODO: can we rely on there always being at least one thread?
     impl Continuity {
         pub fn created_at(&self) -> Option<DateTime<Utc>> {
@@ -156,6 +157,7 @@ mod helpers {
             (sections, sectionless_threads)
         }
     }
+    #[cfg(feature = "gen")]
     impl Thread {
         pub fn image_urls(&self) -> HashSet<String> {
             let contents = iter::once(&self.post.content)