diff --git a/crates/treehouse/src/cli/generate.rs b/crates/treehouse/src/cli/generate.rs
index bdd437a..fa368d4 100644
--- a/crates/treehouse/src/cli/generate.rs
+++ b/crates/treehouse/src/cli/generate.rs
@@ -251,6 +251,8 @@ pub fn generate(paths: &Paths<'_>) -> anyhow::Result<Treehouse> {
     let mut config = Config::load(paths.config_file)?;
     config.site = std::env::var("TREEHOUSE_SITE").unwrap_or(config.site);
     config.autopopulate_emoji(&paths.static_dir.join("emoji"))?;
+    config.autopopulate_pics(&paths.static_dir.join("pic"))?;
+    dbg!(&config.pics);
 
     info!("cleaning target directory");
     let _ = std::fs::remove_dir_all(paths.target_dir);
diff --git a/crates/treehouse/src/cli/mod.rs b/crates/treehouse/src/cli/mod.rs
index a723752..5855beb 100644
--- a/crates/treehouse/src/cli/mod.rs
+++ b/crates/treehouse/src/cli/mod.rs
@@ -36,6 +36,9 @@ pub enum Command {
         #[clap(flatten)]
         serve: ServeArgs,
     },
+
+    /// Generates a new ulid and prints it to stdout.
+    Ulid,
 }
 
 #[derive(Args)]
diff --git a/crates/treehouse/src/config.rs b/crates/treehouse/src/config.rs
index f559e2c..f37a52c 100644
--- a/crates/treehouse/src/config.rs
+++ b/crates/treehouse/src/config.rs
@@ -22,6 +22,12 @@ pub struct Config {
     /// On top of this, emojis are autodiscovered by walking the `static/emoji` directory.
     #[serde(default)]
     pub emoji: HashMap<String, String>,
+
+    /// Overrides for pic filenames. Useful for setting up aliases.
+    ///
+    /// On top of this, pics are autodiscovered by walking the `static/pic` directory.
+    /// Only the part before the first dash is treated as the pic's id.
+    pub pics: HashMap<String, String>,
 }
 
 impl Config {
@@ -56,4 +62,41 @@ impl Config {
         }
         Ok(())
     }
+
+    fn is_pic_file(path: &Path) -> bool {
+        path.extension() == Some(OsStr::new("png"))
+            || path.extension() == Some(OsStr::new("svg"))
+            || path.extension() == Some(OsStr::new("jpg"))
+            || path.extension() == Some(OsStr::new("jpeg"))
+            || path.extension() == Some(OsStr::new("webp"))
+    }
+
+    pub fn autopopulate_pics(&mut self, dir: &Path) -> anyhow::Result<()> {
+        for file in WalkDir::new(dir) {
+            let entry = file?;
+            if entry.file_type().is_file() && Self::is_pic_file(entry.path()) {
+                if let Some(pic_name) = entry.path().file_stem() {
+                    let pic_name = pic_name.to_string_lossy();
+
+                    let pic_id = pic_name
+                        .split_once('-')
+                        .map(|(before_dash, _after_dash)| before_dash)
+                        .unwrap_or(&pic_name);
+
+                    if !self.pics.contains_key(pic_id) {
+                        self.pics.insert(
+                            pic_id.to_owned(),
+                            entry
+                                .path()
+                                .strip_prefix(dir)
+                                .unwrap_or(entry.path())
+                                .to_string_lossy()
+                                .into_owned(),
+                        );
+                    }
+                }
+            }
+        }
+        Ok(())
+    }
 }
diff --git a/crates/treehouse/src/html/tree.rs b/crates/treehouse/src/html/tree.rs
index 82154bc..83f8a62 100644
--- a/crates/treehouse/src/html/tree.rs
+++ b/crates/treehouse/src/html/tree.rs
@@ -103,6 +103,9 @@ pub fn branch_to_html(
                                     "".into(),
                                 )
                             }),
+                        "pic" => config.pics.get(linked).map(|filename| {
+                            (format!("/static/pic/{}", &filename).into(), "".into())
+                        }),
                         _ => None,
                     })
             } else {
diff --git a/crates/treehouse/src/main.rs b/crates/treehouse/src/main.rs
index 4d58165..4c8b678 100644
--- a/crates/treehouse/src/main.rs
+++ b/crates/treehouse/src/main.rs
@@ -46,6 +46,14 @@ async fn fallible_main() -> anyhow::Result<()> {
 
         Command::Fix(fix_args) => fix_file_cli(fix_args)?,
         Command::FixAll(fix_args) => fix_all_cli(fix_args, &paths)?,
+
+        Command::Ulid => {
+            let mut rng = rand::thread_rng();
+            let ulid = ulid::Generator::new()
+                .generate_with_source(&mut rng)
+                .expect("failed to generate ulid");
+            println!("{ulid}");
+        }
     }
 
     Ok(())
diff --git a/treehouse.toml b/treehouse.toml
index 88dee30..759475e 100644
--- a/treehouse.toml
+++ b/treehouse.toml
@@ -22,3 +22,5 @@ description = "a place on the Internet I like to call home"
 "article/function_coloring" = "https://journal.stuffwithstuff.com/2015/02/01/what-color-is-your-function/"
 
 [emoji]
+
+[pics]