diff --git a/src/commands/decode.rs b/src/commands/decode.rs
new file mode 100644
index 0000000..ff5427a
--- /dev/null
+++ b/src/commands/decode.rs
@@ -0,0 +1,12 @@
+use crate::db::{ClipboardDb, SledClipboardDb};
+use std::io::{Read, Write};
+
+pub trait DecodeCommand {
+    fn decode(&self, in_: impl Read, out: impl Write, input: Option<String>);
+}
+
+impl DecodeCommand for SledClipboardDb {
+    fn decode(&self, in_: impl Read, out: impl Write, input: Option<String>) {
+        self.decode_entry(in_, out, input);
+    }
+}
diff --git a/src/commands/delete.rs b/src/commands/delete.rs
new file mode 100644
index 0000000..b147717
--- /dev/null
+++ b/src/commands/delete.rs
@@ -0,0 +1,12 @@
+use crate::db::{ClipboardDb, SledClipboardDb};
+use std::io::Read;
+
+pub trait DeleteCommand {
+    fn delete(&self, input: impl Read);
+}
+
+impl DeleteCommand for SledClipboardDb {
+    fn delete(&self, input: impl Read) {
+        self.delete_entries(input);
+    }
+}
diff --git a/src/commands/list.rs b/src/commands/list.rs
new file mode 100644
index 0000000..2f4666c
--- /dev/null
+++ b/src/commands/list.rs
@@ -0,0 +1,12 @@
+use crate::db::{ClipboardDb, SledClipboardDb};
+use std::io::Write;
+
+pub trait ListCommand {
+    fn list(&self, out: impl Write, preview_width: u32);
+}
+
+impl ListCommand for SledClipboardDb {
+    fn list(&self, out: impl Write, preview_width: u32) {
+        self.list_entries(out, preview_width);
+    }
+}
diff --git a/src/commands/mod.rs b/src/commands/mod.rs
new file mode 100644
index 0000000..0e3b925
--- /dev/null
+++ b/src/commands/mod.rs
@@ -0,0 +1,6 @@
+pub mod decode;
+pub mod delete;
+pub mod list;
+pub mod query;
+pub mod store;
+pub mod wipe;
diff --git a/src/commands/query.rs b/src/commands/query.rs
new file mode 100644
index 0000000..078b1e3
--- /dev/null
+++ b/src/commands/query.rs
@@ -0,0 +1,11 @@
+use crate::db::{ClipboardDb, SledClipboardDb};
+
+pub trait QueryCommand {
+    fn query_delete(&self, query: &str);
+}
+
+impl QueryCommand for SledClipboardDb {
+    fn query_delete(&self, query: &str) {
+        <SledClipboardDb as ClipboardDb>::delete_query(self, query);
+    }
+}
diff --git a/src/commands/store.rs b/src/commands/store.rs
new file mode 100644
index 0000000..858c084
--- /dev/null
+++ b/src/commands/store.rs
@@ -0,0 +1,31 @@
+use crate::db::{ClipboardDb, SledClipboardDb};
+use std::io::Read;
+
+pub trait StoreCommand {
+    fn store(
+        &self,
+        input: impl Read,
+        max_dedupe_search: u64,
+        max_items: u64,
+        state: Option<String>,
+    );
+}
+
+impl StoreCommand for SledClipboardDb {
+    fn store(
+        &self,
+        input: impl Read,
+        max_dedupe_search: u64,
+        max_items: u64,
+        state: Option<String>,
+    ) {
+        match state.as_deref() {
+            Some("sensitive") | Some("clear") => {
+                self.delete_last();
+            }
+            _ => {
+                self.store_entry(input, max_dedupe_search, max_items);
+            }
+        }
+    }
+}
diff --git a/src/commands/wipe.rs b/src/commands/wipe.rs
new file mode 100644
index 0000000..ad05377
--- /dev/null
+++ b/src/commands/wipe.rs
@@ -0,0 +1,11 @@
+use crate::db::{ClipboardDb, SledClipboardDb};
+
+pub trait WipeCommand {
+    fn wipe(&self);
+}
+
+impl WipeCommand for SledClipboardDb {
+    fn wipe(&self) {
+        self.wipe_db();
+    }
+}
diff --git a/src/db/mod.rs b/src/db/mod.rs
new file mode 100644
index 0000000..70ea7f4
--- /dev/null
+++ b/src/db/mod.rs
@@ -0,0 +1,235 @@
+use std::fmt;
+use std::io::{BufRead, BufReader, Read, Write};
+use std::str;
+
+use image::{GenericImageView, ImageFormat};
+use rmp_serde::{decode::from_read, encode::to_vec};
+use serde::{Deserialize, Serialize};
+use sled::{Db, IVec};
+
+pub trait ClipboardDb {
+    fn store_entry(&self, input: impl Read, max_dedupe_search: u64, max_items: u64);
+    fn deduplicate(&self, buf: &[u8], max: u64);
+    fn trim_db(&self, max: u64);
+    fn delete_last(&self);
+    fn wipe_db(&self);
+    fn list_entries(&self, out: impl Write, preview_width: u32);
+    fn decode_entry(&self, in_: impl Read, out: impl Write, input: Option<String>);
+    fn delete_query(&self, query: &str);
+    fn delete_entries(&self, in_: impl Read);
+    fn next_sequence(&self) -> u64;
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct Entry {
+    pub contents: Vec<u8>,
+    pub mime: Option<String>,
+}
+
+impl fmt::Display for Entry {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        let preview = preview_entry(&self.contents, self.mime.as_deref(), 100);
+        write!(f, "{preview}")
+    }
+}
+
+pub struct SledClipboardDb {
+    pub db: Db,
+}
+
+impl ClipboardDb for SledClipboardDb {
+    fn store_entry(&self, mut input: impl Read, max_dedupe_search: u64, max_items: u64) {
+        let mut buf = Vec::new();
+        if input.read_to_end(&mut buf).is_err() || buf.is_empty() || buf.len() > 5 * 1_000_000 {
+            return;
+        }
+        if buf.iter().all(|b| b.is_ascii_whitespace()) {
+            return;
+        }
+
+        let mime = detect_mime(&buf);
+
+        self.deduplicate(&buf, max_dedupe_search);
+
+        let entry = Entry {
+            contents: buf.clone(),
+            mime,
+        };
+
+        let id = self.next_sequence();
+        let enc = to_vec(&entry).unwrap();
+
+        self.db.insert(u64_to_ivec(id), enc).unwrap();
+        self.trim_db(max_items);
+    }
+
+    fn deduplicate(&self, buf: &[u8], max: u64) {
+        let mut count = 0;
+        for item in self.db.iter().rev().take(max as usize) {
+            let (k, v) = item.unwrap();
+            let entry: Entry = from_read(v.as_ref()).unwrap();
+            if entry.contents == buf {
+                self.db.remove(k).unwrap();
+            }
+            count += 1;
+            if count >= max {
+                break;
+            }
+        }
+    }
+
+    fn trim_db(&self, max: u64) {
+        let mut keys: Vec<_> = self.db.iter().rev().map(|kv| kv.unwrap().0).collect();
+        if keys.len() as u64 > max {
+            for k in keys.drain((max as usize)..) {
+                self.db.remove(k).unwrap();
+            }
+        }
+    }
+
+    fn delete_last(&self) {
+        if let Some((k, _)) = self.db.iter().next_back().and_then(Result::ok) {
+            self.db.remove(k).unwrap();
+        }
+    }
+
+    fn wipe_db(&self) {
+        self.db.clear().unwrap();
+    }
+
+    fn list_entries(&self, mut out: impl Write, preview_width: u32) {
+        for (k, v) in self.db.iter().rev().filter_map(Result::ok) {
+            let id = ivec_to_u64(&k);
+            let entry: Entry = from_read(v.as_ref()).unwrap();
+            let preview = preview_entry(&entry.contents, entry.mime.as_deref(), preview_width);
+            writeln!(out, "{id}\t{preview}").unwrap();
+        }
+    }
+
+    fn decode_entry(&self, mut in_: impl Read, mut out: impl Write, input: Option<String>) {
+        let s = if let Some(input) = input {
+            input
+        } else {
+            let mut buf = String::new();
+            in_.read_to_string(&mut buf).unwrap();
+            buf
+        };
+
+        let id = extract_id(&s).unwrap();
+        let v = self.db.get(u64_to_ivec(id)).unwrap().unwrap();
+        let entry: Entry = from_read(v.as_ref()).unwrap();
+        out.write_all(&entry.contents).unwrap();
+    }
+
+    fn delete_query(&self, query: &str) {
+        for (k, v) in self.db.iter().filter_map(Result::ok) {
+            let entry: Entry = from_read(v.as_ref()).unwrap();
+            if entry
+                .contents
+                .windows(query.len())
+                .any(|w| w == query.as_bytes())
+            {
+                self.db.remove(k).unwrap();
+            }
+        }
+    }
+
+    fn delete_entries(&self, in_: impl Read) {
+        let reader = BufReader::new(in_);
+        for line in reader.lines().map_while(Result::ok) {
+            if let Ok(id) = extract_id(&line) {
+                self.db.remove(u64_to_ivec(id)).unwrap();
+            }
+        }
+    }
+
+    fn next_sequence(&self) -> u64 {
+        let last = self
+            .db
+            .iter()
+            .next_back()
+            .and_then(|r| r.ok())
+            .map(|(k, _)| ivec_to_u64(&k));
+        last.unwrap_or(0) + 1
+    }
+}
+
+// Helper functions
+pub fn extract_id(input: &str) -> Result<u64, &'static str> {
+    let id_str = input.split('\t').next().unwrap_or("");
+    id_str.parse().map_err(|_| "invalid id")
+}
+
+pub fn u64_to_ivec(v: u64) -> IVec {
+    IVec::from(&v.to_be_bytes()[..])
+}
+
+pub fn ivec_to_u64(v: &IVec) -> u64 {
+    let arr: [u8; 8] = v.as_ref().try_into().unwrap();
+    u64::from_be_bytes(arr)
+}
+
+pub fn detect_mime(data: &[u8]) -> Option<String> {
+    if image::guess_format(data).is_ok() {
+        match image::guess_format(data) {
+            Ok(fmt) => Some(
+                match fmt {
+                    ImageFormat::Png => "image/png",
+                    ImageFormat::Jpeg => "image/jpeg",
+                    ImageFormat::Gif => "image/gif",
+                    ImageFormat::Bmp => "image/bmp",
+                    ImageFormat::Tiff => "image/tiff",
+                    _ => "application/octet-stream",
+                }
+                .to_string(),
+            ),
+            Err(_) => None,
+        }
+    } else if data.is_ascii() {
+        Some("text/plain".into())
+    } else {
+        None
+    }
+}
+
+pub fn preview_entry(data: &[u8], mime: Option<&str>, width: u32) -> String {
+    if let Some(mime) = mime {
+        if mime.starts_with("image/") {
+            if let Ok(img) = image::load_from_memory(data) {
+                let (w, h) = img.dimensions();
+                return format!(
+                    "[[ binary data {} {} {}x{} ]]",
+                    size_str(data.len()),
+                    mime,
+                    w,
+                    h
+                );
+            }
+        } else if mime == "application/json" || mime.starts_with("text/") {
+            let s = str::from_utf8(data).unwrap_or("");
+            let s = s.trim().replace(|c: char| c.is_whitespace(), " ");
+            return truncate(&s, width as usize, "…");
+        }
+    }
+    let s = String::from_utf8_lossy(data);
+    truncate(s.trim(), width as usize, "…")
+}
+
+pub fn truncate(s: &str, max: usize, ellip: &str) -> String {
+    if s.chars().count() > max {
+        s.chars().take(max).collect::<String>() + ellip
+    } else {
+        s.to_string()
+    }
+}
+
+pub fn size_str(size: usize) -> String {
+    let units = ["B", "KiB", "MiB"];
+    let mut fsize = size as f64;
+    let mut i = 0;
+    while fsize >= 1024.0 && i < units.len() - 1 {
+        fsize /= 1024.0;
+        i += 1;
+    }
+    format!("{:.0} {}", fsize, units[i])
+}
diff --git a/src/import.rs b/src/import.rs
index 903e867..1447c2b 100644
--- a/src/import.rs
+++ b/src/import.rs
@@ -1,24 +1,28 @@
-use crate::{Entry, detect_mime, u64_to_ivec};
-use rmp_serde::encode::to_vec;
-use sled::Db;
+use crate::db::{Entry, SledClipboardDb, detect_mime, u64_to_ivec};
 use std::io::{self, BufRead};
 
-pub fn import_tsv(db: &Db, input: impl io::Read) {
-    let reader = io::BufReader::new(input);
-    let mut imported = 0;
-    for line in reader.lines().map_while(Result::ok) {
-        let mut parts = line.splitn(2, '\t');
-        if let (Some(id_str), Some(val)) = (parts.next(), parts.next()) {
-            if let Ok(id) = id_str.parse::<u64>() {
-                let entry = Entry {
-                    contents: val.as_bytes().to_vec(),
-                    mime: detect_mime(val.as_bytes()),
-                };
-                let enc = to_vec(&entry).unwrap();
-                db.insert(u64_to_ivec(id), enc).unwrap();
-                imported += 1;
+pub trait ImportCommand {
+    fn import_tsv(&self, input: impl io::Read);
+}
+
+impl ImportCommand for SledClipboardDb {
+    fn import_tsv(&self, input: impl io::Read) {
+        let reader = io::BufReader::new(input);
+        let mut imported = 0;
+        for line in reader.lines().map_while(Result::ok) {
+            let mut parts = line.splitn(2, '\t');
+            if let (Some(id_str), Some(val)) = (parts.next(), parts.next()) {
+                if let Ok(id) = id_str.parse::<u64>() {
+                    let entry = Entry {
+                        contents: val.as_bytes().to_vec(),
+                        mime: detect_mime(val.as_bytes()),
+                    };
+                    let enc = rmp_serde::encode::to_vec(&entry).unwrap();
+                    self.db.insert(u64_to_ivec(id), enc).unwrap();
+                    imported += 1;
+                }
             }
         }
+        eprintln!("Imported {imported} records from TSV into sled database.");
     }
-    eprintln!("Imported {imported} records from TSV into sled database.");
 }
diff --git a/src/main.rs b/src/main.rs
index 2877354..a3c6c6b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,63 +1,82 @@
 use std::{
-    env, fmt,
-    io::{self, BufRead, BufReader, Read, Write},
+    env,
+    io::{self},
     path::PathBuf,
-    process, str,
+    process,
 };
 
 use clap::{Parser, Subcommand};
-use image::{GenericImageView, ImageFormat};
-use rmp_serde::{decode::from_read, encode::to_vec};
-use serde::{Deserialize, Serialize};
-use sled::{Db, IVec};
 
+mod commands;
+mod db;
 mod import;
 
+use crate::commands::decode::DecodeCommand;
+use crate::commands::delete::DeleteCommand;
+use crate::commands::list::ListCommand;
+use crate::commands::query::QueryCommand;
+use crate::commands::store::StoreCommand;
+use crate::commands::wipe::WipeCommand;
+use crate::import::ImportCommand;
+
 #[derive(Parser)]
 #[command(name = "stash")]
 #[command(about = "Wayland clipboard manager", version)]
 struct Cli {
     #[command(subcommand)]
     command: Option<Command>,
+
     #[arg(long, default_value_t = 750)]
     max_items: u64,
+
     #[arg(long, default_value_t = 100)]
     max_dedupe_search: u64,
+
     #[arg(long, default_value_t = 100)]
     preview_width: u32,
+
     #[arg(long)]
     db_path: Option<PathBuf>,
+
     #[arg(long)]
     import_tsv: bool,
 }
 
 #[derive(Subcommand)]
 enum Command {
+    /// Store clipboard contents
     Store,
+
+    /// List clipboard history
     List,
+
+    /// Decode and output clipboard entry by id
     Decode { input: Option<String> },
-    DeleteQuery { query: String },
-    Delete,
+
+    /// Delete clipboard entry by id (if numeric), or entries matching a query (if not).
+    /// Numeric arguments are treated as ids. Use --type to specify explicitly.
+    Delete {
+        /// Id or query string
+        arg: Option<String>,
+
+        /// Explicitly specify type: "id" or "query"
+        #[arg(long, value_parser = ["id", "query"])]
+        r#type: Option<String>,
+    },
+
+    /// Wipe all clipboard history
     Wipe,
-    Import,
-}
 
-#[derive(Serialize, Deserialize)]
-pub struct Entry {
-    pub contents: Vec<u8>,
-    pub mime: Option<String>,
-}
-
-impl fmt::Display for Entry {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        let preview = preview_entry(&self.contents, self.mime.as_deref(), 100);
-        write!(f, "{preview}")
-    }
+    /// Import clipboard data from stdin (default: TSV format)
+    Import {
+        /// Explicitly specify format: "tsv" (default)
+        #[arg(long, value_parser = ["tsv"])]
+        r#type: Option<String>,
+    },
 }
 
 fn main() {
     let cli = Cli::parse();
-
     let db_path = cli.db_path.unwrap_or_else(|| {
         dirs::cache_dir()
             .unwrap_or_else(|| PathBuf::from("/tmp"))
@@ -65,240 +84,80 @@ fn main() {
             .join("db")
     });
 
-    let db = sled::open(&db_path).unwrap_or_else(|e| {
+    let sled_db = sled::open(&db_path).unwrap_or_else(|e| {
         eprintln!("Failed to open database: {e}");
         process::exit(1);
     });
 
+    let db = db::SledClipboardDb { db: sled_db };
+
     if cli.import_tsv {
-        import::import_tsv(&db, io::stdin());
+        db.import_tsv(io::stdin());
         return;
     }
 
     match cli.command {
         Some(Command::Store) => {
-            let state = env::var("CLIPBOARD_STATE").unwrap_or_default();
-            match state.as_str() {
-                "sensitive" | "clear" => {
-                    delete_last(&db);
-                }
-                _ => {
-                    store_entry(&db, io::stdin(), cli.max_dedupe_search, cli.max_items);
+            let state = env::var("STASH_CLIPBOARD_STATE").ok();
+            db.store(io::stdin(), cli.max_dedupe_search, cli.max_items, state);
+        }
+
+        Some(Command::List) => {
+            db.list(io::stdout(), cli.preview_width);
+        }
+
+        Some(Command::Decode { input }) => {
+            db.decode(io::stdin(), io::stdout(), input);
+        }
+
+        Some(Command::Delete { arg, r#type }) => match (arg, r#type.as_deref()) {
+            (Some(s), Some("id")) => {
+                if let Ok(id) = s.parse::<u64>() {
+                    use std::io::Cursor;
+                    db.delete(Cursor::new(format!("{id}\n")));
+                } else {
+                    eprintln!("Argument is not a valid id");
                 }
             }
-        }
-        Some(Command::List) => {
-            list_entries(&db, io::stdout(), cli.preview_width);
-        }
-        Some(Command::Decode { input }) => {
-            decode_entry(&db, io::stdin(), io::stdout(), input);
-        }
-        Some(Command::DeleteQuery { query }) => {
-            delete_query(&db, &query);
-        }
-        Some(Command::Delete) => {
-            delete_entries(&db, io::stdin());
-        }
+
+            (Some(s), Some("query")) => {
+                db.query_delete(&s);
+            }
+
+            (Some(s), None) => {
+                if let Ok(id) = s.parse::<u64>() {
+                    use std::io::Cursor;
+                    db.delete(Cursor::new(format!("{id}\n")));
+                } else {
+                    db.query_delete(&s);
+                }
+            }
+
+            (None, _) => {
+                db.delete(io::stdin());
+            }
+
+            (_, Some(_)) => {
+                eprintln!("Unknown type for --type. Use \"id\" or \"query\".");
+            }
+        },
         Some(Command::Wipe) => {
-            wipe_db(&db);
+            db.wipe();
         }
-        Some(Command::Import) => {
-            eprintln!("Use --import-tsv to import TSV clipboard data");
+        Some(Command::Import { r#type }) => {
+            // Default format is TSV (Cliphist compatible)
+            let format = r#type.as_deref().unwrap_or("tsv");
+            match format {
+                "tsv" => {
+                    db.import_tsv(io::stdin());
+                }
+                _ => {
+                    eprintln!("Unsupported import format: {format}");
+                }
+            }
         }
         _ => {
             eprintln!("No subcommand provided");
         }
     }
 }
-
-fn store_entry(db: &Db, mut input: impl Read, max_dedupe_search: u64, max_items: u64) {
-    let mut buf = Vec::new();
-    if input.read_to_end(&mut buf).is_err() || buf.is_empty() || buf.len() > 5 * 1_000_000 {
-        return;
-    }
-    if buf.iter().all(|b| b.is_ascii_whitespace()) {
-        return;
-    }
-
-    let mime = detect_mime(&buf);
-
-    deduplicate(db, &buf, max_dedupe_search);
-
-    let entry = Entry {
-        contents: buf.clone(),
-        mime,
-    };
-
-    let id = next_sequence(db);
-    let enc = to_vec(&entry).unwrap();
-
-    db.insert(u64_to_ivec(id), enc).unwrap();
-    trim_db(db, max_items);
-}
-
-fn deduplicate(db: &Db, buf: &[u8], max: u64) {
-    let mut count = 0;
-    for item in db.iter().rev().take(max as usize) {
-        let (k, v) = item.unwrap();
-        let entry: Entry = from_read(v.as_ref()).unwrap();
-        if entry.contents == buf {
-            db.remove(k).unwrap();
-        }
-        count += 1;
-        if count >= max {
-            break;
-        }
-    }
-}
-
-fn trim_db(db: &Db, max: u64) {
-    let mut keys: Vec<_> = db.iter().rev().map(|kv| kv.unwrap().0).collect();
-    if keys.len() as u64 > max {
-        for k in keys.drain((max as usize)..) {
-            db.remove(k).unwrap();
-        }
-    }
-}
-
-fn delete_last(db: &Db) {
-    if let Some((k, _)) = db.iter().next_back().and_then(Result::ok) {
-        db.remove(k).unwrap();
-    }
-}
-
-fn wipe_db(db: &Db) {
-    db.clear().unwrap();
-}
-
-fn list_entries(db: &Db, mut out: impl Write, preview_width: u32) {
-    for (k, v) in db.iter().rev().filter_map(Result::ok) {
-        let id = ivec_to_u64(&k);
-        let entry: Entry = from_read(v.as_ref()).unwrap();
-        let preview = preview_entry(&entry.contents, entry.mime.as_deref(), preview_width);
-        writeln!(out, "{id}\t{preview}").unwrap();
-    }
-}
-
-fn decode_entry(db: &Db, mut in_: impl Read, mut out: impl Write, input: Option<String>) {
-    let s = if let Some(input) = input {
-        input
-    } else {
-        let mut buf = String::new();
-        in_.read_to_string(&mut buf).unwrap();
-        buf
-    };
-    let id = extract_id(&s).unwrap();
-    let v = db.get(u64_to_ivec(id)).unwrap().unwrap();
-    let entry: Entry = from_read(v.as_ref()).unwrap();
-    out.write_all(&entry.contents).unwrap();
-}
-
-fn delete_query(db: &Db, query: &str) {
-    for (k, v) in db.iter().filter_map(Result::ok) {
-        let entry: Entry = from_read(v.as_ref()).unwrap();
-        if entry
-            .contents
-            .windows(query.len())
-            .any(|w| w == query.as_bytes())
-        {
-            db.remove(k).unwrap();
-        }
-    }
-}
-
-fn delete_entries(db: &Db, in_: impl Read) {
-    let reader = BufReader::new(in_);
-    for line in reader.lines().map_while(Result::ok) {
-        if let Ok(id) = extract_id(&line) {
-            db.remove(u64_to_ivec(id)).unwrap();
-        }
-    }
-}
-
-fn extract_id(input: &str) -> Result<u64, &'static str> {
-    let id_str = input.split('\t').next().unwrap_or("");
-    id_str.parse().map_err(|_| "invalid id")
-}
-
-fn next_sequence(db: &Db) -> u64 {
-    let last = db
-        .iter()
-        .next_back()
-        .and_then(|r| r.ok())
-        .map(|(k, _)| ivec_to_u64(&k));
-    last.unwrap_or(0) + 1
-}
-
-fn u64_to_ivec(v: u64) -> IVec {
-    IVec::from(&v.to_be_bytes()[..])
-}
-
-fn ivec_to_u64(v: &IVec) -> u64 {
-    let arr: [u8; 8] = v.as_ref().try_into().unwrap();
-    u64::from_be_bytes(arr)
-}
-
-fn detect_mime(data: &[u8]) -> Option<String> {
-    if image::guess_format(data).is_ok() {
-        match image::guess_format(data) {
-            Ok(fmt) => Some(
-                match fmt {
-                    ImageFormat::Png => "image/png",
-                    ImageFormat::Jpeg => "image/jpeg",
-                    ImageFormat::Gif => "image/gif",
-                    ImageFormat::Bmp => "image/bmp",
-                    ImageFormat::Tiff => "image/tiff",
-                    _ => "application/octet-stream",
-                }
-                .to_string(),
-            ),
-            Err(_) => None,
-        }
-    } else if data.is_ascii() {
-        Some("text/plain".into())
-    } else {
-        None
-    }
-}
-
-fn preview_entry(data: &[u8], mime: Option<&str>, width: u32) -> String {
-    if let Some(mime) = mime {
-        if mime.starts_with("image/") {
-            if let Ok(img) = image::load_from_memory(data) {
-                let (w, h) = img.dimensions();
-                return format!(
-                    "[[ binary data {} {} {}x{} ]]",
-                    size_str(data.len()),
-                    mime,
-                    w,
-                    h
-                );
-            }
-        } else if mime == "application/json" || mime.starts_with("text/") {
-            let s = str::from_utf8(data).unwrap_or("");
-            let s = s.trim().replace(|c: char| c.is_whitespace(), " ");
-            return truncate(&s, width as usize, "…");
-        }
-    }
-    let s = String::from_utf8_lossy(data);
-    truncate(s.trim(), width as usize, "…")
-}
-
-fn truncate(s: &str, max: usize, ellip: &str) -> String {
-    if s.chars().count() > max {
-        s.chars().take(max).collect::<String>() + ellip
-    } else {
-        s.to_string()
-    }
-}
-
-fn size_str(size: usize) -> String {
-    let units = ["B", "KiB", "MiB"];
-    let mut fsize = size as f64;
-    let mut i = 0;
-    while fsize >= 1024.0 && i < units.len() - 1 {
-        fsize /= 1024.0;
-        i += 1;
-    }
-    format!("{:.0} {}", fsize, units[i])
-}