diff --git a/Cargo.lock b/Cargo.lock
index aead4b8..8de7312 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -17,6 +17,15 @@ version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "512761e0bb2578dd7380c6baaa0f4ce03e84f95e960231d1dec8bf4d7d6e2627"
 
+[[package]]
+name = "aho-corasick"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "anstream"
 version = "0.6.15"
@@ -253,6 +262,15 @@ dependencies = [
  "miniz_oxide",
 ]
 
+[[package]]
+name = "form_urlencoded"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e13624c2627564efccf4934284bdd98cbaa14e79b0b5a141218e507b3a823456"
+dependencies = [
+ "percent-encoding",
+]
+
 [[package]]
 name = "futures-core"
 version = "0.3.30"
@@ -277,6 +295,16 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
+[[package]]
+name = "idna"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "634d9b1461af396cad843f47fdba5597a4f9e6ddd4bfb6ff5d85028c25cb12f6"
+dependencies = [
+ "unicode-bidi",
+ "unicode-normalization",
+]
+
 [[package]]
 name = "indicatif"
 version = "0.17.8"
@@ -357,10 +385,12 @@ dependencies = [
  "clap",
  "hex",
  "indicatif",
+ "regex",
  "serde",
  "serde_json",
  "tokio",
  "tokio-stream",
+ "url",
 ]
 
 [[package]]
@@ -378,6 +408,12 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "percent-encoding"
+version = "2.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.14"
@@ -414,6 +450,35 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "regex"
+version = "1.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38200e5ee88914975b69f657f0801b6f6dccafd44fd9326302a4aaeecfacb1d8"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "368758f23274712b504848e9d5a6f010445cc8b87a7cdb4d7cbee666c1288da3"
+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 = "rustc-demangle"
 version = "0.1.24"
@@ -481,6 +546,21 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "tinyvec"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "445e881f4f6d382d5f27c034e25eb92edd7c784ceab92a0937db7f2e9471b938"
+dependencies = [
+ "tinyvec_macros",
+]
+
+[[package]]
+name = "tinyvec_macros"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
+
 [[package]]
 name = "tokio"
 version = "1.40.0"
@@ -515,18 +595,44 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "unicode-bidi"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5ab17db44d7388991a428b2ee655ce0c212e862eff1768a455c58f9aad6e7893"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e91b56cd4cadaeb79bbf1a5645f6b4f8dc5bde8834ad5894a8db35fda9efa1fe"
 
+[[package]]
+name = "unicode-normalization"
+version = "0.1.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5033c97c4262335cded6d6fc3e5c18ab755e1a3dc96376350f3d8e9f009ad956"
+dependencies = [
+ "tinyvec",
+]
+
 [[package]]
 name = "unicode-width"
 version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7dd6e30e90baa6f72411720665d41d89b9a3d039dc45b8faea1ddd07f617f6af"
 
+[[package]]
+name = "url"
+version = "2.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22784dbdf76fdde8af1aeda5622b546b422b6fc585325248a2bf9f5e41e94d6c"
+dependencies = [
+ "form_urlencoded",
+ "idna",
+ "percent-encoding",
+]
+
 [[package]]
 name = "utf8parse"
 version = "0.2.2"
diff --git a/Cargo.toml b/Cargo.toml
index de5c33c..832615d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,3 +21,5 @@ async-compression = { version = "0.4.12", features = ["tokio", "gzip", "zstd", "
 indicatif = "0.17.8"
 tokio-stream = "0.1.16"
 async-stream = "0.3.5"
+regex = "1.11.0"
+url = "2.5.2"
diff --git a/src/bin/main.rs b/src/bin/main.rs
index 89cc9bd..8eeb7f5 100644
--- a/src/bin/main.rs
+++ b/src/bin/main.rs
@@ -1,17 +1,29 @@
 use async_compression::tokio::write::ZstdEncoder;
-use clap::Parser;
+use clap::{Parser, ValueEnum};
+use nostr_archive_utils::cursor::NostrCursor;
+use regex::Regex;
+use serde::Serialize;
 use std::collections::HashMap;
 use std::path::PathBuf;
 use tokio::fs::File;
 use tokio::io::AsyncWriteExt;
 use tokio_stream::StreamExt;
-use nostr_archive_utils::cursor::NostrCursor;
+use url::Url;
+
+#[derive(ValueEnum, Debug, Clone)]
+enum ArgsOperation {
+    Combine,
+    MediaReport,
+}
 
 #[derive(Parser)]
 #[command(about, version)]
 struct Args {
     #[arg(long)]
     pub dir: String,
+
+    #[arg(long)]
+    pub operation: ArgsOperation,
 }
 
 #[tokio::main]
@@ -20,7 +32,19 @@ async fn main() -> Result<(), anyhow::Error> {
 
     let dir: PathBuf = args.dir.parse()?;
     println!("Reading data from: {}", dir.to_str().unwrap());
+    match args.operation {
+        ArgsOperation::Combine => {
+            combine(dir).await?;
+        }
+        ArgsOperation::MediaReport => {
+            media_report(dir).await?;
+        }
+    }
 
+    Ok(())
+}
+
+async fn combine(dir: PathBuf) -> Result<(), anyhow::Error> {
     let out_dir = &dir.join("out");
     tokio::fs::create_dir_all(out_dir).await?;
 
@@ -41,9 +65,9 @@ async fn main() -> Result<(), anyhow::Error> {
         } else {
             event_kinds.insert(e.kind, 1);
         }
-        let json = serde_json::to_vec(&e)?;
-        fout.write(json.as_slice()).await?;
-        fout.write("\n".as_bytes()).await?;
+        let json = serde_json::to_string(&e)?;
+        fout.write_all(json.as_bytes()).await?;
+        fout.write_all(b"\n").await?;
     }
     fout.flush().await?;
 
@@ -52,6 +76,69 @@ async fn main() -> Result<(), anyhow::Error> {
     Ok(())
 }
 
+async fn media_report(dir: PathBuf) -> Result<(), anyhow::Error> {
+    let mut report = MediaReport::default();
+
+    let mut binding = NostrCursor::new(dir.clone());
+    let mut cursor = Box::pin(binding.walk());
+    let media_regex = Regex::new(
+        r"/((?:http|ftp|https|nostr|web\+nostr|magnet|lnurl[p|w]?):/?/?[\w+?.]+(?:[\p{L}\p{N}~!@#$%^&*()_\-=+\\/?.:;',]*)?[-a-z0-9+&@#/%=~()_|])/iu",
+    )?;
+    let file_exts = vec![
+        ".webp", ".jpg", ".jpeg", ".bmp", ".png", ".gif", ".webm", ".mp4", ".mov", ".mkv",
+    ];
+    let mut notes = 0u64;
+    while let Some(Ok(e)) = cursor.next().await {
+        if e.kind != 1 {
+            continue;
+        }
+
+        notes += 1;
+        for text in media_regex.split(e.content.as_str()) {
+            if let Ok(u) = Url::parse(text) {
+                let ext = match file_exts
+                    .iter()
+                    .find(|e| text.to_ascii_lowercase().ends_with(*e))
+                {
+                    Some(ext) => ext,
+                    None => continue,
+                };
+                let host = match u.host_str() {
+                    Some(host) => host,
+                    None => continue,
+                };
+                inc_map(&mut report.hosts_count, host, 1);
+                inc_map(&mut report.extensions, ext, 1);
+
+                if let Some(imeta) = e.tags.iter().find(|e| e[0] == "imeta") {
+                    if let Some(size) = imeta.iter().find(|a| a.starts_with("size")) {
+                        let size_n = size.split(" ").last().unwrap().parse::<u64>()?;
+                        inc_map(&mut report.hosts_size, host, size_n);
+                    }
+                    inc_map(&mut report.hosts_imeta, host, 1);
+                } else {
+                    inc_map(&mut report.hosts_no_imeta, host, 1);
+                }
+            }
+        }
+    }
+
+    println!("Processed {notes} notes, writing report!");
+    let mut fout = File::create(dir.join("media_report.json")).await?;
+    fout.write_all(serde_json::to_vec(&report)?.as_slice())
+        .await?;
+
+    Ok(())
+}
+
+fn inc_map(map: &mut HashMap<String, u64>, key: &str, n: u64) {
+    if let Some(v) = map.get_mut(key) {
+        *v += n;
+    } else {
+        map.insert(key.to_string(), n);
+    }
+}
+
 async fn write_csv<K, V>(dst: &PathBuf, data: &HashMap<K, V>) -> Result<(), anyhow::Error>
 where
     K: ToString,
@@ -59,8 +146,18 @@ where
 {
     let mut fout = File::create(dst).await?;
     for (k, v) in data {
-        fout.write_all(format!("\"{}\",\"{}\"\n", k.to_string(), v.to_string()).as_bytes()).await?;
+        fout.write_all(format!("\"{}\",\"{}\"\n", k.to_string(), v.to_string()).as_bytes())
+            .await?;
     }
     fout.flush().await?;
     Ok(())
 }
+
+#[derive(Serialize, Default)]
+struct MediaReport {
+    pub hosts_count: HashMap<String, u64>,
+    pub hosts_size: HashMap<String, u64>,
+    pub hosts_imeta: HashMap<String, u64>,
+    pub hosts_no_imeta: HashMap<String, u64>,
+    pub extensions: HashMap<String, u64>,
+}
diff --git a/src/cursor.rs b/src/cursor.rs
index e9b0c7e..37c4a6f 100644
--- a/src/cursor.rs
+++ b/src/cursor.rs
@@ -29,8 +29,7 @@ impl NostrCursor {
         }
     }
 
-    pub fn walk(&mut self) -> impl Stream<Item=Result<NostrEvent, anyhow::Error>> + '_
-    {
+    pub fn walk(&mut self) -> impl Stream<Item = Result<NostrEvent, anyhow::Error>> + '_ {
         try_stream! {
             let mut dir_reader = tokio::fs::read_dir(&self.dir).await?;
             while let Ok(Some(path)) = dir_reader.next_entry().await {
@@ -39,42 +38,63 @@ impl NostrCursor {
                 }
                 let path = path.path();
                 println!("Reading: {}", path.to_str().unwrap());
-                let file = self.open_file(path).await?;
+                if let Ok(file) = self.open_file(path).await {
+                    let mut file = BufReader::new(file);
+                    let mut line = Vec::new();
+                    let mut lines = 0u64;
+                    let mut duplicates = 0u64;
 
-                let mut file = BufReader::new(file);
-                let mut line = String::new();
-                while let Ok(size) = file.read_line(&mut line).await {
-                    if size == 0 {
-                        break;
-                    }
+                    loop {
+                        match file.read_until(10, &mut line).await {
+                            Ok(size) => {
+                                if size == 0 {
+                                    println!("EOF. lines={lines}, duplicates={duplicates}");
+                                    break;
+                                }
+                                lines += 1;
 
-                    if let Ok(event) = serde_json::from_str::<NostrEvent>(&line[..size]) {
-                        let ev_id = EventId(hex::decode(&event.id)?.as_slice().try_into()?);
-                        if self.ids.insert(ev_id) {
-                            yield event
+                                let line_json = &line[..size];
+                                match serde_json::from_slice::<NostrEvent>(line_json) {
+                                    Ok(event) => {
+                                        let ev_id = EventId(hex::decode(&event.id)?.as_slice().try_into()?);
+                                        if self.ids.insert(ev_id) {
+                                            yield event
+                                        } else {
+                                            duplicates += 1;
+                                        }
+                                    },
+                                    Err(e) => {
+                                        println!("Invalid json on {} {e}", String::from_utf8_lossy(line_json))
+                                    }
+                                }
+
+                                line.clear();
+                            }
+                        Err(e) => {
+                                println!("Error reading file: {}", e);
+                                break;
+                            }
                         }
                     }
-                    line.clear();
+                } else {
+                    println!("Could not open");
                 }
             }
         }
     }
 
-    async fn open_file(&self, path: PathBuf) -> Result<Pin<Box<dyn AsyncRead>>, anyhow::Error>
-    {
+    async fn open_file(&self, path: PathBuf) -> Result<Pin<Box<dyn AsyncRead>>, anyhow::Error> {
         let f = BufReader::new(File::open(path.clone()).await?);
         match path.extension() {
-            Some(ext) => {
-                match ext.to_str().unwrap() {
-                    "json" => Ok(Box::pin(f)),
-                    "jsonl" => Ok(Box::pin(f)),
-                    "gz" => Ok(Box::pin(GzipDecoder::new(f))),
-                    "zst" => Ok(Box::pin(ZstdDecoder::new(f))),
-                    "bz2" => Ok(Box::pin(BzDecoder::new(f))),
-                    _ => anyhow::bail!("Unknown extension")
-                }
-            }
-            None => anyhow::bail!("Could not determine archive format")
+            Some(ext) => match ext.to_str().unwrap() {
+                "json" => Ok(Box::pin(f)),
+                "jsonl" => Ok(Box::pin(f)),
+                "gz" => Ok(Box::pin(GzipDecoder::new(f))),
+                "zst" => Ok(Box::pin(ZstdDecoder::new(f))),
+                "bz2" => Ok(Box::pin(BzDecoder::new(f))),
+                _ => anyhow::bail!("Unknown extension"),
+            },
+            None => anyhow::bail!("Could not determine archive format"),
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/event.rs b/src/event.rs
index ef41892..c859c2d 100644
--- a/src/event.rs
+++ b/src/event.rs
@@ -9,4 +9,4 @@ pub struct NostrEvent {
     pub sig: String,
     pub content: String,
     pub tags: Vec<Vec<String>>,
-}
\ No newline at end of file
+}
diff --git a/src/lib.rs b/src/lib.rs
index aecb31d..e14a99f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,2 +1,2 @@
+pub mod cursor;
 pub mod event;
-pub mod cursor;
\ No newline at end of file