diff --git a/.vscode/settings.json b/.vscode/settings.json
index 936ca88..4eb6d7e 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -12,6 +12,37 @@
         },
     },
     "rust-analyzer.imports.prefix": "plain",
+    "todo-tree.general.tags": [
+        "BUG",
+        "HACK",
+        "FIXME",
+        "TODO",
+        "XXX",
+        "[ ]",
+        "[x]",
+        "BOOKMARK"
+    ],
+    "todo-tree.highlights.backgroundColourScheme": [
+        "red",
+        "orange",
+        "yellow",
+        "green",
+        "blue",
+        "indigo",
+        "violet",
+        "yellow"
+    ],
+    "todo-tree.highlights.foregroundColourScheme": [
+        "white",
+        "black",
+        "black",
+        "white",
+        "white",
+        "white",
+        "black",
+        "black"
+    ],
+    "todo-tree.highlights.useColourScheme": true,
     // // override the default setting (`cargo check --all-targets`) which produces the following error
     // // "can't find crate for `test`" when the default compilation target is a no_std target
     // "rust-analyzer.checkOnSave.allTargets": false,
diff --git a/src/appstate.rs b/src/appstate.rs
index a481007..f3bcbcf 100644
--- a/src/appstate.rs
+++ b/src/appstate.rs
@@ -37,8 +37,8 @@ enum FileState {
 impl FileState {
     fn file_name(&self) -> &str {
         match self {
-            FileState::C(checked) => checked.name(),
-            FileState::U(uploading) => uploading.name(),
+            FileState::C(checked) => checked.get_name(),
+            FileState::U(uploading) => uploading.get_name(),
         }
     }
 
@@ -133,7 +133,7 @@ impl AppState {
         // Initialize or fetch the existing ProgressBar in one call:
         let bar = &*self.progress.get_or_insert_with(|| {
             // Create a new bar with style
-            let bar = ProgressBar::new(uploading.size())
+            let bar = ProgressBar::new(uploading.get_size())
                 .with_style(
                     ProgressStyle::with_template(&format!(
                         concat!(
@@ -145,8 +145,8 @@ impl AppState {
                     ))
                     .unwrap(),
                 )
-                .with_message(uploading.name().to_owned())
-                .with_position(uploading.offset());
+                .with_message(uploading.get_name().to_owned())
+                .with_position(uploading.get_offset());
 
             bar.enable_steady_tick(Duration::from_millis(100));
             bar
@@ -154,7 +154,7 @@ impl AppState {
 
         match uploading.upload_chunk(http, &self.alias, chunk_size) {
             ChunkState::Ok(upl) => {
-                bar.set_position(upl.offset());
+                bar.set_position(upl.get_offset());
                 self.files.push_front(FileState::U(upl));
                 Ok(Some(()))
             }
diff --git a/src/sharry/file/checked.rs b/src/sharry/file/checked.rs
index 2d80026..05a9180 100644
--- a/src/sharry/file/checked.rs
+++ b/src/sharry/file/checked.rs
@@ -36,14 +36,14 @@ impl FileChecked {
         alias: &Alias,
         share: &Share,
     ) -> io::Result<FileUploading> {
-        let size: usize = self.size();
+        let size = self.get_size();
 
         let res = {
             let endpoint = alias.get_endpoint(format!("alias/upload/{}/files/tus", share.id));
 
             (http.post(endpoint))
                 .sharry_header(alias)
-                .header("Sharry-File-Name", self.name())
+                .header("Sharry-File-Name", self.get_name())
                 .header("Upload-Length", size)
                 .send_empty()
                 .map_err(ureq::Error::into_io)?
@@ -69,16 +69,11 @@ impl<'t> SharryFile<'t> for FileChecked {
     /// get a reference to the file's name
     ///
     /// Uses `SharryFile::extract_file_name`, which may **panic**!
-    fn name(&'t self) -> &'t str {
+    fn get_name(&'t self) -> &'t str {
         <Self as SharryFile>::extract_file_name(&self.path)
     }
 
-    fn size<T>(&self) -> T
-    where
-        T: TryFrom<usize>,
-        <T as TryFrom<usize>>::Error: std::fmt::Debug + std::fmt::Display,
-    {
-        let val = <Self as SharryFile>::to_usize(fs::metadata(&self.path).unwrap().len());
-        <Self as SharryFile>::from_usize(val)
+    fn get_size(&self) -> u64 {
+        fs::metadata(&self.path).unwrap().len()
     }
 }
diff --git a/src/sharry/file/filetrait.rs b/src/sharry/file/filetrait.rs
index b466d58..e9a3be0 100644
--- a/src/sharry/file/filetrait.rs
+++ b/src/sharry/file/filetrait.rs
@@ -16,38 +16,7 @@ pub trait SharryFile<'t> {
             .expect("bad file name")
     }
 
-    fn from_usize<T>(val: usize) -> T
-    where
-        T: TryFrom<usize>,
-        <T as TryFrom<usize>>::Error: Debug + Display,
-    {
-        val.try_into()
-            .inspect_err(|e| panic!("usize did not fit into other type: {e}"))
-            .unwrap()
-    }
+    fn get_name(&'t self) -> &'t str;
 
-    fn to_usize<T>(val: T) -> usize
-    where
-        T: TryInto<usize>,
-        <T as TryInto<usize>>::Error: Debug + Display,
-    {
-        val.try_into()
-            .inspect_err(|e| panic!("other type did not fit into usize: {e}"))
-            .unwrap()
-    }
-
-    fn name(&'t self) -> &'t str;
-
-    fn offset<T>(&self) -> T
-    where
-        T: TryFrom<usize>,
-        <T as TryFrom<usize>>::Error: Debug + Display,
-    {
-        Self::from_usize(0)
-    }
-
-    fn size<T>(&self) -> T
-    where
-        T: TryFrom<usize>,
-        <T as TryFrom<usize>>::Error: Debug + Display;
+    fn get_size(&self) -> u64;
 }
diff --git a/src/sharry/file/uploading.rs b/src/sharry/file/uploading.rs
index d3898e2..00ba2d6 100644
--- a/src/sharry/file/uploading.rs
+++ b/src/sharry/file/uploading.rs
@@ -14,9 +14,9 @@ use super::{Alias, SharryAlias, SharryFile};
 #[derive(Serialize, Deserialize, Debug)]
 pub struct FileUploading {
     path: PathBuf,
-    size: usize,
+    size: u64,
     uri: String,
-    offset: usize,
+    offset: u64,
 }
 
 #[derive(Debug)]
@@ -46,7 +46,7 @@ impl std::fmt::Display for FileUploading {
 }
 
 impl FileUploading {
-    pub(super) fn new(path: PathBuf, size: usize, uri: String) -> Self {
+    pub(super) fn new(path: PathBuf, size: u64, uri: String) -> Self {
         Self {
             path,
             size,
@@ -55,11 +55,13 @@ impl FileUploading {
         }
     }
 
-    fn read_chunk(&self, chunk_size: usize) -> io::Result<Vec<u8>> {
-        let offset = u64::try_from(self.offset).map_err(io::Error::other)?;
+    pub fn get_offset(&self) -> u64 {
+        self.offset
+    }
 
+    fn read_chunk(&self, chunk_size: usize) -> io::Result<Vec<u8>> {
         let mut f = fs::File::open(&self.path)?;
-        f.seek(SeekFrom::Start(offset))?;
+        f.seek(SeekFrom::Start(self.offset))?;
 
         let mut bytes = vec![0; chunk_size];
         let read_len = f.read(&mut bytes)?;
@@ -93,12 +95,20 @@ impl FileUploading {
 
         let Some(Ok(Ok(res_offset))) = (res.headers().get("Upload-Offset"))
             .map(HeaderValue::to_str)
-            .map(|v| v.map(str::parse::<usize>))
+            .map(|v| v.map(str::parse::<u64>))
         else {
             return ChunkState::Err(self, UploadError::ResponseOffset);
         };
 
-        if self.offset + chunk.len() != res_offset {
+        // convert chunk.len() into an `u64`
+        //
+        // BOOKMARK this might panic on platforms where `usize` > 64 bit.
+        // Also whoa, you've sent more than 2 EiB ... in ONE chunk.
+        // Maybe just chill?
+        let chunk_len = u64::try_from(chunk.len())
+            .unwrap_or_else(|e| panic!("usize={} did not fit into u64: {}", chunk.len(), e));
+
+        if self.offset + chunk_len != res_offset {
             return ChunkState::Err(self, UploadError::ResponseOffset);
         }
 
@@ -113,23 +123,11 @@ impl FileUploading {
 }
 
 impl<'t> SharryFile<'t> for FileUploading {
-    fn name(&'t self) -> &'t str {
+    fn get_name(&'t self) -> &'t str {
         <Self as SharryFile>::extract_file_name(&self.path)
     }
 
-    fn offset<T>(&self) -> T
-    where
-        T: TryFrom<usize>,
-        <T as TryFrom<usize>>::Error: std::fmt::Debug + std::fmt::Display,
-    {
-        <Self as SharryFile>::from_usize(self.offset)
-    }
-
-    fn size<T>(&self) -> T
-    where
-        T: TryFrom<usize>,
-        <T as TryFrom<usize>>::Error: std::fmt::Debug + std::fmt::Display,
-    {
-        <Self as SharryFile>::from_usize(self.size)
+    fn get_size(&self) -> u64 {
+        self.size
     }
 }