diff --git a/src/avdict.rs b/src/avdict.rs
index 5bb99f5..12170c4 100644
--- a/src/avdict.rs
+++ b/src/avdict.rs
@@ -6,7 +6,6 @@ use crate::gettext;
 use std::collections::HashMap;
 use std::convert::AsMut;
 use std::convert::AsRef;
-use std::convert::TryFrom;
 use std::default::Default;
 use std::ffi::CStr;
 use std::ffi::CString;
diff --git a/src/data/data.rs b/src/data/data.rs
index 1d44281..8316554 100644
--- a/src/data/data.rs
+++ b/src/data/data.rs
@@ -7,7 +7,6 @@ use crate::pixiv_link::PixivID;
 use crate::pixiv_link::ToPixivID;
 use int_enum::IntEnum;
 use json::JsonValue;
-use std::convert::TryInto;
 use xml::unescape;
 
 /// The type of the artwork
diff --git a/src/data/exif.rs b/src/data/exif.rs
index 90e3757..ca690da 100644
--- a/src/data/exif.rs
+++ b/src/data/exif.rs
@@ -8,7 +8,6 @@ use crate::ext::try_err::TryErr;
 use crate::parser::description::parse_description;
 use proc_macros::call_parent_data_source_fun;
 use proc_macros::define_exif_data_source;
-use std::convert::TryFrom;
 use std::ffi::OsStr;
 use utf16string::LittleEndian;
 use utf16string::WString;
diff --git a/src/downloader/helper.rs b/src/downloader/helper.rs
index c16574a..403de83 100644
--- a/src/downloader/helper.rs
+++ b/src/downloader/helper.rs
@@ -8,7 +8,6 @@ use crate::gettext;
 use crate::webclient::ToHeaders;
 use crate::webclient::WebClient;
 use reqwest::IntoUrl;
-use std::convert::TryFrom;
 use std::path::Path;
 use std::sync::Arc;
 use url::Url;
diff --git a/src/downloader/pd_file/version.rs b/src/downloader/pd_file/version.rs
index 23ee416..16f0ffe 100644
--- a/src/downloader/pd_file/version.rs
+++ b/src/downloader/pd_file/version.rs
@@ -3,7 +3,6 @@ use std::cmp::Ordering;
 use std::cmp::PartialEq;
 use std::cmp::PartialOrd;
 use std::convert::AsRef;
-use std::convert::TryFrom;
 use std::io::Read;
 use std::io::Write;
 
diff --git a/src/exif.rs b/src/exif.rs
index 72aff4b..2787dd0 100644
--- a/src/exif.rs
+++ b/src/exif.rs
@@ -9,7 +9,6 @@ use std::borrow::Borrow;
 use std::borrow::BorrowMut;
 use std::borrow::ToOwned;
 use std::clone::Clone;
-use std::convert::TryFrom;
 use std::ffi::CStr;
 use std::ffi::CString;
 use std::ffi::OsStr;
diff --git a/src/opt/author_name_filter.rs b/src/opt/author_name_filter.rs
index d6adf33..5498e32 100644
--- a/src/opt/author_name_filter.rs
+++ b/src/opt/author_name_filter.rs
@@ -5,7 +5,6 @@ use fancy_regex::Regex;
 use json::JsonValue;
 use std::cmp::PartialEq;
 use std::convert::From;
-use std::convert::TryFrom;
 use std::fmt::Display;
 
 #[derive(Debug, derive_more::From)]
diff --git a/src/opt/proxy.rs b/src/opt/proxy.rs
index 73c84a2..e8a9420 100644
--- a/src/opt/proxy.rs
+++ b/src/opt/proxy.rs
@@ -1,7 +1,6 @@
 use crate::ext::try_err::TryErr;
 use crate::gettext;
 use json::JsonValue;
-use std::convert::TryFrom;
 use std::fmt::Display;
 use std::ops::Deref;
 use std::ops::DerefMut;
diff --git a/src/opt/size.rs b/src/opt/size.rs
index b0dfee7..350fbde 100644
--- a/src/opt/size.rs
+++ b/src/opt/size.rs
@@ -1,5 +1,4 @@
 use json::JsonValue;
-use std::convert::TryFrom;
 
 /// Parse file size
 pub fn parse_size(obj: &JsonValue) -> Option<u64> {
diff --git a/src/opthelper.rs b/src/opthelper.rs
index 056464b..aab2f6e 100644
--- a/src/opthelper.rs
+++ b/src/opthelper.rs
@@ -19,7 +19,6 @@ use crate::server::cors::CorsEntry;
 use crate::settings::SettingStore;
 #[cfg(feature = "ugoira")]
 use crate::ugoira::X264Profile;
-use std::convert::TryFrom;
 #[cfg(feature = "server")]
 use std::net::IpAddr;
 #[cfg(feature = "server")]
diff --git a/src/opts.rs b/src/opts.rs
index 725c1dc..3a38eb0 100644
--- a/src/opts.rs
+++ b/src/opts.rs
@@ -9,7 +9,6 @@ use crate::utils::check_file_exists;
 use crate::utils::get_exe_path_else_current;
 use getopts::HasArg;
 use getopts::Options;
-use std::convert::TryFrom;
 use std::env;
 #[cfg(feature = "server")]
 use std::net::SocketAddr;
diff --git a/src/pixiv_link.rs b/src/pixiv_link.rs
index 69f92d5..323a130 100644
--- a/src/pixiv_link.rs
+++ b/src/pixiv_link.rs
@@ -2,7 +2,6 @@ use crate::ext::json::ToJson;
 use json::JsonValue;
 use regex::Regex;
 use reqwest::IntoUrl;
-use std::convert::TryInto;
 
 lazy_static! {
     #[doc(hidden)]
diff --git a/src/server/cors.rs b/src/server/cors.rs
index 8bc896b..ccd878a 100644
--- a/src/server/cors.rs
+++ b/src/server/cors.rs
@@ -6,7 +6,6 @@ use http::Uri;
 use json::JsonValue;
 use std::cmp::PartialEq;
 use std::convert::From;
-use std::convert::TryFrom;
 use std::default::Default;
 use std::fmt::Display;
 use std::net::SocketAddr;
diff --git a/src/ugoira.rs b/src/ugoira.rs
index 960d788..ed49c07 100644
--- a/src/ugoira.rs
+++ b/src/ugoira.rs
@@ -8,7 +8,6 @@ use crate::ext::rawhandle::ToRawHandle;
 use crate::ext::try_err::TryErr;
 use crate::gettext;
 use std::convert::AsRef;
-use std::convert::TryFrom;
 use std::default::Default;
 use std::ffi::CStr;
 use std::ffi::OsStr;
diff --git a/src/webclient.rs b/src/webclient.rs
index 59b058c..ee5ad57 100644
--- a/src/webclient.rs
+++ b/src/webclient.rs
@@ -9,7 +9,6 @@ use crate::opthelper::get_helper;
 use json::JsonValue;
 use reqwest::{Client, ClientBuilder, IntoUrl, RequestBuilder, Response};
 use std::collections::HashMap;
-use std::convert::TryInto;
 use std::default::Default;
 use std::sync::atomic::AtomicBool;
 use std::sync::atomic::AtomicI64;