diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2313514..d5e76da 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ## [Unreleased]
 - SimpleLogger init error handling
 
+### Library
+- The returned error in the Result is from now on anyhow::Error and not String.
+
 ## [0.2.0] - 2022-01-23
 ### Added
 #### CLI
diff --git a/Cargo.toml b/Cargo.toml
index e22584e..e3d8c69 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,6 +19,7 @@ chrono = "0.4.19"
 base64 = "0.13.0"
 notify-rust = "4.5.5"
 clap_complete = "3.0.5"
+anyhow = "1.0.53"
 
 [dependencies.clap]
 version = "3.0.7"
diff --git a/src/api/delete_image.rs b/src/api/delete_image.rs
index bf3b45d..cfa523a 100644
--- a/src/api/delete_image.rs
+++ b/src/api/delete_image.rs
@@ -2,26 +2,24 @@ use crate::api::configuration::{api_url, ImgurHandle};
 
 use super::send_api_request;
 
-use log::error;
+use anyhow::Error as anyhow_err;
 use reqwest::Method;
-use std::process::exit;
+use std::io::{Error, ErrorKind};
 
-pub async fn delete_image(c: ImgurHandle, delete_hash: String) -> Result<String, String> {
+pub async fn delete_image(c: ImgurHandle, delete_hash: String) -> Result<String, anyhow_err> {
     let uri = api_url!(format!("image/{delete_hash}"));
-    let res = send_api_request(&c, Method::DELETE, uri, None)
-        .await
-        .unwrap_or_else(|e| {
-            error!("send api request: {e}");
-            exit(1)
-        });
+    let res = send_api_request(&c, Method::DELETE, uri, None).await?;
 
     let status = res.status();
 
     if status.is_client_error() || status.is_server_error() {
-        let body = res.text().await.map_err(|err| err.to_string())?;
-        Err(format!(
-            "server returned non-successful status code = {status}. body = {body}"
-        ))
+        let body = res.text().await.map_err(anyhow_err::new)?;
+        let err = Error::new(
+            ErrorKind::Other,
+            format!("server returned non-successful status code = {status}, body = {body}"),
+        );
+
+        Err(anyhow_err::from(err))
     } else {
         Ok("If the delete hash was correct the image was deleted!".to_string())
     }
diff --git a/src/api/get_image.rs b/src/api/get_image.rs
index b8a3240..da3d3c3 100644
--- a/src/api/get_image.rs
+++ b/src/api/get_image.rs
@@ -3,27 +3,25 @@ use crate::api::ImageInfo;
 
 use super::send_api_request;
 
-use log::error;
+use anyhow::Error as anyhow_err;
 use reqwest::Method;
-use std::process::exit;
+use std::io::{Error, ErrorKind};
 
-pub async fn get_image(c: ImgurHandle, image: &str) -> Result<ImageInfo, String> {
+pub async fn get_image(c: ImgurHandle, image: &str) -> Result<ImageInfo, anyhow_err> {
     let uri = api_url!(format!("image/{image}"));
-    let res = send_api_request(&c, Method::GET, uri, None)
-        .await
-        .unwrap_or_else(|e| {
-            error!("send api request: {e}");
-            exit(1)
-        });
+    let res = send_api_request(&c, Method::GET, uri, None).await?;
 
     let status = res.status();
 
     if status.is_client_error() || status.is_server_error() {
-        Err(format!(
-            "server returned non-successful status code = {status}."
-        ))
+        let err = Error::new(
+            ErrorKind::Other,
+            format!("server returned non-successful status code = {status}"),
+        );
+
+        Err(anyhow_err::from(err))
     } else {
-        let content: ImageInfo = res.json().await.map_err(|e| e.to_string())?;
+        let content: ImageInfo = res.json().await.map_err(anyhow_err::new)?;
         Ok(content)
     }
 }
diff --git a/src/api/rate_limit.rs b/src/api/rate_limit.rs
index e9f48f6..101cdf6 100644
--- a/src/api/rate_limit.rs
+++ b/src/api/rate_limit.rs
@@ -2,10 +2,10 @@ use crate::api::configuration::{api_url, ImgurHandle};
 
 use super::send_api_request;
 
-use log::error;
+use anyhow::Error as anyhow_err;
 use reqwest::Method;
 use serde_derive::{Deserialize, Serialize};
-use std::process::exit;
+use std::io::{Error, ErrorKind};
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct RateLimitInfo {
@@ -28,24 +28,22 @@ pub struct RateLimitData {
     pub client_remaining: i32,
 }
 
-pub async fn rate_limit(c: ImgurHandle) -> Result<RateLimitInfo, String> {
+pub async fn rate_limit(c: ImgurHandle) -> Result<RateLimitInfo, anyhow_err> {
     let uri = api_url!("credits");
-    let res = send_api_request(&c, Method::GET, uri, None)
-        .await
-        .unwrap_or_else(|e| {
-            error!("send api request: {e}");
-            exit(1)
-        });
+    let res = send_api_request(&c, Method::GET, uri, None).await?;
 
     let status = res.status();
 
     if status.is_client_error() || status.is_server_error() {
-        let body = res.text().await.map_err(|e| e.to_string())?;
-        Err(format!(
-            "server returned non-successful status code = {status}. body = {body}"
-        ))
+        let body = res.text().await.map_err(anyhow_err::new)?;
+        let err = Error::new(
+            ErrorKind::Other,
+            format!("server returned non-successful status code = {status}, body = {body}"),
+        );
+
+        Err(anyhow_err::from(err))
     } else {
-        let content: RateLimitInfo = res.json().await.map_err(|e| e.to_string())?;
+        let content: RateLimitInfo = res.json().await.map_err(anyhow_err::new)?;
         Ok(content)
     }
 }
diff --git a/src/api/send_request.rs b/src/api/send_request.rs
index 39353d5..250bc89 100644
--- a/src/api/send_request.rs
+++ b/src/api/send_request.rs
@@ -1,5 +1,6 @@
 use super::ImgurHandle;
 
+use anyhow::Error;
 use reqwest::Method;
 use std::collections::HashMap;
 
@@ -8,7 +9,7 @@ pub async fn send_api_request(
     method: Method,
     uri: String,
     form: Option<HashMap<&str, String>>,
-) -> Result<reqwest::Response, reqwest::Error> {
+) -> Result<reqwest::Response, Error> {
     let client = &config.client;
 
     let mut req = client.request(method, uri.as_str());
@@ -28,5 +29,5 @@ pub async fn send_api_request(
 
     let req = req.build()?;
 
-    client.execute(req).await
+    client.execute(req).await.map_err(Error::from)
 }
diff --git a/src/api/upload_image.rs b/src/api/upload_image.rs
index cb537a4..7f5269a 100644
--- a/src/api/upload_image.rs
+++ b/src/api/upload_image.rs
@@ -5,34 +5,33 @@ use crate::api::{
 
 use super::send_api_request;
 
-use log::error;
+use anyhow::Error as anyhow_err;
 use reqwest::Method;
-use std::{collections::HashMap, process::exit};
+use std::{
+    collections::HashMap,
+    io::{Error, ErrorKind},
+};
 
-pub async fn upload_image(c: ImgurHandle, image: &str) -> Result<ImageInfo, String> {
+pub async fn upload_image(c: ImgurHandle, image: &str) -> Result<ImageInfo, anyhow_err> {
     let mut form = HashMap::new();
 
     form.insert("image", image.to_string());
 
     let uri = api_url!("image");
-    let res = send_api_request(&c, Method::POST, uri, Some(form))
-        .await
-        .unwrap_or_else(|e| {
-            error!("send api request: {e}");
-            exit(1)
-        });
+    let res = send_api_request(&c, Method::POST, uri, Some(form)).await?;
 
     let status = res.status();
 
     if status.is_client_error() || status.is_server_error() {
-        let body = res.text().await.map_err(|e| e.to_string())?;
+        let body = res.text().await.map_err(anyhow_err::new)?;
+        let err = Error::new(
+            ErrorKind::Other,
+            format!("server returned non-successful status code = {status}, body = {body}"),
+        );
 
-        Err(format!(
-            "server returned non-successful status code = {status}. body = {body}"
-        ))
+        Err(anyhow_err::from(err))
     } else {
-        let content: ImageInfo = res.json().await.map_err(|e| e.to_string())?;
-
+        let content: ImageInfo = res.json().await.map_err(anyhow_err::new)?;
         Ok(content)
     }
 }
diff --git a/src/config/toml.rs b/src/config/toml.rs
index f1986eb..d10d269 100644
--- a/src/config/toml.rs
+++ b/src/config/toml.rs
@@ -1,5 +1,6 @@
 use super::Config;
 
+use anyhow::Error;
 use dirs::config_dir;
 use log::{error, warn};
 use std::{
@@ -10,6 +11,8 @@ use std::{
 };
 use toml::from_str;
 
+const CONFIG_DIR: &str = "/imgurs/config.toml";
+
 pub fn parse() -> Config {
     toml().unwrap_or_else(|e| {
         warn!("Parse toml config: {e}! Creating config file...");
@@ -17,7 +20,7 @@ pub fn parse() -> Config {
         let default_config = include_str!(concat!("../../config.toml"));
 
         let sys_config_dir = config_dir().unwrap();
-        let config_dir = format!("{}/imgurs/config.toml", sys_config_dir.to_string_lossy());
+        let config_dir = format!("{}{CONFIG_DIR}", sys_config_dir.to_string_lossy());
         let config_path = Path::new(&config_dir);
 
         let prefix = config_path.parent().unwrap();
@@ -31,19 +34,19 @@ pub fn parse() -> Config {
 
         toml().unwrap_or_else(|e| {
             error!("parse toml config: {e}");
-            exit(2);
+            exit(3);
         })
     })
 }
 
-fn toml() -> Result<Config, String> {
+fn toml() -> Result<Config, Error> {
     let config_dir = config_dir().unwrap();
 
-    let file_dir: String = String::from(config_dir.to_string_lossy()) + "/imgurs/config.toml";
+    let file_dir: String = String::from(config_dir.to_string_lossy()) + CONFIG_DIR;
 
-    let toml_str = read_to_string(file_dir).map_err(|err| err.to_string())?;
+    let toml_str = read_to_string(file_dir).map_err(|e| e)?;
 
-    let decode = from_str(&toml_str).map_err(|err| err.to_string())?;
+    let decode = from_str(&toml_str).map_err(|e| e)?;
 
     Ok(decode)
 }