diff --git a/README.md b/README.md
index 22e8d1b..3fb5767 100644
--- a/README.md
+++ b/README.md
@@ -43,11 +43,29 @@ A class that stores cookies.
 
 #### addCookie(cookie[, url])
 Adds a cookie to the jar.
-- `cookie` A [Cookie](#class-cookie) instance to add to the cookie jar. Alternatively this can also be a string, for example the string received from a website. In this case `url` should be specified.
+- `cookie` A [Cookie](#class-cookie) instance to add to the cookie jar. Alternatively this can also be a string, for example a serialized cookie received from a website. In this case `url` should be specified.
 - `url` The url a cookie has been received from.
 
-#### forEach(callback)
-Just a wrapper for `CookieJar.cookies.forEach(callback)`.
+#### addFromFile(file)
+Reads a cookie jar from the disk and adds the contained cookies.
+
+#### domains()
+Returns an array of the domains currently stored cookies for.
+
+#### *iterValidForRequest(domain, url)
+Returns an iterator over all cookies valid for a request to `domain` and `url`.
+
+#### *iterValid()
+Returns an iterator over all valid (non-expired) cookies.
+
+#### *iterAll()
+Returns an iterator over all cookies currently stored.
+
+#### *iter(domain)
+Returns an iterator over all cookies for a specific domain.
+
+#### deleteExpired()
+Removes all expired cookies from the jar.
 
 #### save()
 Saves the cookie jar to disk. Only non-expired cookies are saved.
diff --git a/package-lock.json b/package-lock.json
index cca04f8..afb6c75 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "node-fetch-cookies",
-  "version": "1.0.6",
+  "version": "1.1.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index ba9014e..a7cb486 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "node-fetch-cookies",
-  "version": "1.0.6",
+  "version": "1.1.0",
   "description": "node-fetch wrapper that adds support for cookie-jars",
   "main": "src/index.mjs",
   "engines": {
diff --git a/src/cookie-jar.mjs b/src/cookie-jar.mjs
index c842d2f..e990031 100644
--- a/src/cookie-jar.mjs
+++ b/src/cookie-jar.mjs
@@ -10,36 +10,63 @@ export default class CookieJar {
             throw new TypeError("First parameter is not a string!");
         if(this.file && typeof this.file !== "string")
             throw new TypeError("Second parameter is not a string!");
+        if(this.file && fs.existsSync(this.file))
+            this.addFromFile(this.file);
+        else
+            this.cookies = new Map();
         if(Array.isArray(cookies)) {
             if(!cookies.every(c => c instanceof Cookie))
                 throw new TypeError("Third parameter is not an array of cookies!");
             else
-                cookies.forEach(cookie => this.cookies.set(cookie.name, cookie));
+                cookies.forEach(cookie => this.addCookie(cookie));
         }
         else if(cookies instanceof Cookie)
-            this.cookies.set(cookies.name, cookies);
+            this.addCookie(cookies);
         else if(cookies)
             throw new TypeError("Third parameter is neither an array nor a cookie!");
-        if(this.file && this.cookies.size === 0 && this.file.length !== 0 && fs.existsSync(this.file))
-            this.cookies = new Map(JSON.parse(fs.readFileSync(this.file)).map(([k, v]) => [k, Cookie.fromObject(v)]));
     }
     addCookie(c, fromURL) {
         if(typeof c === "string")
             c = new Cookie(c, fromURL);
-        this.cookies.set(c.name, c);
+        if(!(c instanceof Cookie))
+            throw new TypeError("First parameter is neither a string nor a cookie!");
+        if(!this.cookies.get(c.domain))
+            this.cookies.set(c.domain, new Map());
+        this.cookies.get(c.domain).set(c.name, c);
     }
-    forEach(callback) {
-        this.cookies.forEach(callback);
+    addFromFile(file) {
+        JSON.parse(fs.readFileSync(this.file)).forEach(c => this.addCookie(Cookie.fromObject(c)));
+    }
+    domains() {
+        return [...this.cookies.keys()];
+    }
+    *iterValidForRequest(domain, url) {
+        for(const cookie of this.iter(domain))
+            if(cookie.isValidForRequest(url))
+                yield cookie;
+    }
+    *iterValid() {
+        for(const cookie of this.iterAll())
+            if(!cookie.hasExpired())
+                yield cookie;
+    }
+    *iterAll() {
+        for(const domain of this.domains())
+            yield* this.iter(domain);
+    }
+    *iter(domain) {
+        for(const cookie of (this.cookies.get(domain) || []).values())
+            yield cookie;
+    }
+    deleteExpired() {
+        const filteredCookies = [...this.iterValid()];
+        this.cookies = new Map();
+        filteredCookies.forEach(c => this.addCookie(c));
     }
     save() {
         if(typeof this.file !== "string")
             throw new Error("No file has been specified for this cookie jar!");
         // only save cookies that haven't expired
-        let cookiesToSave = new Map();
-        this.forEach(cookie => {
-            if(!cookie.hasExpired())
-                cookiesToSave.set(cookie.name, cookie);
-        });
-        fs.writeFileSync(this.file, JSON.stringify([...cookiesToSave]));
+        fs.writeFileSync(this.file, JSON.stringify([...this.iterValid()]));
     }
 };
diff --git a/src/cookie.mjs b/src/cookie.mjs
index 8f3b83d..bc4e31b 100644
--- a/src/cookie.mjs
+++ b/src/cookie.mjs
@@ -18,18 +18,27 @@ const validatePath = (cookiePath, requestPath) => {
     return (requestPath + "/").startsWith(cookiePath + "/");
 };
 
+const splitN = (str, sep, n) => {
+    const splitted = str.split(sep);
+    if(n < splitted.length - 1) {
+        splitted[n] = splitted.slice(n).join(sep);
+        splitted.splice(n + 1);
+    }
+    return splitted;
+};
+
 export default class Cookie {
     constructor(str, url) {
         if(typeof str !== "string")
             throw new TypeError("Input not a string");
 
         const splitted = str.split("; ");
-        [this.name, this.value] = splitted[0].split("=");
+        [this.name, this.value] = splitN(splitted[0], "=", 1);
         if(this.value.startsWith("\"") && this.value.endsWith("\""))
             this.value = this.value.slice(1, -1);
 
         for(let i = 1; i < splitted.length; i++) {
-            let [k, v] = splitted[i].split("=");
+            let [k, v] = splitN(splitted[i], "=", 1);
             k = k.toLowerCase();
             if(v) {
                 if(k === "expires") {
@@ -40,7 +49,7 @@ export default class Cookie {
                         throw new TypeError("Invalid value for Expires \"" + v + "\"!");
                 }
                 else if(k === "max-age") {
-                    const seconds = parseInt(v);
+                    const seconds = ~~+v;
                     if(seconds.toString() !== v)
                         throw new TypeError("Invalid value for Max-Age \"" + v + "\"!");
                     this.expiry = new Date();
diff --git a/src/index.mjs b/src/index.mjs
index 3eff5a1..c339f0c 100644
--- a/src/index.mjs
+++ b/src/index.mjs
@@ -1,26 +1,32 @@
 import fetch from "node-fetch";
 import CookieJar from "./cookie-jar";
 import Cookie from "./cookie";
+import urlParser from "url";
 
 async function cookieFetch(cookieJars, url, options) {
     let cookies = "";
+    const domains =
+        urlParser
+        .parse(url)
+        .hostname
+        .split(".")
+        .map((_, i, a) => a.slice(i).join("."))
+        .slice(0, -1);
+    const addValidFromJar = jar =>
+        domains
+            .map(d => [...jar.iterValidForRequest(d, url)])
+            .reduce((a, b) => [...a, ...b])
+            .forEach(c => cookies += c.serialize() + "; ");
     if(cookieJars) {
         if(Array.isArray(cookieJars) && cookieJars.every(c => c instanceof CookieJar)) {
             cookieJars.forEach(jar => {
                 if(!jar.flags.includes("r"))
                     return;
-                jar.forEach(c => {
-                    if(c.isValidForRequest(url))
-                        cookies += c.serialize() + "; ";
-                });
-            });
-        }
-        else if(cookieJars instanceof CookieJar && cookieJars.flags.includes("r")) {
-            cookieJars.forEach(c => {
-                if(c.isValidForRequest(url))
-                    cookies += c.serialize() + "; ";
+                addValidFromJar(jar);
             });
         }
+        else if(cookieJars instanceof CookieJar && cookieJars.flags.includes("r"))
+            addValidFromJar(cookieJars);
         else
             throw new TypeError("First paramter is neither a cookie jar nor an array of cookie jars!");
     }