diff --git a/README.md b/README.md
index b0fba5c..911c8a0 100644
--- a/README.md
+++ b/README.md
@@ -49,6 +49,7 @@ Resize to `200x200px` using `embed` method and change format to `webp`:
 
 ### Modifiers
 
+
 | Property       | Docs                                                            | Example                                              | Comments                                                                                                                                                          |
 | -------------- | :-------------------------------------------------------------- | :--------------------------------------------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | width / w      | [Docs](https://sharp.pixelplumbing.com/api-resize#resize)       | `/width_200/buffalo.png`                             |
@@ -88,6 +89,8 @@ Config can be customized using `IPX_*` environment variables.
 
   - Default: `[]`
 
+  - e.g.: `IPX_DOMAINS=https://avatars.githubusercontent.com, https://nuxt.com`
+
 - `IPX_MAX_AGE`
 
   - Default: `300`
@@ -100,6 +103,17 @@ Config can be customized using `IPX_*` environment variables.
 
   - Default: `{}`
 
+- `IPX_LIMITS_MODIFIERS`
+
+  - Default: `['width', ' w', ' height', ' h', ' resize', ' s', ' fit', ' position', ' pos', ' trim', ' extend', ' extract', ' format', ' f', ' quality', ' q', ' rotate', ' enlarge', ' flip', ' flop', ' sharpen', ' median', ' blur', ' gamma', ' negate', ' normalize', ' threshold', ' tint', ' grayscale', ' animated']` (Abbreviated modifiers will be treated as distinct variants.)
+
+  - e.g.: `IPX_LIMITS_MODIFIERS=w, enlarge`
+
+- `IPX_LIMITS_MAX_DIMENSIONS`
+
+  - Default: `8192` (px, Both width and height will use this value.)
+
+
 ## License
 
 [MIT](./LICENSE)
diff --git a/src/ipx.ts b/src/ipx.ts
index 0c33001..f1b6ba3 100644
--- a/src/ipx.ts
+++ b/src/ipx.ts
@@ -35,6 +35,10 @@ export interface IPXOptions {
   // TODO: Create types
   // https://github.com/lovell/sharp/blob/master/lib/constructor.js#L130
   sharp?: SharpOptions;
+  limits: {
+    modifiers: Set<string>;
+    maxDimensions: number;
+  };
 }
 
 // https://sharp.pixelplumbing.com/#formats
@@ -57,6 +61,17 @@ export function createIPX(userOptions: Partial<IPXOptions>): IPX {
     fetchOptions: getEnvironment<RequestInit>("IPX_FETCH_OPTIONS", {}),
     maxAge: getEnvironment<number>("IPX_MAX_AGE", 300),
     sharp: {},
+    limits: {
+      modifiers: new Set(
+        getEnvironment<string>(
+          "IPX_LIMITS_MODIFIERS",
+          "width, w, height, h, resize, s, fit, position, pos, trim, extend, extract, format, f, quality, q, rotate, enlarge, flip, flop, sharpen, median, blur, gamma, negate, normalize, threshold, tint, grayscale, animated"
+        )
+          .split(",")
+          .map((s) => s.trim())
+      ),
+      maxDimensions: getEnvironment<number>("IPX_LIMITS_MAX_DIMENSIONS", 8192),
+    },
   };
   const options: IPXOptions = defu(userOptions, defaults) as IPXOptions;
 
@@ -155,6 +170,7 @@ export function createIPX(userOptions: Partial<IPXOptions>): IPX {
           name,
           args: arguments_,
         }))
+        .filter((h) => options.limits.modifiers.has(h.name))
         .filter((h) => h.handler)
         .sort((a, b) => {
           const aKey = (a.handler.order || a.name || "").toString();
@@ -165,6 +181,27 @@ export function createIPX(userOptions: Partial<IPXOptions>): IPX {
       // Apply handlers
       const handlerContext: any = { meta };
       for (const h of handlers) {
+        switch (h.name) {
+          case "width":
+          case "w":
+          case "height":
+          case "h":
+          case "size":
+          case "s": {
+            const [width, height] = String(h.args).split("x").map(Number);
+            if (
+              width > options.limits.maxDimensions ||
+              height > options.limits.maxDimensions
+            ) {
+              throw createError(
+                "Request dimensions exceeds the limit.",
+                416,
+                options.limits.maxDimensions.toString()
+              );
+            }
+            break;
+          }
+        }
         sharp = applyHandler(handlerContext, sharp, h.handler, h.args) || sharp;
       }