diff --git a/@types/src/docker-args.d.ts b/@types/src/docker-args.d.ts
index 8af90ce..6e0fd4a 100644
--- a/@types/src/docker-args.d.ts
+++ b/@types/src/docker-args.d.ts
@@ -1,2 +1,3 @@
 export const DOCKER_ARGS: string[];
 export const IMAGE_NAME: "headless-fox";
+export const VOLUME_MOUNT: string;
diff --git a/@types/src/request.d.ts b/@types/src/request.d.ts
index e6c37b1..89c705d 100644
--- a/@types/src/request.d.ts
+++ b/@types/src/request.d.ts
@@ -1,12 +1,17 @@
 /// <reference types="node" />
 import { ChildProcessWithoutNullStreams } from "child_process";
+export declare type Image = {
+    url: string;
+    domain: string;
+    found_headers: Record<string, string>;
+};
 export default class ScreenshotRequest {
     url: string;
     domains: string[];
     id: string;
     status: string;
     output: string;
-    images: Record<string, unknown>[];
+    images: Image[];
     request_time: number;
     started_time: number | null;
     finished_time: number | null;
@@ -22,14 +27,16 @@ export default class ScreenshotRequest {
         id: string;
         status: string;
         output: string;
-        images: Record<string, unknown>[];
+        images: Record<string, Image[]>;
         request_time: number;
         started_time: number | null;
         finished_time: number | null;
         processing_took: number | null;
         waiting_took: number | null;
         elapsed_time_s: number;
+        zip_url: string | null;
     }>;
+    getGoodImages(): Record<string, Image[]>;
     setFinished(): void;
     exec(): Promise<void>;
 }
diff --git a/Docker/Dockerfile b/Docker/Dockerfile
index ed77327..035964e 100644
--- a/Docker/Dockerfile
+++ b/Docker/Dockerfile
@@ -46,6 +46,8 @@ RUN git clone https://github.com/muquit/grabc && cd grabc && make && make instal
 RUN apk add clang
 RUN apk add freetype-dev
 RUN python3 -m pip install --upgrade Pillow
+RUN apk add zip
+
 COPY . /opt
 CMD /opt/prepare-firefox.sh
 
diff --git a/Docker/annotate_header.py b/Docker/annotate_header.py
index 75d40c8..dd9ee66 100644
--- a/Docker/annotate_header.py
+++ b/Docker/annotate_header.py
@@ -12,9 +12,11 @@ from PIL import Image, ImageDraw, ImageFont
 
 output_file_relative = sys.argv[
     1
-]  # this is also the existing source screenshot to annotate. It will be updated in-place
+]
 
 output_file = "/opt/static/" + output_file_relative
+output_dir = os.path.dirname(output_file)
+output_suffix = os.path.basename(output_file)
 domain = sys.argv[2]
 needles = sys.argv[3:]
 
@@ -107,8 +109,9 @@ with Image.open(output_file) as im:
                 )
     if len(found_needles) == 0:
         exit(0)
+    os.remove(output_file)
     im = im.resize((im.width // 2, im.height // 2))
-    im.save(output_file, "PNG")
+    im.save(output_dir + "/" + domain.replace(".", "_") + "_" + output_suffix, "PNG")
     print(json.dumps({"new_file":
                       {"url": base_url + "/static/" + output_file_relative,
                        "domain": domain,
diff --git a/src/docker-args.js b/src/docker-args.js
index 56ef69b..130727c 100644
--- a/src/docker-args.js
+++ b/src/docker-args.js
@@ -1,12 +1,14 @@
 const IMAGE_NAME = "headless-fox";
 
+const VOLUME_MOUNT = `${process.cwd()}/static:/opt/static`;
+
 const DOCKER_ARGS = [
   "run",
   "-i",
   "-v",
-  `${process.cwd()}/static:/opt/static`,
+  VOLUME_MOUNT,
   IMAGE_NAME,
   "./script3.sh",
 ];
 
-module.exports = { DOCKER_ARGS, IMAGE_NAME };
+module.exports = { DOCKER_ARGS, IMAGE_NAME, VOLUME_MOUNT };
diff --git a/src/index.ts b/src/index.ts
index e14b316..b57049d 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -7,7 +7,7 @@ import serve from "koa-static";
 import qs from "qs";
 import { Readable } from "stream";
 import { v4 as uuid } from "uuid";
-import { DOCKER_ARGS } from "./docker-args";
+import { DOCKER_ARGS, IMAGE_NAME, VOLUME_MOUNT } from "./docker-args";
 import { requests } from "./memory";
 import ScreenshotRequest from "./request";
 
@@ -81,11 +81,11 @@ router.get("/", async (ctx) => {
           do {
             response = await (await fetch(\`/api/requests/\${id}\`)).json();
             output.innerHTML = JSON.stringify(response, null, "   ").replace(
-              /\\/static\\/.*.png/g,
+              /\\/(static|api)\\/.*(.png|all-screenshots)/g,
               '<a href="$&">$&</a>'
             );
             stdout.innerHTML = response.output.replace(
-              /\\/static\\/.*.png/g,
+              /\\/(static|api)\\/.*(.png|all-screenshots)/g,
               '<a href="$&">$&</a>'
             );
             await sleep(1000);
@@ -173,6 +173,28 @@ router.get("/api/requests/:id", async (ctx) => {
   ctx.body = await request.getJSON();
 });
 
+router.get("/api/requests/:id/all-screenshots", async (ctx) => {
+  const request = requests[ctx.params.id];
+  if (!request || request.status != "finished") {
+    ctx.status = 404;
+    return;
+  }
+  ctx.attachment(`${request.url.replace(/\W/g, "_")}_all-screenshots.zip`);
+  ctx.response.set("content-type", "application/zip");
+  const process = spawn("docker", [
+    "run",
+    "-v",
+    VOLUME_MOUNT,
+    IMAGE_NAME,
+    "zip",
+    "--recurse-paths",
+    "--junk-paths",
+    "-",
+    `/opt/static/${request.id}`,
+  ]);
+  ctx.body = process.stdout;
+});
+
 app.use(router.routes()).use(router.allowedMethods());
 const port = 3000;
 app.listen(port);
diff --git a/src/request.ts b/src/request.ts
index 13819d8..2503a9f 100644
--- a/src/request.ts
+++ b/src/request.ts
@@ -6,11 +6,17 @@ import { q, requests } from "./memory";
 
 let queue_order: ScreenshotRequest[] = [];
 
+export type Image = {
+  url: string;
+  domain: string;
+  found_headers: Record<string, string>;
+};
+
 export default class ScreenshotRequest {
   public id = uuid();
   public status = "waiting";
   public output = "";
-  public images: Record<string, unknown>[] = [];
+  public images: Image[] = [];
   public request_time: number = Date.now();
   public started_time: number | null = null;
   public finished_time: number | null = null;
@@ -47,13 +53,14 @@ export default class ScreenshotRequest {
     id: string;
     status: string;
     output: string;
-    images: Record<string, unknown>[];
+    images: Record<string, Image[]>;
     request_time: number;
     started_time: number | null;
     finished_time: number | null;
     processing_took: number | null;
     waiting_took: number | null;
     elapsed_time_s: number;
+    zip_url: string | null;
   }> {
     return {
       url: this.url,
@@ -62,7 +69,7 @@ export default class ScreenshotRequest {
       id: this.id,
       status: this.status,
       output: this.output,
-      images: this.images,
+      images: this.getGoodImages(),
       request_time: this.request_time,
       started_time: this.started_time,
       finished_time: this.finished_time,
@@ -73,9 +80,66 @@ export default class ScreenshotRequest {
           this.request_time) /
           1000
       ),
+      zip_url:
+        this.status === "finished"
+          ? `/api/requests/${this.id}/all-screenshots`
+          : null,
     };
   }
 
+  getGoodImages(): Record<string, Image[]> {
+    const result: Record<string, Image[]> = {};
+    const domains = Array.from(
+      new Set(this.images.map((image) => image.domain))
+    );
+    for (const domain of domains) {
+      const images = this.images
+        .filter((image) => image.domain === domain)
+        .sort((image1, image2) => {
+          if (
+            Object.values(image1.found_headers).length >
+            Object.values(image2.found_headers).length
+          ) {
+            return -1;
+          } else if (
+            Object.values(image1.found_headers).length <
+            Object.values(image2.found_headers).length
+          ) {
+            return 1;
+          } else {
+            return 0;
+          }
+        });
+      const all_values = Array.from(
+        new Set(
+          images
+            .map((image) => Object.values(image.found_headers))
+            .reduce((a, b) => a.concat(b))
+        )
+      );
+      const images_to_show = [];
+      const shown_values = new Set();
+      for (const image of images) {
+        const values_in_image = Object.values(image.found_headers);
+        let any_new_values = false;
+        for (const value of values_in_image) {
+          if (!shown_values.has(value)) {
+            shown_values.add(value);
+            any_new_values = true;
+          }
+        }
+        if (any_new_values) {
+          images_to_show.push(image);
+        }
+        if (shown_values.size == all_values.length) {
+          break;
+        }
+      }
+      result[domain] = images_to_show;
+    }
+    return result;
+  }
+
   setFinished(): void {
     this.status = "finished";
     this.finished_time = Date.now();
@@ -122,7 +186,7 @@ export default class ScreenshotRequest {
             is(parsed, predicates.object) &&
             is(parsed.new_file, predicates.object)
           ) {
-            this.images.push(parsed.new_file);
+            this.images.push(parsed.new_file as Image);
           }
         } catch (e) {
           //noop