7 files changed, 81 insertions, 0 deletions

diff --git a/docs/guides/images/s3-image-upload/bucket-policy-editor.png b/docs/guides/images/s3-image-upload/bucket-policy-editor.png
new file mode 100644
index 00000000..d5f4427f
--- /dev/null
+++ b/docs/guides/images/s3-image-upload/bucket-policy-editor.png
diff --git a/docs/guides/images/s3-image-upload/bucket-property.png b/docs/guides/images/s3-image-upload/bucket-property.png
new file mode 100644
index 00000000..9f4dc828
--- /dev/null
+++ b/docs/guides/images/s3-image-upload/bucket-property.png
diff --git a/docs/guides/images/s3-image-upload/create-bucket.png b/docs/guides/images/s3-image-upload/create-bucket.png
new file mode 100644
index 00000000..925f0926
--- /dev/null
+++ b/docs/guides/images/s3-image-upload/create-bucket.png
diff --git a/docs/guides/images/s3-image-upload/custom-policy.png b/docs/guides/images/s3-image-upload/custom-policy.png
new file mode 100644
index 00000000..01c570cd
--- /dev/null
+++ b/docs/guides/images/s3-image-upload/custom-policy.png
diff --git a/docs/guides/images/s3-image-upload/iam-user.png b/docs/guides/images/s3-image-upload/iam-user.png
new file mode 100644
index 00000000..b26be122
--- /dev/null
+++ b/docs/guides/images/s3-image-upload/iam-user.png
diff --git a/docs/guides/images/s3-image-upload/review-policy.png b/docs/guides/images/s3-image-upload/review-policy.png
new file mode 100644
index 00000000..7173788a
--- /dev/null
+++ b/docs/guides/images/s3-image-upload/review-policy.png
diff --git a/docs/guides/s3-image-upload.md b/docs/guides/s3-image-upload.md
new file mode 100644
index 00000000..3d6259b9
--- /dev/null
+++ b/docs/guides/s3-image-upload.md
@@ -0,0 +1,81 @@
+# Guide - Setup HackMD S3 image upload
+
+1. Go to [AWS S3 console](https://console.aws.amazon.com/s3/home) and create a new bucket.
+
+    ![create-bucket](images/s3-image-upload/create-bucket.png)
+
+2. Click on bucket, select **Properties**  on the side panel, and find **Permission** section. Click **Edit bucket policy**.
+
+    ![bucket-property](images/s3-image-upload/bucket-property.png)
+
+3. Enter the following policy, replace `bucket_name` with your bucket name:
+
+    ![bucket-policy-editor](images/s3-image-upload/bucket-policy-editor.png)
+
+    ```json
+    {
+        "Version": "2012-10-17",
+        "Statement": [
+            {
+                "Effect": "Allow",
+                "Principal": "*",
+                "Action": "s3:GetObject",
+                "Resource": "arn:aws:s3:::bucket_name/uploads/*"
+            }
+        ]
+    }
+    ```
+
+4. Go to IAM console and create a new IAM user. Remember your user credentials(`key`/`access token`)
+
+5. Enter user page, select **Permission** tab, look at **Inline Policies** section, and click **Create User Policy**
+
+    ![iam-user](images/s3-image-upload/iam-user.png)
+
+6. Select **Custom Policy**
+
+    ![custom-policy](images/s3-image-upload/custom-policy.png)
+
+7. Enter the following policy, replace `bucket_name` with your bucket name:
+
+    ![review-policy](images/s3-image-upload/review-policy.png)
+
+    ```json
+    {
+        "Version": "2012-10-17",
+        "Statement": [
+            {
+                "Effect": "Allow",
+                "Action": [
+                    "s3:*"
+                ],
+                "Resource": [
+                    "arn:aws:s3:::bucket_name/uploads/*"
+                ]
+            }
+        ]
+    }
+    ```
+
+8. Edit `config.json` and set following keys:
+
+    ```javascript
+    {
+        "production": {
+            ...
+            "imageUploadType": "s3",
+            "s3": {
+                "accessKeyId": "YOUR_S3_ACCESS_KEY_ID",
+                "secretAccessKey": "YOUR_S3_ACCESS_KEY",
+                "region": "YOUR_S3_REGION", // example: ap-northeast-1
+                "bucket": "YOUR_S3_BUCKET_NAME"
+            }
+        }
+    }
+    ```
+
+9. In additional to edit `config.json` directly, you could also try [environment variable](https://github.com/hackmdio/hackmd#environment-variables-will-overwrite-other-server-configs).
+
+## Related Tools
+
+* [AWS Policy Generator](http://awspolicygen.s3.amazonaws.com/policygen.html)