diff --git a/content/pages/publish.json b/content/pages/publish.json
index 8da56c3a0..537aebe66 100644
--- a/content/pages/publish.json
+++ b/content/pages/publish.json
@@ -23,7 +23,7 @@
         "name": "files",
         "label": "File",
         "placeholder": "e.g. https://file.com/file.json",
-        "help": "Please provide a URL to your data set file. This URL will be stored encrypted after publishing.",
+        "help": "Please enter the URL to your data set file and click \"ADD FILE\" to validate the data. This URL will be stored encrypted after publishing.",
         "type": "files",
         "required": true
       },
@@ -31,7 +31,7 @@
         "name": "links",
         "label": "Sample file",
         "placeholder": "e.g. https://file.com/samplefile.json",
-        "help": "Please provide a URL to a sample of your data set file. This file should reveal the data structure of your data set, e.g. by including the header and one line of a CSV file. This file URL will be publicly available after publishing.",
+        "help": "Please enter the URL to a sample of your data set file and click \"ADD FILE\" to validate the data. This file should reveal the data structure of your data set, e.g. by including the header and one line of a CSV file. This file URL will be publicly available after publishing.",
         "type": "files"
       },
       {
diff --git a/src/components/atoms/Button.module.css b/src/components/atoms/Button.module.css
index 5e300945f..03746cf98 100644
--- a/src/components/atoms/Button.module.css
+++ b/src/components/atoms/Button.module.css
@@ -13,8 +13,8 @@
   border-radius: var(--border-radius);
   transition: 0.2s ease-out;
   color: var(--brand-white);
-  background: var(--brand-grey-light);
-  box-shadow: 0 9px 18px 0 rgba(0, 0, 0, 0.1);
+  background: var(--brand-pink);
+  box-shadow: 3px 3px 7px 0 rgba(0, 0, 0, 0.3);
   user-select: none;
   text-align: center;
 }
diff --git a/src/components/molecules/FormFields/FilesInput/Input.tsx b/src/components/molecules/FormFields/FilesInput/Input.tsx
index c90073fac..b75da88f3 100644
--- a/src/components/molecules/FormFields/FilesInput/Input.tsx
+++ b/src/components/molecules/FormFields/FilesInput/Input.tsx
@@ -18,7 +18,12 @@ export default function FileInput({
 
   return (
     <InputGroup>
-      <input className={styles.input} {...props} type="url" />
+      <input
+        className={styles.input}
+        {...props}
+        type="url"
+        onBlur={(e: React.SyntheticEvent) => handleButtonClick(e, field.value)}
+      />
 
       <Button
         size="small"
diff --git a/src/models/FormPublish.ts b/src/models/FormPublish.ts
index 64bd63ee1..4ba427365 100644
--- a/src/models/FormPublish.ts
+++ b/src/models/FormPublish.ts
@@ -15,7 +15,9 @@ export const validationSchema: Yup.SchemaOf<MetadataPublishForm> = Yup.object()
         symbol: Yup.string()
       })
       .required('Required'),
-    files: Yup.array<FileMetadata>().required('Required').nullable(),
+    files: Yup.array<FileMetadata>()
+      .required('Enter a valid URL and click "ADD FILE"')
+      .nullable(),
     description: Yup.string().min(10).required('Required'),
     timeout: Yup.string().required('Required'),
     access: Yup.string()
diff --git a/src/utils/provider.ts b/src/utils/provider.ts
index c2bd097c4..88185c470 100644
--- a/src/utils/provider.ts
+++ b/src/utils/provider.ts
@@ -21,8 +21,29 @@ export async function fileinfo(
       return
     }
     if (!response.data[0] || !response.data[0].valid) {
-      toast.error('Could not fetch file info. Please check URL and try again')
+      toast.error(
+        'The data file URL you entered apears to be invalid. Please check URL and try again',
+        {
+          autoClose: false,
+          hideProgressBar: false,
+          closeOnClick: true,
+          pauseOnHover: true,
+          draggable: true,
+          progress: undefined
+        }
+      )
       return
+    } else {
+      toast.dismiss() // Remove any existing error message
+      toast.success('Great! That dataset looks good 🐳', {
+        position: 'bottom-right',
+        autoClose: 5000,
+        hideProgressBar: false,
+        closeOnClick: true,
+        pauseOnHover: true,
+        draggable: true,
+        progress: undefined
+      })
     }
 
     const { contentLength, contentType } = response.data[0]