diff --git a/server/errors.go b/server/errors.go
index 6051a3f5..3b754383 100644
--- a/server/errors.go
+++ b/server/errors.go
@@ -42,7 +42,7 @@ var (
 	errHTTPNotFound                                  = &errHTTP{40401, http.StatusNotFound, "page not found", ""}
 	errHTTPUnauthorized                              = &errHTTP{40101, http.StatusUnauthorized, "unauthorized", "https://ntfy.sh/docs/publish/#authentication"}
 	errHTTPForbidden                                 = &errHTTP{40301, http.StatusForbidden, "forbidden", "https://ntfy.sh/docs/publish/#authentication"}
-	errHTTPEntityTooLargeAttachmentTooLarge          = &errHTTP{41301, http.StatusRequestEntityTooLarge, "attachment too large, or bandwidth limit reached", ""}
+	errHTTPEntityTooLargeAttachmentTooLarge          = &errHTTP{41301, http.StatusRequestEntityTooLarge, "attachment too large, or bandwidth limit reached", "https://ntfy.sh/docs/publish/#limitations"}
 	errHTTPTooManyRequestsLimitRequests              = &errHTTP{42901, http.StatusTooManyRequests, "limit reached: too many requests, please be nice", "https://ntfy.sh/docs/publish/#limitations"}
 	errHTTPTooManyRequestsLimitEmails                = &errHTTP{42902, http.StatusTooManyRequests, "limit reached: too many emails, please be nice", "https://ntfy.sh/docs/publish/#limitations"}
 	errHTTPTooManyRequestsLimitSubscriptions         = &errHTTP{42903, http.StatusTooManyRequests, "limit reached: too many active subscriptions, please be nice", "https://ntfy.sh/docs/publish/#limitations"}
diff --git a/server/server_test.go b/server/server_test.go
index ff1a9000..c0b41c03 100644
--- a/server/server_test.go
+++ b/server/server_test.go
@@ -1024,9 +1024,9 @@ func TestServer_PublishAttachmentTooLargeContentLength(t *testing.T) {
 		"Content-Length": "20000000",
 	})
 	err := toHTTPError(t, response.Body.String())
-	require.Equal(t, 400, response.Code)
-	require.Equal(t, 400, err.HTTPCode)
-	require.Equal(t, 40012, err.Code)
+	require.Equal(t, 413, response.Code)
+	require.Equal(t, 413, err.HTTPCode)
+	require.Equal(t, 41301, err.Code)
 }
 
 func TestServer_PublishAttachmentTooLargeBodyAttachmentFileSizeLimit(t *testing.T) {
@@ -1036,9 +1036,9 @@ func TestServer_PublishAttachmentTooLargeBodyAttachmentFileSizeLimit(t *testing.
 	s := newTestServer(t, c)
 	response := request(t, s, "PUT", "/mytopic", content, nil)
 	err := toHTTPError(t, response.Body.String())
-	require.Equal(t, 400, response.Code)
-	require.Equal(t, 400, err.HTTPCode)
-	require.Equal(t, 40012, err.Code)
+	require.Equal(t, 413, response.Code)
+	require.Equal(t, 413, err.HTTPCode)
+	require.Equal(t, 41301, err.Code)
 }
 
 func TestServer_PublishAttachmentExpiryBeforeDelivery(t *testing.T) {
@@ -1068,9 +1068,9 @@ func TestServer_PublishAttachmentTooLargeBodyVisitorAttachmentTotalSizeLimit(t *
 	content := util.RandomString(5001) // 5000+5001 > , see below
 	response = request(t, s, "PUT", "/mytopic", content, nil)
 	err := toHTTPError(t, response.Body.String())
-	require.Equal(t, 400, response.Code)
-	require.Equal(t, 400, err.HTTPCode)
-	require.Equal(t, 40012, err.Code)
+	require.Equal(t, 413, response.Code)
+	require.Equal(t, 413, err.HTTPCode)
+	require.Equal(t, 41301, err.Code)
 }
 
 func TestServer_PublishAttachmentAndPrune(t *testing.T) {
@@ -1144,8 +1144,32 @@ func TestServer_PublishAttachmentBandwidthLimitUploadOnly(t *testing.T) {
 	// And a failed one
 	response := request(t, s, "PUT", "/mytopic", content, nil)
 	err := toHTTPError(t, response.Body.String())
-	require.Equal(t, 400, response.Code)
-	require.Equal(t, 40012, err.Code)
+	require.Equal(t, 413, response.Code)
+	require.Equal(t, 41301, err.Code)
+}
+
+func TestServer_PublishAttachmentUserStats(t *testing.T) {
+	content := util.RandomString(4999) // > 4096
+
+	c := newTestConfig(t)
+	c.AttachmentFileSizeLimit = 5000
+	c.VisitorAttachmentTotalSizeLimit = 6000
+	s := newTestServer(t, c)
+
+	// Upload one attachment
+	response := request(t, s, "PUT", "/mytopic", content, nil)
+	msg := toMessage(t, response.Body.String())
+	require.Contains(t, msg.Attachment.URL, "http://127.0.0.1:12345/file/")
+
+	// User stats
+	response = request(t, s, "GET", "/user/stats", "", nil)
+	require.Equal(t, 200, response.Code)
+	var stats visitorStats
+	require.Nil(t, json.NewDecoder(strings.NewReader(response.Body.String())).Decode(&stats))
+	require.Equal(t, int64(5000), stats.AttachmentFileSizeLimit)
+	require.Equal(t, int64(6000), stats.VisitorAttachmentBytesTotal)
+	require.Equal(t, int64(4999), stats.VisitorAttachmentBytesUsed)
+	require.Equal(t, int64(1001), stats.VisitorAttachmentBytesRemaining)
 }
 
 func newTestConfig(t *testing.T) *Config {
diff --git a/util/limit.go b/util/limit.go
index 36d8f66f..8df768ad 100644
--- a/util/limit.go
+++ b/util/limit.go
@@ -15,10 +15,6 @@ var ErrLimitReached = errors.New("limit reached")
 type Limiter interface {
 	// Allow adds n to the limiters internal value, or returns ErrLimitReached if the limit has been reached
 	Allow(n int64) error
-
-	// Remaining returns the remaining count until the limit is reached; may return -1 if the implementation
-	// does not support this operation.
-	Remaining() int64
 }
 
 // FixedLimiter is a helper that allows adding values up to a well-defined limit. Once the limit is reached
@@ -48,13 +44,6 @@ func (l *FixedLimiter) Allow(n int64) error {
 	return nil
 }
 
-// Remaining  returns the remaining count until the limit is reached
-func (l *FixedLimiter) Remaining() int64 {
-	l.mu.Lock()
-	defer l.mu.Unlock()
-	return l.limit - l.value
-}
-
 // RateLimiter is a Limiter that wraps a rate.Limiter, allowing a floating time-based limit.
 type RateLimiter struct {
 	limiter *rate.Limiter
@@ -85,11 +74,6 @@ func (l *RateLimiter) Allow(n int64) error {
 	return nil
 }
 
-// Remaining is not implemented for RateLimiter. It always returns -1.
-func (l *RateLimiter) Remaining() int64 {
-	return -1
-}
-
 // LimitWriter implements an io.Writer that will pass through all Write calls to the underlying
 // writer w until any of the limiter's limit is reached, at which point a Write will return ErrLimitReached.
 // Each limiter's value is increased with every write.
diff --git a/web/src/app/Api.js b/web/src/app/Api.js
index 73a6dde9..e35b3d10 100644
--- a/web/src/app/Api.js
+++ b/web/src/app/Api.js
@@ -51,6 +51,13 @@ class Api {
         console.log(`[Api] Publishing message to ${url}`);
         const send = new Promise(function (resolve, reject) {
             xhr.open("PUT", url);
+            if (body.type) {
+                xhr.overrideMimeType(body.type);
+            }
+            for (const [key, value] of Object.entries(headers)) {
+                xhr.setRequestHeader(key, value);
+            }
+            xhr.upload.addEventListener("progress", onProgress);
             xhr.addEventListener('readystatechange', (ev) => {
                 if (xhr.readyState === 4 && xhr.status >= 200 && xhr.status <= 299) {
                     console.log(`[Api] Publish successful (HTTP ${xhr.status})`, xhr.response);
@@ -70,13 +77,6 @@ class Api {
                     reject(errorText ?? "An error occurred");
                 }
             })
-            xhr.upload.addEventListener("progress", onProgress);
-            if (body.type) {
-                xhr.overrideMimeType(body.type);
-            }
-            for (const [key, value] of Object.entries(headers)) {
-                xhr.setRequestHeader(key, value);
-            }
             xhr.send(body);
         });
         send.abort = () => {