diff --git a/packages/mindplot/cypress/support/commands.js b/packages/mindplot/cypress/support/commands.js
index bcb624c8..85cef3a6 100644
--- a/packages/mindplot/cypress/support/commands.js
+++ b/packages/mindplot/cypress/support/commands.js
@@ -3,7 +3,10 @@ import { addMatchImageSnapshotCommand } from 'cypress-image-snapshot/command';
 // make matchImageSnapshot() call the real implementation only if CYPRESS_imageSnaphots is set
 // otherwise it calls a noop
 if (Cypress.env('imageSnaphots')) {
-  addMatchImageSnapshotCommand();
+  addMatchImageSnapshotCommand({
+    failureThreshold: 0.001,
+    failureThresholdType: 'percent',
+  });
 } else {
   Cypress.Commands.add(
     'matchImageSnapshot',
diff --git a/packages/web2d/cypress/support/commands.js b/packages/web2d/cypress/support/commands.js
index cf3e92fd..77d192ad 100644
--- a/packages/web2d/cypress/support/commands.js
+++ b/packages/web2d/cypress/support/commands.js
@@ -3,7 +3,10 @@ import { addMatchImageSnapshotCommand } from 'cypress-image-snapshot/command';
 // make matchImageSnapshot() call the real implementation only if CYPRESS_imageSnaphots is set
 // otherwise it calls a noop
 if (Cypress.env('imageSnaphots')) {
-  addMatchImageSnapshotCommand();
+  addMatchImageSnapshotCommand({
+    failureThreshold: 0.001,
+    failureThresholdType: 'percent',
+  });
 } else {
   Cypress.Commands.add(
     'matchImageSnapshot',
diff --git a/packages/web2d/src/components/peer/svg/Font.js b/packages/web2d/src/components/peer/svg/Font.js
index a9ee7ca2..31ee1740 100644
--- a/packages/web2d/src/components/peer/svg/Font.js
+++ b/packages/web2d/src/components/peer/svg/Font.js
@@ -15,7 +15,7 @@
  *   See the License for the specific language governing permissions and
  *   limitations under the License.
  */
-import { $defined } from '@wisemapping/core-js';
+import { $assert, $defined } from '@wisemapping/core-js';
 
 class Font {
   constructor() {
@@ -26,7 +26,7 @@ class Font {
 
   init(args) {
     if ($defined(args.size)) {
-      this._size = parseInt(args.size, 10);
+      this._size = Number.parseInt(args.size, 10);
     }
     if ($defined(args.style)) {
       this._style = args.style;
@@ -68,7 +68,9 @@ class Font {
     return this._weight;
   }
 
-  setSize(size) {
+  setSize(value) {
+    const size = Number.parseInt(value, 10);
+    $assert(!Number.isFinite(size), 'size must be a valid integer');
     this._size = size;
   }
 
diff --git a/packages/webapp/cypress/support/commands.ts b/packages/webapp/cypress/support/commands.ts
index 5a2a7981..4f1ceb2d 100644
--- a/packages/webapp/cypress/support/commands.ts
+++ b/packages/webapp/cypress/support/commands.ts
@@ -1,12 +1,13 @@
 import { addMatchImageSnapshotCommand } from 'cypress-image-snapshot/command';
 import '@testing-library/cypress/add-commands';
 
-addMatchImageSnapshotCommand();
-
 // make matchImageSnapshot() call the real implementation only if CYPRESS_imageSnaphots is set
 // otherwise it calls a noop
 if (Cypress.env('imageSnaphots')) {
-    addMatchImageSnapshotCommand();
+    addMatchImageSnapshotCommand({
+        failureThreshold: 0.001,
+        failureThresholdType: 'percent',
+    });
 } else {
     Cypress.Commands.add(
         'matchImageSnapshot',