diff --git a/src/models/configuration.js b/src/models/configuration.js
index 27f370c..1ba5950 100644
--- a/src/models/configuration.js
+++ b/src/models/configuration.js
@@ -99,3 +99,18 @@ export const schema = z.object({
 });
 
 /** @typedef {z.infer<typeof schema>} Configuration */
+
+export const defaultConfig = {
+  rotatePage: false,
+  paperRotation90: false,
+  cropMarks: false,
+  cutMarks: false,
+  pdfEdgeMarks: false,
+  mainForeEdgePaddingPt: 0,
+  bindingEdgePaddingPt: 0,
+  topEdgePaddingPt: 0,
+  bottomEdgePaddingPt: 0,
+  sigLength: 4, // Specific to standard
+  foreEdgePaddingPt: 0, // specific to wacky small
+  flyleafs: 1,
+};
diff --git a/src/utils/formUtils.js b/src/utils/formUtils.js
index a477b5b..dcdbbb4 100644
--- a/src/utils/formUtils.js
+++ b/src/utils/formUtils.js
@@ -2,7 +2,7 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at https://mozilla.org/MPL/2.0/.
 
-import { schema } from '../models/configuration';
+import { defaultConfig, schema } from '../models/configuration';
 import { clearLocalSettings, getLocalSettings, setLocalSettings } from './localStorageUtils';
 import { renderFormFromSettings, renderInfoBox, renderPageCount, renderWacky } from './renderUtils';
 import { clearUrlParams, setUrlParams, toUrlParams, updateWindowLocation } from './uri';
@@ -47,7 +47,8 @@ const fromFormToConfiguration = (form) =>
  * @param { import("../models/configuration").Configuration } configuration The configuration to set
  */
 const setConfigurationToUrl = (configuration) => {
-  updateWindowLocation(setUrlParams(window.location.href, configuration));
+  const cleanedConfig = removeDefaults(configuration);
+  updateWindowLocation(setUrlParams(window.location.href, cleanedConfig));
 };
 
 /**
@@ -108,3 +109,19 @@ export const resetForm = () => {
   updateWindowLocation(clearUrlParams(window.location.href));
   return loadForm();
 };
+
+/**
+ * Returns a version of the configuration with any items set to default values removed
+ * to keep url strings a little cleaner.
+ * @param { import("../models/configuration").Configuration } configuration The form to save
+ * @returns { import("../models/configuration").Configuration } The updated configuration set
+ */
+function removeDefaults(configuration) {
+  const cleaned = {};
+  Object.keys(configuration).forEach((key) => {
+    if (defaultConfig[key] != configuration[key]) {
+      cleaned[key] = configuration[key];
+    }
+  });
+  return cleaned;
+}