diff --git a/wasm/elastix-wasm.cxx b/wasm/elastix-wasm.cxx
index 6f35a84d..79e79d95 100644
--- a/wasm/elastix-wasm.cxx
+++ b/wasm/elastix-wasm.cxx
@@ -54,7 +54,7 @@ class PipelineFunctor
     pipeline.add_option("-m,--moving", movingImage, "Moving image")->type_name("INPUT_IMAGE");
 
     std::string initialTransformFile;
-    pipeline.add_option("-i,--initial-transform", initialTransformFile, "Initial transform to apply before registrtion ")->type_name("INPUT_BINARY_FILE");
+    pipeline.add_option("-i,--initial-transform", initialTransformFile, "Initial transform to apply before registration")->type_name("INPUT_BINARY_FILE");
 
     itk::wasm::InputTextStream parameterObjectJson;
     pipeline.add_option("parameter-object", parameterObjectJson, "Elastix parameter object representation")
diff --git a/wasm/python/itkwasm-elastix-emscripten/itkwasm_elastix_emscripten/elastix_async.py b/wasm/python/itkwasm-elastix-emscripten/itkwasm_elastix_emscripten/elastix_async.py
index 1124295e..629816f9 100644
--- a/wasm/python/itkwasm-elastix-emscripten/itkwasm_elastix_emscripten/elastix_async.py
+++ b/wasm/python/itkwasm-elastix-emscripten/itkwasm_elastix_emscripten/elastix_async.py
@@ -36,7 +36,7 @@ async def elastix_async(
     :param moving: Moving image
     :type  moving: Image
 
-    :param initial_transform: Initial transform to apply before registrtion 
+    :param initial_transform: Initial transform to apply before registration
     :type  initial_transform: os.PathLike
 
     :return: Resampled moving image
diff --git a/wasm/python/itkwasm-elastix-wasi/itkwasm_elastix_wasi/elastix.py b/wasm/python/itkwasm-elastix-wasi/itkwasm_elastix_wasi/elastix.py
index 6fc239e8..fa200701 100644
--- a/wasm/python/itkwasm-elastix-wasi/itkwasm_elastix_wasi/elastix.py
+++ b/wasm/python/itkwasm-elastix-wasi/itkwasm_elastix_wasi/elastix.py
@@ -36,7 +36,7 @@ def elastix(
     :param moving: Moving image
     :type  moving: Image
 
-    :param initial_transform: Initial transform to apply before registrtion 
+    :param initial_transform: Initial transform to apply before registration
     :type  initial_transform: os.PathLike
 
     :return: Resampled moving image
diff --git a/wasm/python/itkwasm-elastix-wasi/itkwasm_elastix_wasi/wasm_modules/elastix.wasi.wasm b/wasm/python/itkwasm-elastix-wasi/itkwasm_elastix_wasi/wasm_modules/elastix.wasi.wasm
index bb152ccf..81ab220f 100755
Binary files a/wasm/python/itkwasm-elastix-wasi/itkwasm_elastix_wasi/wasm_modules/elastix.wasi.wasm and b/wasm/python/itkwasm-elastix-wasi/itkwasm_elastix_wasi/wasm_modules/elastix.wasi.wasm differ
diff --git a/wasm/python/itkwasm-elastix/itkwasm_elastix/elastix.py b/wasm/python/itkwasm-elastix/itkwasm_elastix/elastix.py
index 647d99f3..85ccc2de 100644
--- a/wasm/python/itkwasm-elastix/itkwasm_elastix/elastix.py
+++ b/wasm/python/itkwasm-elastix/itkwasm_elastix/elastix.py
@@ -26,7 +26,7 @@ def elastix(
     :param moving: Moving image
     :type  moving: Image
 
-    :param initial_transform: Initial transform to apply before registrtion 
+    :param initial_transform: Initial transform to apply before registration
     :type  initial_transform: os.PathLike
 
     :return: Resampled moving image
diff --git a/wasm/python/itkwasm-elastix/itkwasm_elastix/elastix_async.py b/wasm/python/itkwasm-elastix/itkwasm_elastix/elastix_async.py
index 16eb467e..b7672d90 100644
--- a/wasm/python/itkwasm-elastix/itkwasm_elastix/elastix_async.py
+++ b/wasm/python/itkwasm-elastix/itkwasm_elastix/elastix_async.py
@@ -26,7 +26,7 @@ async def elastix_async(
     :param moving: Moving image
     :type  moving: Image
 
-    :param initial_transform: Initial transform to apply before registrtion 
+    :param initial_transform: Initial transform to apply before registration
     :type  initial_transform: os.PathLike
 
     :return: Resampled moving image
diff --git a/wasm/typescript/cypress/e2e/write-parameter-files.cy.ts b/wasm/typescript/cypress/e2e/write-parameter-files.cy.ts
index 218505e3..ca4edff9 100644
--- a/wasm/typescript/cypress/e2e/write-parameter-files.cy.ts
+++ b/wasm/typescript/cypress/e2e/write-parameter-files.cy.ts
@@ -17,12 +17,13 @@ describe('writeParameterFiles', () => {
   it('Write parameter files from a parameter object representation', function () {
     cy.get('sl-tab[panel="writeParameterFiles-panel"]').click()
 
-    const parametersFile = { contents: new Uint8Array(this['parameters_multiple.json']), fileName: 'parameters_multiple.json' }
-    cy.get('#writeParameterFilesInputs input[name="parameter-object-file"]').selectFile([parametersFile,], { force: true })
+    cy.get('#writeParameterFilesInputs sl-button[name="loadSampleInputs"]').click()
     cy.get('#writeParameterFiles-parameter-object-details').should('contain', '"AutomaticScalesEstimation"')
+    // cy.get returns a jquery object -- invoke to get the underlying element
+    cy.get('#writeParameterFilesInputs [name="parameter-files"]').invoke('get', '0').its('value').should('contain', 'translation')
 
     cy.get('#writeParameterFilesInputs sl-button[name="run"]').click()
 
-    cy.get('#writeParameterFiles-parameter-files-details').should('contain', '"AutomaticScalesEstimation"')
+    cy.get('#writeParameterFiles-parameter-files-details').should('contain', 'AutomaticScalesEstimation')
   })
 })
diff --git a/wasm/typescript/dist/pipelines/elastix.wasm b/wasm/typescript/dist/pipelines/elastix.wasm
index 97a72905..64d94949 100755
Binary files a/wasm/typescript/dist/pipelines/elastix.wasm and b/wasm/typescript/dist/pipelines/elastix.wasm differ
diff --git a/wasm/typescript/package-lock.json b/wasm/typescript/package-lock.json
index fd8aa186..ff652404 100644
--- a/wasm/typescript/package-lock.json
+++ b/wasm/typescript/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.1.0",
       "license": "Apache-2.0",
       "dependencies": {
-        "itk-wasm": "^1.0.0-b.140"
+        "itk-wasm": "^1.0.0-b.142"
       },
       "devDependencies": {
         "@rollup/plugin-commonjs": "^24.0.0",
@@ -22,7 +22,7 @@
         "ava": "^5.3.1",
         "cypress": "^13.2.0",
         "debug": "^4.3.4",
-        "itk-image-io": "^1.0.0-b.140",
+        "itk-image-io": "^1.0.0-b.142",
         "rollup": "^3.9.0",
         "rollup-plugin-copy": "^3.4.0",
         "rollup-plugin-ignore": "^1.0.10",
@@ -37,9 +37,9 @@
       }
     },
     "node_modules/@babel/runtime": {
-      "version": "7.22.15",
-      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.22.15.tgz",
-      "integrity": "sha512-T0O+aa+4w0u06iNmapipJXMV4HoUir03hpx3/YqXXhu9xim3w+dVphjFWl1OH8NbZHw5Lbm9k45drDkgq2VNNA==",
+      "version": "7.23.1",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.23.1.tgz",
+      "integrity": "sha512-hC2v6p8ZSI/W0HUzh3V8C5g+NwSKzKPtJwSpTjwl0o297GP9+ZLQSkdvHz46CM3LqyoXxq+5G9komY+eSqSO0g==",
       "dependencies": {
         "regenerator-runtime": "^0.14.0"
       },
@@ -3148,18 +3148,18 @@
       "dev": true
     },
     "node_modules/itk-image-io": {
-      "version": "1.0.0-b.141",
-      "resolved": "https://registry.npmjs.org/itk-image-io/-/itk-image-io-1.0.0-b.141.tgz",
-      "integrity": "sha512-OdJ/pfZrncoB73mXXeP2qq0GcDbXOnDQ2Nb8JZxxhTAA6BUY3daf6gFNpWj+Wu1GseGzpPNGF0s7QykhukXuXA==",
+      "version": "1.0.0-b.142",
+      "resolved": "https://registry.npmjs.org/itk-image-io/-/itk-image-io-1.0.0-b.142.tgz",
+      "integrity": "sha512-RBekgb5emTJLQsF0EPHgZD9TcsyLqvAZEyDIyEC7tN4vNtz3XIBa+9QzZlXDoX1GHdTrRxCIoHYr7QyMOQPrAw==",
       "dev": true,
       "dependencies": {
-        "itk-wasm": "1.0.0-b.141"
+        "itk-wasm": "1.0.0-b.142"
       }
     },
     "node_modules/itk-wasm": {
-      "version": "1.0.0-b.141",
-      "resolved": "https://registry.npmjs.org/itk-wasm/-/itk-wasm-1.0.0-b.141.tgz",
-      "integrity": "sha512-kuCwXftLlTgYq/+RTweSzr4o/TVpstVCyBWbxFqvGX4KD57M7XIABNeUBx3ggmrW1YqpY66fWLUC9QUUkZmYrQ==",
+      "version": "1.0.0-b.142",
+      "resolved": "https://registry.npmjs.org/itk-wasm/-/itk-wasm-1.0.0-b.142.tgz",
+      "integrity": "sha512-EMtl91UuG1GhPgPDhHVKsc404OIAevAk0LnglLS4VqSt5cGozgyx6Kx9wdZxw6b0+pTKjJjOiCZsElUCoUzn4Q==",
       "dependencies": {
         "@babel/runtime": "^7.15.4",
         "@thewtex/zstddec": "^0.1.2",
diff --git a/wasm/typescript/package.json b/wasm/typescript/package.json
index c1bbc28c..272b3034 100644
--- a/wasm/typescript/package.json
+++ b/wasm/typescript/package.json
@@ -40,7 +40,7 @@
   "author": "",
   "license": "Apache-2.0",
   "dependencies": {
-    "itk-wasm": "^1.0.0-b.140"
+    "itk-wasm": "^1.0.0-b.142"
   },
   "devDependencies": {
     "@rollup/plugin-commonjs": "^24.0.0",
@@ -53,7 +53,7 @@
     "ava": "^5.3.1",
     "cypress": "^13.2.0",
     "debug": "^4.3.4",
-    "itk-image-io": "^1.0.0-b.140",
+    "itk-image-io": "^1.0.0-b.142",
     "rollup": "^3.9.0",
     "rollup-plugin-copy": "^3.4.0",
     "rollup-plugin-ignore": "^1.0.10",
diff --git a/wasm/typescript/src/elastix-node.ts b/wasm/typescript/src/elastix-node.ts
index 067bdfc7..4c52a159 100644
--- a/wasm/typescript/src/elastix-node.ts
+++ b/wasm/typescript/src/elastix-node.ts
@@ -67,7 +67,7 @@ async function elastixNode(
   }
   if (typeof options.initialTransform !== "undefined") {
     const initialTransform = options.initialTransform
-    mountDirs.add(path.dirname(value as string))
+    mountDirs.add(path.dirname(initialTransform as string))
     args.push('--initial-transform')
 
     const name = initialTransform as string
diff --git a/wasm/typescript/src/elastix-options.ts b/wasm/typescript/src/elastix-options.ts
index 94582fb2..a94cfd8e 100644
--- a/wasm/typescript/src/elastix-options.ts
+++ b/wasm/typescript/src/elastix-options.ts
@@ -9,7 +9,7 @@ interface ElastixOptions {
   /** Moving image */
   moving?: Image
 
-  /** Initial transform to apply before registrtion  */
+  /** Initial transform to apply before registration */
   initialTransform?: string | File | BinaryFile
 
   /** Fixed-to-moving transform path */
diff --git a/wasm/typescript/test/browser/demo-app/elastix-load-sample-inputs.ts b/wasm/typescript/test/browser/demo-app/elastix-load-sample-inputs.ts
index 2b8aed6d..f283c1b8 100644
--- a/wasm/typescript/test/browser/demo-app/elastix-load-sample-inputs.ts
+++ b/wasm/typescript/test/browser/demo-app/elastix-load-sample-inputs.ts
@@ -1,6 +1,24 @@
 import { readImageArrayBuffer } from "itk-wasm"
 
 export default async function elastixLoadSampleInputs (model, preRun=false) {
+  const dataUrl = 'https://w3s.link/ipfs/bafybeifq7m3mb4m3mgbhft2vqejjgwxx4azmmzuxwf5cubajpyaf4hq2gq/data/input'
+
+  const parameterObjectButton = document.querySelector("#elastixInputs [name=parameter-object-file-button]")
+  if (!preRun) {
+    parameterObjectButton.loading = true
+  }
+  const parameterObjectFile = 'parameters_multiple.json'
+  const parameterObjectResponse = await fetch(`${dataUrl}/${parameterObjectFile}`)
+  const parameterObject = await parameterObjectResponse.json()
+  model.inputs.set("parameterObject", parameterObject)
+
+  const parameterObjectElement = document.getElementById('elastix-parameter-object-details')
+  if (!preRun) {
+    parameterObjectElement.innerHTML = `<pre>${globalThis.escapeHtml(JSON.stringify(parameterObject), globalThis.interfaceTypeJsonReplacer, 2)}</pre>`
+    parameterObjectElement.disabled = false
+    parameterObjectButton.loading = false
+  }
+
   const fixedButton = document.querySelector('#elastixInputs sl-button[name=fixed-file-button]')
   if (!preRun) {
     fixedButton.loading = true
diff --git a/wasm/typescript/test/browser/demo-app/index.html b/wasm/typescript/test/browser/demo-app/index.html
index 9d98edb9..e9b17109 100644
--- a/wasm/typescript/test/browser/demo-app/index.html
+++ b/wasm/typescript/test/browser/demo-app/index.html
@@ -104,7 +104,7 @@ <h3>👨‍💻 Live API Demo ✨</h3>
       <sl-tooltip content="Use the Upload button to provide the moving"><sl-details id="elastix-moving-details" summary="moving: Moving image" disabled></sl-details></sl-tooltip>
       <label for="moving-file"><sl-button name="moving-file-button" variant="primary" outline onclick="this.parentElement.nextElementSibling.click()">Upload</sp-button></label><input type="file" name="moving-file" style="display: none"/>
 <br /><br />
-      <sl-tooltip content="Use the Upload button to provide the initialTransform"><sl-details id="elastix-initial-transform-details" summary="initialTransform: Initial transform to apply before registrtion " disabled></sl-details></sl-tooltip>
+      <sl-tooltip content="Use the Upload button to provide the initialTransform"><sl-details id="elastix-initial-transform-details" summary="initialTransform: Initial transform to apply before registration" disabled></sl-details></sl-tooltip>
       <label for="initial-transform-file"><sl-button name="initial-transform-file-button" variant="primary" outline onclick="this.parentElement.nextElementSibling.click()">Upload</sl-button></label><input type="file"  name="initial-transform-file" style="display: none"/>
 <br /><br />
       <sl-input required name="transform" type="text" label="transform" help-text="Fixed-to-moving transform"></sl-input>
diff --git a/wasm/typescript/test/node/elastix-test.js b/wasm/typescript/test/node/elastix-test.js
index 14b30bca..7370d542 100644
--- a/wasm/typescript/test/node/elastix-test.js
+++ b/wasm/typescript/test/node/elastix-test.js
@@ -19,8 +19,9 @@ try {
 test('Default 2D registration', async t => {
   const fixedImage = await readImageLocalFile(path.join(testDataInputDirectory, 'CT_2D_head_fixed.iwi.cbor'))
   const movingImage = await readImageLocalFile(path.join(testDataInputDirectory, 'CT_2D_head_moving.iwi.cbor'))
+  const parameterObject = JSON.parse(fs.readFileSync(path.join(testDataInputDirectory, 'parameters_single.json'))) 
   const transform = path.join(testDataOutputDirectory, 'CT_2D_head_node_transform.txt')
-  const { result } = await elastixNode({ fixed: fixedImage, moving: movingImage, transformPath: transform })
+  const { result } = await elastixNode(parameterObject, { fixed: fixedImage, moving: movingImage, transformPath: transform })
 
   t.is(result.imageType.dimension, 2)
   t.is(result.imageType.componentType, 'int16')