diff --git a/tfjs-backend-webgpu/src/backend_webgpu.ts b/tfjs-backend-webgpu/src/backend_webgpu.ts
index 69e6a04e7b1..85b14a3550a 100644
--- a/tfjs-backend-webgpu/src/backend_webgpu.ts
+++ b/tfjs-backend-webgpu/src/backend_webgpu.ts
@@ -474,16 +474,16 @@ export class WebGPUBackend extends KernelBackend {
 
   public runWebGPUProgram(
       program: webgpu_program.WebGPUProgram, inputs: TensorInfo[],
-      outputDtype: DataType, programUniforms?: number[]): TensorInfo {
+      outputDtype: DataType,
+      programUniforms?: Uint32Array|Int32Array|Float32Array): TensorInfo {
     const output = this.makeTensorInfo(program.outputShape, outputDtype);
 
     let uniformDataLength;
     let uniforms: GPUBindingResource;
     if (program.uniforms) {
       // TODO: handle padding of program-specific uniforms
-      const uniformData = new Int32Array(programUniforms);
-      uniformDataLength = uniformData.byteLength;
-      uniforms = this.makeUniforms(uniformData);
+      uniformDataLength = programUniforms.byteLength;
+      uniforms = this.makeUniforms(programUniforms);
     }
 
     const inputsData = inputs.map((input: TensorInfo, i: number) => {
@@ -594,7 +594,8 @@ export class WebGPUBackend extends KernelBackend {
     return timeElapsedNanos / 1000000;
   }
 
-  private makeUniforms(data: Uint32Array|Int32Array): GPUBindingResource {
+  private makeUniforms(data: Uint32Array|Int32Array|
+                       Float32Array): GPUBindingResource {
     const dimensionsBuffer = this.acquireBuffer(
         data.byteLength, GPUBufferUsage.COPY_DST | GPUBufferUsage.UNIFORM);
     this.queue.writeBuffer(dimensionsBuffer, 0, data);
diff --git a/tfjs-backend-webgpu/src/kernels/ArgMax.ts b/tfjs-backend-webgpu/src/kernels/ArgMax.ts
index 91c35db94b2..daeb23f64f8 100644
--- a/tfjs-backend-webgpu/src/kernels/ArgMax.ts
+++ b/tfjs-backend-webgpu/src/kernels/ArgMax.ts
@@ -40,7 +40,8 @@ export function argMax(
 
   backend_util.assertAxesAreInnerMostDims('argMax', [axes[0]], $x.shape.length);
   const program = new ArgMinMaxProgram($x.shape, axes[0], 'max');
-  const out = backend.runWebGPUProgram(program, [$x], 'int32', [axes[0]]);
+  const uniformData = new Int32Array([axes[0]]);
+  const out = backend.runWebGPUProgram(program, [$x], 'int32', uniformData);
   intermediateTensorInfos.forEach(t => backend.disposeData(t.dataId));
   return out;
 }
diff --git a/tfjs-backend-webgpu/src/kernels/ArgMin.ts b/tfjs-backend-webgpu/src/kernels/ArgMin.ts
index d5f4eb05887..44810c26dd4 100644
--- a/tfjs-backend-webgpu/src/kernels/ArgMin.ts
+++ b/tfjs-backend-webgpu/src/kernels/ArgMin.ts
@@ -40,7 +40,8 @@ export function argMin(
 
   backend_util.assertAxesAreInnerMostDims('argMin', [axes[0]], $x.shape.length);
   const program = new ArgMinMaxProgram($x.shape, axes[0], 'min');
-  const out = backend.runWebGPUProgram(program, [$x], 'int32', [axes[0]]);
+  const uniformData = new Int32Array([axes[0]]);
+  const out = backend.runWebGPUProgram(program, [$x], 'int32', uniformData);
   intermediateTensorInfos.forEach(t => backend.disposeData(t.dataId));
   return out;
 }
diff --git a/tfjs-backend-webgpu/src/kernels/AvgPool.ts b/tfjs-backend-webgpu/src/kernels/AvgPool.ts
index 04d15e03bc5..ae6d63e536c 100644
--- a/tfjs-backend-webgpu/src/kernels/AvgPool.ts
+++ b/tfjs-backend-webgpu/src/kernels/AvgPool.ts
@@ -52,8 +52,8 @@ export function avgPool(
     convInfo.effectiveFilterWidth,
     convInfo.effectiveFilterHeight  // Filter dims.
   ];
-
-  return backend.runWebGPUProgram(program, [x], x.dtype, dimensions);
+  const uniformData = new Int32Array(dimensions);
+  return backend.runWebGPUProgram(program, [x], x.dtype, uniformData);
 }
 
 export const avgPoolConfig: KernelConfig = {
diff --git a/tfjs-backend-webgpu/src/kernels/Conv2D.ts b/tfjs-backend-webgpu/src/kernels/Conv2D.ts
index 7a4e7b54969..0038fe01cc3 100644
--- a/tfjs-backend-webgpu/src/kernels/Conv2D.ts
+++ b/tfjs-backend-webgpu/src/kernels/Conv2D.ts
@@ -70,8 +70,9 @@ export function conv2d(
     convInfo.strideHeight, convInfo.strideWidth, convInfo.dilationHeight,
     convInfo.dilationWidth
   ];
+  const uniformData = new Int32Array(dimensions);
 
-  return backend.runWebGPUProgram(program, [x, filter], x.dtype, dimensions);
+  return backend.runWebGPUProgram(program, [x, filter], x.dtype, uniformData);
 }
 
 export const conv2DConfig: KernelConfig = {
diff --git a/tfjs-backend-webgpu/src/kernels/DepthwiseConv2dNative.ts b/tfjs-backend-webgpu/src/kernels/DepthwiseConv2dNative.ts
index 6508645e062..ffd6942413e 100644
--- a/tfjs-backend-webgpu/src/kernels/DepthwiseConv2dNative.ts
+++ b/tfjs-backend-webgpu/src/kernels/DepthwiseConv2dNative.ts
@@ -46,7 +46,8 @@ export function depthwiseConv2dNative(args: {
     convInfo.dilationHeight, convInfo.dilationWidth, convInfo.inHeight,
     convInfo.inWidth
   ];
-  return backend.runWebGPUProgram(program, [x, filter], x.dtype, dimensions);
+  const uniformData = new Int32Array(dimensions);
+  return backend.runWebGPUProgram(program, [x, filter], x.dtype, uniformData);
 }
 
 export const depthwiseConv2dNativeConfig: KernelConfig = {
diff --git a/tfjs-backend-webgpu/src/kernels/Fill.ts b/tfjs-backend-webgpu/src/kernels/Fill.ts
index 507f7f8c4cf..2f749b1fbb3 100644
--- a/tfjs-backend-webgpu/src/kernels/Fill.ts
+++ b/tfjs-backend-webgpu/src/kernels/Fill.ts
@@ -34,8 +34,9 @@ export function fill(args: {backend: WebGPUBackend, attrs: FillAttrs}):
     values.fill(value as string);
     return backend.makeTensorInfo(shape, dtype, values);
   } else {
-    const program = new FillProgram(shape, value as number);
-    return backend.runWebGPUProgram(program, [], dtype);
+    const program = new FillProgram(shape);
+    const uniformData = new Float32Array([value as number]);
+    return backend.runWebGPUProgram(program, [], dtype, uniformData);
   }
 }
 
diff --git a/tfjs-backend-webgpu/src/kernels/FusedConv2D.ts b/tfjs-backend-webgpu/src/kernels/FusedConv2D.ts
index 760baa7b0be..5af22ea60b9 100644
--- a/tfjs-backend-webgpu/src/kernels/FusedConv2D.ts
+++ b/tfjs-backend-webgpu/src/kernels/FusedConv2D.ts
@@ -96,7 +96,7 @@ export function fusedConv2d(args: {
     convInfo.strideHeight, convInfo.strideWidth, convInfo.dilationHeight,
     convInfo.dilationWidth
   ];
-
+  const uniformData = new Int32Array(dimensions);
   const inputVar: TensorInfo[] = [x, filter];
   if (hasBias) {
     inputVar.push(bias);
@@ -104,7 +104,7 @@ export function fusedConv2d(args: {
   if (hasPreluActivationWeights) {
     inputVar.push(preluActivationWeights);
   }
-  return backend.runWebGPUProgram(program, inputVar, x.dtype, dimensions);
+  return backend.runWebGPUProgram(program, inputVar, x.dtype, uniformData);
 }
 
 export const fusedConv2DConfig: KernelConfig = {
diff --git a/tfjs-backend-webgpu/src/kernels/FusedDepthwiseConv2D.ts b/tfjs-backend-webgpu/src/kernels/FusedDepthwiseConv2D.ts
index 9caa02e2a34..ac32b4e3bc3 100644
--- a/tfjs-backend-webgpu/src/kernels/FusedDepthwiseConv2D.ts
+++ b/tfjs-backend-webgpu/src/kernels/FusedDepthwiseConv2D.ts
@@ -66,8 +66,9 @@ export function fusedDepthwiseConv2D(args: {
     convInfo.dilationHeight, convInfo.dilationWidth, convInfo.inHeight,
     convInfo.inWidth
   ];
+  const uniformData = new Int32Array(dimensions);
   const result =
-      backend.runWebGPUProgram(program, programInputs, 'float32', dimensions);
+      backend.runWebGPUProgram(program, programInputs, 'float32', uniformData);
 
   return result;
 }
diff --git a/tfjs-backend-webgpu/src/kernels/MaxPool.ts b/tfjs-backend-webgpu/src/kernels/MaxPool.ts
index 59b19b50f93..1ef0706f07d 100644
--- a/tfjs-backend-webgpu/src/kernels/MaxPool.ts
+++ b/tfjs-backend-webgpu/src/kernels/MaxPool.ts
@@ -50,8 +50,8 @@ export function maxPool(
     convInfo.effectiveFilterWidth,
     convInfo.effectiveFilterHeight  // Filter dims.
   ];
-
-  return backend.runWebGPUProgram(program, [x], x.dtype, dimensions);
+  const uniformData = new Int32Array(dimensions);
+  return backend.runWebGPUProgram(program, [x], x.dtype, uniformData);
 }
 
 export const maxPoolConfig: KernelConfig = {
diff --git a/tfjs-backend-webgpu/src/kernels/PadV2.ts b/tfjs-backend-webgpu/src/kernels/PadV2.ts
index 7ad80aae1ce..765c2345375 100644
--- a/tfjs-backend-webgpu/src/kernels/PadV2.ts
+++ b/tfjs-backend-webgpu/src/kernels/PadV2.ts
@@ -26,9 +26,9 @@ export const padV2 =
           const {inputs, backend, attrs} = args;
           const {x} = inputs;
           const {paddings, constantValue} = attrs;
-
-          const program = new PadProgram(x.shape, paddings, constantValue);
-          return backend.runWebGPUProgram(program, [x], x.dtype);
+          const uniformData = new Float32Array([constantValue]);
+          const program = new PadProgram(x.shape, paddings);
+          return backend.runWebGPUProgram(program, [x], x.dtype, uniformData);
         };
 
 export const padV2Config: KernelConfig = {
diff --git a/tfjs-backend-webgpu/src/kernels/fill_webgpu.ts b/tfjs-backend-webgpu/src/kernels/fill_webgpu.ts
index 04876ca4c94..668bb1448bf 100644
--- a/tfjs-backend-webgpu/src/kernels/fill_webgpu.ts
+++ b/tfjs-backend-webgpu/src/kernels/fill_webgpu.ts
@@ -24,19 +24,18 @@ export class FillProgram implements WebGPUProgram {
   shaderKey: string;
   dispatchLayout: {x: number[]};
   dispatch: [number, number, number];
+  uniforms = 'float value;';
   workPerThread = 4;
   workGroupSize: [number, number, number] = [16, 1, 1];
-  value: number;
 
-  constructor(shape: number[], value: number) {
+  constructor(shape: number[]) {
     this.outputShape = shape;
     this.dispatchLayout = flatDispatchLayout(this.outputShape);
     this.dispatch = computeDispatch(
         this.dispatchLayout, this.outputShape, this.workGroupSize,
         [this.workPerThread, 1, 1]);
 
-    this.value = value;
-    this.shaderKey = `fill_${value}`;
+    this.shaderKey = 'fill';
   }
 
   getUserCode(): string {
@@ -47,7 +46,7 @@ export class FillProgram implements WebGPUProgram {
       for (int i = 0; i < ${this.workPerThread}; i++) {
         int flatIndex = index * ${this.workPerThread} + i;
         if (flatIndex < ${size}) {
-          setOutput(flatIndex,${this.value});
+          setOutput(flatIndex, value);
         }
       }
     }
diff --git a/tfjs-backend-webgpu/src/kernels/pad_webgpu.ts b/tfjs-backend-webgpu/src/kernels/pad_webgpu.ts
index aca12bf98a1..a6e0883deda 100644
--- a/tfjs-backend-webgpu/src/kernels/pad_webgpu.ts
+++ b/tfjs-backend-webgpu/src/kernels/pad_webgpu.ts
@@ -28,15 +28,13 @@ export class PadProgram implements WebGPUProgram {
   dispatchLayout: {x: number[]};
   dispatch: [number, number, number];
   variableNames = ['x'];
+  uniforms = 'float constantValue;';
   workPerThread = 8;
   workGroupSize: [number, number, number] = [16, 1, 1];
   xShape: number[];
   paddings: Array<[number, number]>;
-  constantValue: number;
 
-  constructor(
-      xShape: number[], paddings: Array<[number, number]>,
-      constantValue: number) {
+  constructor(xShape: number[], paddings: Array<[number, number]>) {
     this.outputShape = paddings.map(
         (p, i) => p[0] /* beforePad */ + xShape[i] + p[1] /* afterPad */);
     this.dispatchLayout = flatDispatchLayout(this.outputShape);
@@ -46,8 +44,7 @@ export class PadProgram implements WebGPUProgram {
 
     this.xShape = xShape;
     this.paddings = paddings;
-    this.constantValue = constantValue;
-    this.shaderKey = `pad_${paddings}_${constantValue}`;
+    this.shaderKey = `pad_${paddings}`;
   }
 
   getUserCode(): string {
@@ -82,7 +79,7 @@ export class PadProgram implements WebGPUProgram {
             ${type} outC = getCoordsFromFlatIndex(flatIndex);
 
             if (${leftPadCondition} || ${rightPadCondition}) {
-              setOutput(flatIndex, ${this.constantValue});
+              setOutput(flatIndex, constantValue);
             } else {
               ${type} coords = outC - start;
               setOutput(flatIndex, getX(${unpackedCoords}));
diff --git a/tfjs-backend-webgpu/src/setup_test.ts b/tfjs-backend-webgpu/src/setup_test.ts
index 78d48dd060a..3568f4bbfb0 100644
--- a/tfjs-backend-webgpu/src/setup_test.ts
+++ b/tfjs-backend-webgpu/src/setup_test.ts
@@ -411,6 +411,14 @@ const TEST_FILTERS: TestFilter[] = [
       'dilation2d'  // 'dilation2d' not yet implemented.
     ]
   },
+  {
+    include: 'fill',
+    excludes: [
+      'string',            // String is not yet implemented.
+      '5D',                // Rank 5 is not yet supported.
+      'rotateWithOffset',  // 'RotateWithOffset' not registered.
+    ]
+  },
   {
     include: 'Reduction: max',
     excludes: [