diff --git a/src/codecs/imagequant/options.tsx b/src/codecs/imagequant/options.tsx
index d9dc8128..d5bd6cfc 100644
--- a/src/codecs/imagequant/options.tsx
+++ b/src/codecs/imagequant/options.tsx
@@ -30,15 +30,14 @@ export default class QuantizerOptions extends Component<Props, State> {
   @bind
   onChange(event: Event) {
     const form = (event.currentTarget as HTMLInputElement).closest('form') as HTMLFormElement;
+    const { options } = this.props;
 
-    const options: QuantizeOptions = {
-      zx: form.zx ? inputFieldValueAsNumber(form.zx) : this.props.options.zx,
-      maxNumColors: form.maxNumColors
-        ? inputFieldValueAsNumber(form.maxNumColors)
-        : this.props.options.maxNumColors,
+    const newOptions: QuantizeOptions = {
+      zx: inputFieldValueAsNumber(form.zx, options.zx),
+      maxNumColors: inputFieldValueAsNumber(form.maxNumColors, options.maxNumColors),
       dither: inputFieldValueAsNumber(form.dither),
     };
-    this.props.onChange(options);
+    this.props.onChange(newOptions);
   }
 
   render({ options }: Props, { extendedSettings }: State) {
diff --git a/src/codecs/mozjpeg/options.tsx b/src/codecs/mozjpeg/options.tsx
index 84b86ec5..31602ccb 100644
--- a/src/codecs/mozjpeg/options.tsx
+++ b/src/codecs/mozjpeg/options.tsx
@@ -2,158 +2,197 @@ import { h, Component } from 'preact';
 import { bind } from '../../lib/initial-util';
 import { inputFieldChecked, inputFieldValueAsNumber } from '../../lib/util';
 import { EncodeOptions, MozJpegColorSpace } from './encoder-meta';
-import '../../custom-els/RangeInput';
+import * as style from '../../components/options/style.scss';
+import Checkbox from '../../components/checkbox';
+import Expander from '../../components/expander';
+import Select from '../../components/select';
+import Range from '../../components/range';
+import linkState from 'linkstate';
 
-type Props = {
-  options: EncodeOptions,
-  onChange(newOptions: EncodeOptions): void,
-};
+interface Props {
+  options: EncodeOptions;
+  onChange(newOptions: EncodeOptions): void;
+}
+
+interface State {
+  showAdvanced: boolean;
+}
+
+export default class MozJPEGEncoderOptions extends Component<Props, State> {
+  state: State = {
+    showAdvanced: false,
+  };
 
-export default class MozJPEGEncoderOptions extends Component<Props, {}> {
   @bind
   onChange(event: Event) {
     const form = (event.currentTarget as HTMLInputElement).closest('form') as HTMLFormElement;
+    const { options } = this.props;
 
-    const options: EncodeOptions = {
+    const newOptions: EncodeOptions = {
       // Copy over options the form doesn't currently care about, eg arithmetic
       ...this.props.options,
       // And now stuff from the form:
       // .checked
-      baseline: inputFieldChecked(form.baseline),
-      progressive: inputFieldChecked(form.progressive),
-      optimize_coding: inputFieldChecked(form.optimize_coding),
-      trellis_multipass: inputFieldChecked(form.trellis_multipass),
-      trellis_opt_zero: inputFieldChecked(form.trellis_opt_zero),
-      trellis_opt_table: inputFieldChecked(form.trellis_opt_table),
+      baseline: inputFieldChecked(form.baseline, options.baseline),
+      progressive: inputFieldChecked(form.progressive, options.progressive),
+      optimize_coding: inputFieldChecked(form.optimize_coding, options.optimize_coding),
+      trellis_multipass: inputFieldChecked(form.trellis_multipass, options.trellis_multipass),
+      trellis_opt_zero: inputFieldChecked(form.trellis_opt_zero, options.trellis_opt_zero),
+      trellis_opt_table: inputFieldChecked(form.trellis_opt_table, options.trellis_opt_table),
       // .value
-      quality: inputFieldValueAsNumber(form.quality),
-      smoothing: inputFieldValueAsNumber(form.smoothing),
-      color_space: inputFieldValueAsNumber(form.color_space),
-      quant_table: inputFieldValueAsNumber(form.quant_table),
-      trellis_loops: inputFieldValueAsNumber(form.trellis_loops),
+      quality: inputFieldValueAsNumber(form.quality, options.quality),
+      smoothing: inputFieldValueAsNumber(form.smoothing, options.smoothing),
+      color_space: inputFieldValueAsNumber(form.color_space, options.color_space),
+      quant_table: inputFieldValueAsNumber(form.quant_table, options.quant_table),
+      trellis_loops: inputFieldValueAsNumber(form.trellis_loops, options.trellis_loops),
     };
-    this.props.onChange(options);
+    this.props.onChange(newOptions);
   }
 
-  render({ options }: Props) {
+  render({ options }: Props, { showAdvanced }: State) {
     // I'm rendering both lossy and lossless forms, as it becomes much easier when
     // gathering the data.
     return (
-      <form>
-        <label>
-          Quality:
-          <range-input
+      <form class={style.optionsSection}>
+        <div class={style.optionOneCell}>
+          <Range
             name="quality"
             min="0"
             max="100"
-            value={'' + options.quality}
-            onChange={this.onChange}
-          />
-        </label>
-        <label>
-          <input
-            name="baseline"
-            type="checkbox"
-            checked={options.baseline}
-            onChange={this.onChange}
-          />
-          <span>Baseline (worse but legacy-compatible)</span>
-        </label>
-        <label style={{ display: options.baseline ? 'none' : '' }}>
-          <input
-            name="progressive"
-            type="checkbox"
-            checked={options.progressive}
-            onChange={this.onChange}
-          />
-          <span>Progressive multi-pass rendering</span>
-        </label>
-        <label style={{ display: options.baseline ? '' : 'none' }}>
-          <input
-            name="optimize_coding"
-            type="checkbox"
-            checked={options.optimize_coding}
-            onChange={this.onChange}
-          />
-          <span>Optimize Huffman table</span>
-        </label>
-        <label>
-          Smoothing:
-          <range-input
-            name="smoothing"
-            min="0"
-            max="100"
-            value={'' + options.smoothing}
-            onChange={this.onChange}
-          />
-        </label>
-        <label>
-          Output color space:
-          <select
-            name="color_space"
-            value={'' + options.color_space}
-            onChange={this.onChange}
+            value={options.quality}
+            onInput={this.onChange}
           >
-            <option value={MozJpegColorSpace.GRAYSCALE}>Grayscale</option>
-            <option value={MozJpegColorSpace.RGB}>RGB (sub-optimal)</option>
-            <option value={MozJpegColorSpace.YCbCr}>YCbCr (optimized for color)</option>
-          </select>
-        </label>
-        <label>
-          Quantization table:
-          <select
-            name="quant_table"
-            value={'' + options.quant_table}
-            onChange={this.onChange}
-          >
-            <option value="0">JPEG Annex K</option>
-            <option value="1">Flat</option>
-            <option value="2">MSSIM-tuned Kodak</option>
-            <option value="3">ImageMagick</option>
-            <option value="4">PSNR-HVS-M-tuned Kodak</option>
-            <option value="5">Klein et al</option>
-            <option value="6">Watson et al</option>
-            <option value="7">Ahumada et al</option>
-            <option value="8">Peterson et al</option>
-          </select>
-        </label>
-        <label>
-          <input
-            name="trellis_multipass"
-            type="checkbox"
-            checked={options.trellis_multipass}
-            onChange={this.onChange}
-          />
-          <span>Consider multiple scans during trellis quantization</span>
-        </label>
-        <label style={{ display: options.trellis_multipass ? '' : 'none' }}>
-          <input
-            name="trellis_opt_zero"
-            type="checkbox"
-            checked={options.trellis_opt_zero}
-            onChange={this.onChange}
-          />
-          <span>Optimize runs of zero blocks</span>
-        </label>
-        <label>
-          <input
-            name="trellis_opt_table"
-            type="checkbox"
-            checked={options.trellis_opt_table}
-            onChange={this.onChange}
-          />
-          <span>Optimize after trellis quantization</span>
-        </label>
-        <label>
-          Trellis quantization passes:
-          <range-input
-            name="trellis_loops"
-            min="1"
-            max="50"
-            value={'' + options.trellis_loops}
-            onChange={this.onChange}
+            Quality:
+          </Range>
+        </div>
+        <label class={style.optionInputFirst}>
+          <Checkbox
+            checked={showAdvanced}
+            onChange={linkState(this, 'showAdvanced')}
           />
+          Show advanced settings
         </label>
+        <Expander>
+          {showAdvanced ?
+            <div>
+              <label class={style.optionInputFirst}>
+                <Checkbox
+                  name="baseline"
+                  checked={options.baseline}
+                  onChange={this.onChange}
+                />
+                Pointless spec compliance
+              </label>
+              <Expander>
+                {options.baseline ? null :
+                  <label class={style.optionInputFirst}>
+                    <Checkbox
+                      name="progressive"
+                      checked={options.progressive}
+                      onChange={this.onChange}
+                    />
+                    Progressive rendering
+                  </label>
+                }
+              </Expander>
+              <Expander>
+                {options.baseline ?
+                  <label class={style.optionInputFirst}>
+                    <Checkbox
+                      name="optimize_coding"
+                      checked={options.optimize_coding}
+                      onChange={this.onChange}
+                    />
+                    Optimize Huffman table
+                  </label>
+                  : null
+                }
+              </Expander>
+              <div class={style.optionOneCell}>
+                <Range
+                  name="smoothing"
+                  min="0"
+                  max="100"
+                  value={options.smoothing}
+                  onInput={this.onChange}
+                >
+                  Smoothing:
+                </Range>
+              </div>
+              <label class={style.optionTextFirst}>
+                Channels:
+                <Select
+                  name="color_space"
+                  value={options.color_space}
+                  onChange={this.onChange}
+                >
+                  <option value={MozJpegColorSpace.GRAYSCALE}>Grayscale</option>
+                  <option value={MozJpegColorSpace.RGB}>RGB</option>
+                  <option value={MozJpegColorSpace.YCbCr}>YCbCr</option>
+                </Select>
+              </label>
+              <label class={style.optionTextFirst}>
+                Quantization:
+                <Select
+                  name="quant_table"
+                  value={options.quant_table}
+                  onChange={this.onChange}
+                >
+                  <option value="0">JPEG Annex K</option>
+                  <option value="1">Flat</option>
+                  <option value="2">MSSIM-tuned Kodak</option>
+                  <option value="3">ImageMagick</option>
+                  <option value="4">PSNR-HVS-M-tuned Kodak</option>
+                  <option value="5">Klein et al</option>
+                  <option value="6">Watson et al</option>
+                  <option value="7">Ahumada et al</option>
+                  <option value="8">Peterson et al</option>
+                </Select>
+              </label>
+              <label class={style.optionInputFirst}>
+                <Checkbox
+                  name="trellis_multipass"
+                  checked={options.trellis_multipass}
+                  onChange={this.onChange}
+                />
+                Trellis multipass
+              </label>
+              <Expander>
+                {options.trellis_multipass ?
+                  <label class={style.optionInputFirst}>
+                    <Checkbox
+                      name="trellis_opt_zero"
+                      checked={options.trellis_opt_zero}
+                      onChange={this.onChange}
+                    />
+                    Optimize zero block runs
+                  </label>
+                  : null
+                }
+              </Expander>
+              <label class={style.optionInputFirst}>
+                <Checkbox
+                  name="trellis_opt_table"
+                  checked={options.trellis_opt_table}
+                  onChange={this.onChange}
+                />
+                Optimize after trellis quantization
+              </label>
+              <div class={style.optionOneCell}>
+                <Range
+                  name="trellis_loops"
+                  min="1"
+                  max="50"
+                  value={options.trellis_loops}
+                  onInput={this.onChange}
+                >
+                  Trellis quantization passes:
+                </Range>
+              </div>
+            </div>
+            : null
+          }
+        </Expander>
       </form>
     );
   }
diff --git a/src/codecs/resize/options.tsx b/src/codecs/resize/options.tsx
index 95d5387b..881c81a8 100644
--- a/src/codecs/resize/options.tsx
+++ b/src/codecs/resize/options.tsx
@@ -1,7 +1,7 @@
 import { h, Component } from 'preact';
 import linkState from 'linkstate';
 import { bind, linkRef } from '../../lib/initial-util';
-import { inputFieldValueAsNumber } from '../../lib/util';
+import { inputFieldValueAsNumber, inputFieldValue } from '../../lib/util';
 import { ResizeOptions } from './processor-meta';
 import * as style from '../../components/options/style.scss';
 import Checkbox from '../../components/checkbox';
@@ -27,18 +27,21 @@ export default class ResizerOptions extends Component<Props, State> {
   form?: HTMLFormElement;
 
   private reportOptions() {
-    const width = this.form!.width as HTMLInputElement;
-    const height = this.form!.height as HTMLInputElement;
+    const form = this.form!;
+    const width = form.width as HTMLInputElement;
+    const height = form.height as HTMLInputElement;
+    const { options } = this.props;
 
     if (!width.checkValidity() || !height.checkValidity()) return;
 
-    const options: ResizeOptions = {
+    const newOptions: ResizeOptions = {
       width: inputFieldValueAsNumber(width),
       height: inputFieldValueAsNumber(height),
-      method: this.form!.resizeMethod.value,
-      fitMethod: this.form!.fitMethod ? this.form!.fitMethod.value : this.props.options.fitMethod,
+      method: form.resizeMethod.value,
+      // Casting, as the formfield only returns the correct values.
+      fitMethod: inputFieldValue(form.fitMethod, options.fitMethod) as ResizeOptions['fitMethod'],
     };
-    this.props.onChange(options);
+    this.props.onChange(newOptions);
   }
 
   @bind
diff --git a/src/components/Options/index.tsx b/src/components/Options/index.tsx
index db9ee52d..30d203ad 100644
--- a/src/components/Options/index.tsx
+++ b/src/components/Options/index.tsx
@@ -192,8 +192,6 @@ export default class Options extends Component<Props, State> {
           }
         </section>
 
-        {/*
-
         {EncoderOptionComponent &&
           <EncoderOptionComponent
             options={
@@ -205,6 +203,8 @@ export default class Options extends Component<Props, State> {
           />
         }
 
+        {/*
+
         <div class={style.row}>
           <button onClick={this.onCopyToOtherClick}>Copy settings to other side</button>
         </div>
diff --git a/src/components/range/style.scss b/src/components/range/style.scss
index 40597af6..069b2bb2 100644
--- a/src/components/range/style.scss
+++ b/src/components/range/style.scss
@@ -29,6 +29,7 @@
   box-sizing: border-box;
   text-decoration: underline;
   text-decoration-style: dotted;
+  text-underline-position: under;
   width: 48px;
   position: relative;
   left: 5px;
diff --git a/src/lib/util.ts b/src/lib/util.ts
index 4e974782..cecf38fc 100644
--- a/src/lib/util.ts
+++ b/src/lib/util.ts
@@ -203,25 +203,40 @@ export function nativeResize(
 
 /**
  * @param field An HTMLInputElement, but the casting is done here to tidy up onChange.
+ * @param defaultVal Value to return if 'field' doesn't exist.
  */
-export function inputFieldValueAsNumber(field: any): number {
-  return Number((field as HTMLInputElement).value);
+export function inputFieldValueAsNumber(field: any, defaultVal: number = 0): number {
+  if (!field) return defaultVal;
+  return Number(inputFieldValue(field));
 }
 
 /**
  * @param field An HTMLInputElement, but the casting is done here to tidy up onChange.
+ * @param defaultVal Value to return if 'field' doesn't exist.
  */
-export function inputFieldCheckedAsNumber(field: any): number {
+export function inputFieldCheckedAsNumber(field: any, defaultVal: number = 0): number {
+  if (!field) return defaultVal;
   return Number(inputFieldChecked(field));
 }
 
 /**
  * @param field An HTMLInputElement, but the casting is done here to tidy up onChange.
+ * @param defaultVal Value to return if 'field' doesn't exist.
  */
-export function inputFieldChecked(field: any): boolean {
+export function inputFieldChecked(field: any, defaultVal: boolean = false): boolean {
+  if (!field) return defaultVal;
   return (field as HTMLInputElement).checked;
 }
 
+/**
+ * @param field An HTMLInputElement, but the casting is done here to tidy up onChange.
+ * @param defaultVal Value to return if 'field' doesn't exist.
+ */
+export function inputFieldValue(field: any, defaultVal: string = ''): string {
+  if (!field) return defaultVal;
+  return (field as HTMLInputElement).value;
+}
+
 /**
  * Creates a promise that resolves when the user types the konami code.
  */