diff --git a/frontend/src/components/grid-items.svelte b/frontend/src/components/grid-items.svelte
index 5effd17..3279417 100644
--- a/frontend/src/components/grid-items.svelte
+++ b/frontend/src/components/grid-items.svelte
@@ -3,7 +3,7 @@
   import Icon from './icon.svelte';
   import FormInput from './forminput.svelte';
   import contextMenu from '$lib/stores/contextmenu';
-  import { resolveKeypath, setValue } from '$lib/keypaths';
+  import { resolveKeypath, setValue } from '$lib/objects';
 
   export let items = [];
   export let columns = [];
diff --git a/frontend/src/components/objectviewer.svelte b/frontend/src/components/objectviewer.svelte
index 315cf0a..3e1e312 100644
--- a/frontend/src/components/objectviewer.svelte
+++ b/frontend/src/components/objectviewer.svelte
@@ -3,6 +3,7 @@
   import Modal from './modal.svelte';
   import ObjectTree from './objecttree.svelte';
   import { onDestroy } from 'svelte';
+  import { deepClone } from '$lib/objects';
 
   export let data;
 
@@ -11,7 +12,7 @@
   let _data;
 
   $: if (data) {
-    _data = JSON.parse(JSON.stringify(data));
+    _data = deepClone(data);
     for (const key of Object.keys(_data)) {
       if (typeof _data[key] === 'undefined') {
         delete _data[key];
diff --git a/frontend/src/lib/actions/input.js b/frontend/src/lib/actions/input.js
index bfd974a..5cb119a 100644
--- a/frontend/src/lib/actions/input.js
+++ b/frontend/src/lib/actions/input.js
@@ -1,5 +1,6 @@
 import { isInt } from '$lib/math';
 import { canBeObjectId, int32, int64, uint64 } from '$lib/mongo';
+import { jsonLooseParse } from '$lib/strings';
 
 export default function input(node, { autofocus, type, onValid, onInvalid, mandatory } = {
   autofocus: false,
@@ -26,7 +27,7 @@ export default function input(node, { autofocus, type, onValid, onInvalid, manda
     switch (type) {
       case 'json':
         try {
-          JSON.parse(node.value);
+          jsonLooseParse(node.value);
           return false;
         }
         catch {
diff --git a/frontend/src/lib/mongo/atomic-update-operators.json b/frontend/src/lib/mongo/atomic-update-operators.json
new file mode 100644
index 0000000..e7e8e56
--- /dev/null
+++ b/frontend/src/lib/mongo/atomic-update-operators.json
@@ -0,0 +1,29 @@
+{
+  "Fields": {
+    "$currentDate": "Current Date",
+    "$inc": "Increment",
+    "$min": "Min",
+    "$max": "Max",
+    "$mul": "Multiply",
+    "$rename": "Rename",
+    "$set": "Set",
+    "$setOnInsert": "Set on Insert",
+    "$unset": "Unset"
+  },
+  "Array": {
+    "$addToSet": "Add to Set",
+    "$pop": "Pop",
+    "$pull": "Pull",
+    "$push": "Push",
+    "$pullAll": "Push All"
+  },
+  "Modifiers": {
+    "$each": "Each",
+    "$position": "Position",
+    "$slice": "Slice",
+    "$sort": "Sort"
+  },
+  "Bitwise": {
+    "$bit": "Bit"
+  }
+}
diff --git a/frontend/src/lib/mongo/index.js b/frontend/src/lib/mongo/index.js
index 4d47039..10ecdbe 100644
--- a/frontend/src/lib/mongo/index.js
+++ b/frontend/src/lib/mongo/index.js
@@ -1,8 +1,9 @@
 import { ObjectId } from 'bson';
 import aggregationStages from './aggregation-stages.json';
+import atomicUpdateOperators from './atomic-update-operators.json';
 import locales from './locales.json';
 
-export { aggregationStages, locales };
+export { aggregationStages, atomicUpdateOperators, locales };
 
 // Calculate the min and max values of (un)signed integers with n bits
 export const intMin = bits => Math.pow(2, bits - 1) * -1;
diff --git a/frontend/src/lib/keypaths.js b/frontend/src/lib/objects.js
similarity index 94%
rename from frontend/src/lib/keypaths.js
rename to frontend/src/lib/objects.js
index b597d77..d960109 100644
--- a/frontend/src/lib/keypaths.js
+++ b/frontend/src/lib/objects.js
@@ -56,3 +56,8 @@ export function setValue(object, path, value) {
 
   return object;
 }
+
+export function deepClone(obj) {
+  // Room for improvement below
+  return JSON.parse(JSON.stringify(obj));
+}
diff --git a/frontend/src/lib/strings.js b/frontend/src/lib/strings.js
index 8e47075..c0050f4 100644
--- a/frontend/src/lib/strings.js
+++ b/frontend/src/lib/strings.js
@@ -2,3 +2,23 @@ export function capitalise(string = '') {
   const capitalised = string.charAt(0).toUpperCase() + string.slice(1);
   return capitalised;
 }
+
+export function jsonLooseParse(json) {
+  const obj = new Function(`return (${json})`)();
+  return obj;
+}
+
+export function convertLooseJson(json) {
+  const j = JSON.stringify(jsonLooseParse(json));
+  return j;
+}
+
+export function looseJsonIsValid(json) {
+  try {
+    jsonLooseParse(json);
+    return true;
+  }
+  catch {
+    return false;
+  }
+}
diff --git a/frontend/src/organisms/connection/collection/aggregate.svelte b/frontend/src/organisms/connection/collection/aggregate.svelte
index 3a7dcbf..cee90b4 100644
--- a/frontend/src/organisms/connection/collection/aggregate.svelte
+++ b/frontend/src/organisms/connection/collection/aggregate.svelte
@@ -5,6 +5,7 @@
   import MongoCollation from '$components/mongo-collation.svelte';
   import input from '$lib/actions/input';
   import { aggregationStageDocumentationURL, aggregationStages } from '$lib/mongo';
+  import { jsonLooseParse, looseJsonIsValid } from '$lib/strings';
   import { Aggregate } from '$wails/go/app/App';
   import { BrowserOpenURL } from '$wails/runtime/runtime';
   import { onMount } from 'svelte';
@@ -14,15 +15,7 @@
   const options = {};
   let stages = [];
   let settingsModalOpen = false;
-  $: invalid = !stages.length || stages.some(stage => {
-    try {
-      JSON.parse(stage.data);
-      return false;
-    }
-    catch {
-      return true;
-    }
-  });
+  $: invalid = !stages.length || stages.some(stage => !stage.data || !looseJsonIsValid(stage.data));
 
   function addStage() {
     stages = [ ...stages, { type: '$match' } ];
@@ -38,7 +31,7 @@
   }
 
   async function run() {
-    const pipeline = stages.map(stage => ({ [stage.type]: JSON.parse(stage.data) }));
+    const pipeline = stages.map(stage => ({ [stage.type]: jsonLooseParse(stage.data) }));
     await Aggregate(collection.hostKey, collection.dbKey, collection.key, JSON.stringify(pipeline), JSON.stringify(options));
   }
 
@@ -84,11 +77,10 @@
         <Icon name="cog" /> Settings
       </button>
     </div>
-
   </div>
 </form>
 
-<Modal title="Advanced settings" bind:show={settingsModalOpen}>
+<Modal title="Advanced aggregation settings" bind:show={settingsModalOpen}>
   <div class="settinggrid">
     <label for="allowDiskUse">Allow disk use</label>
     <div class="field">
diff --git a/frontend/src/organisms/connection/collection/components/form.svelte b/frontend/src/organisms/connection/collection/components/form.svelte
index 698950d..70c37b5 100644
--- a/frontend/src/organisms/connection/collection/components/form.svelte
+++ b/frontend/src/organisms/connection/collection/components/form.svelte
@@ -2,7 +2,7 @@
   import FormInput from '$components/forminput.svelte';
   import Icon from '$components/icon.svelte';
   import { inputTypes } from '$lib/mongo';
-  import { resolveKeypath, setValue } from '$lib/keypaths';
+  import { resolveKeypath, setValue } from '$lib/objects';
   import Hint from '$components/hint.svelte';
 
   export let item = {};
diff --git a/frontend/src/organisms/connection/collection/find.svelte b/frontend/src/organisms/connection/collection/find.svelte
index 8305efd..04f1e50 100644
--- a/frontend/src/organisms/connection/collection/find.svelte
+++ b/frontend/src/organisms/connection/collection/find.svelte
@@ -1,9 +1,10 @@
 <script>
-  import CodeExample from '$components/code-example.svelte';
+  // import CodeExample from '$components/code-example.svelte';
   import Grid from '$components/grid.svelte';
   import Icon from '$components/icon.svelte';
   import ObjectGrid from '$components/objectgrid.svelte';
   import input from '$lib/actions/input';
+  import { deepClone } from '$lib/objects';
   import queries from '$lib/stores/queries';
   import applicationSettings from '$lib/stores/settings';
   import views from '$lib/stores/views';
@@ -45,7 +46,7 @@
     if (newResult) {
       newResult.results = newResult.results?.map(s => EJSON.parse(s, { relaxed: false }));
       result = newResult;
-      submittedForm = JSON.parse(JSON.stringify(form));
+      submittedForm = deepClone(form);
     }
     resetFocus();
   }
@@ -157,12 +158,12 @@
     </div>
 
     <div class="form-row three">
-      <CodeExample {code} />
-      <button class="btn" type="button" on:click={loadQuery} title="Load query…">
-        <Icon name="upload" />
+      <!-- <CodeExample {code} /> -->
+      <button class="btn" type="button" on:click={loadQuery}>
+        <Icon name="upload" /> Load query…
       </button>
-      <button class="btn" type="button" on:click={saveQuery} title="Save query as…">
-        <Icon name="save" />
+      <button class="btn" type="button" on:click={saveQuery}>
+        <Icon name="save" /> Save as…
       </button>
       <button type="submit" class="btn" title="Run query">
         <Icon name="play" /> Run
@@ -274,7 +275,8 @@
   }
   .form-row.three {
     margin-bottom: 0rem;
-    grid-template: 1fr / 1fr repeat(3, auto);
+    grid-template: 1fr / repeat(3, auto);
+    justify-content: end;
   }
 
   .result {
diff --git a/frontend/src/organisms/connection/collection/index.svelte b/frontend/src/organisms/connection/collection/index.svelte
index ad9dcc0..d8375ad 100644
--- a/frontend/src/organisms/connection/collection/index.svelte
+++ b/frontend/src/organisms/connection/collection/index.svelte
@@ -29,6 +29,10 @@
     collection.key = collectionKey;
   }
 
+  $: if (hostKey || dbKey || collectionKey) {
+    tab = 'find';
+  }
+
   EventsOn('OpenCollectionTab', name => (tab = name || tab));
 
   async function catchQuery(event) {
diff --git a/frontend/src/organisms/connection/collection/indexes.svelte b/frontend/src/organisms/connection/collection/indexes.svelte
index c72efd2..1af7b57 100644
--- a/frontend/src/organisms/connection/collection/indexes.svelte
+++ b/frontend/src/organisms/connection/collection/indexes.svelte
@@ -43,6 +43,16 @@
 </script>
 
 <div class="indexes">
+  <div class="grid">
+    <ObjectGrid
+      key="name"
+      data={indexes}
+      getRootMenu={(_, idx) => [ { label: 'Drop this index', fn: () => drop(idx.name) } ]}
+      bind:activePath
+      on:trigger={e => openJson(e.detail.itemKey)}
+    />
+  </div>
+
   <div class="actions">
     <button class="btn" on:click={getIndexes}>
       <Icon name="reload" /> Reload
@@ -54,16 +64,6 @@
       <Icon name="x" /> Drop selected
     </button>
   </div>
-
-  <div class="grid">
-    <ObjectGrid
-      key="name"
-      data={indexes}
-      getRootMenu={(_, idx) => [ { label: 'Drop this index', fn: () => drop(idx.name) } ]}
-      bind:activePath
-      on:trigger={e => openJson(e.detail.itemKey)}
-    />
-  </div>
 </div>
 
 <ObjectViewer bind:data={objectViewerData} />
@@ -73,7 +73,7 @@
   .indexes {
     display: grid;
     gap: 0.5rem;
-    grid-template: auto 1fr / 1fr;
+    grid-template: 1fr auto / 1fr;
   }
 
   .indexes .grid {
diff --git a/frontend/src/organisms/connection/collection/insert.svelte b/frontend/src/organisms/connection/collection/insert.svelte
index a172b50..f730382 100644
--- a/frontend/src/organisms/connection/collection/insert.svelte
+++ b/frontend/src/organisms/connection/collection/insert.svelte
@@ -7,7 +7,7 @@
   import { randomString } from '$lib/math';
   import { inputTypes } from '$lib/mongo';
   import views from '$lib/stores/views';
-  import { capitalise } from '$lib/strings';
+  import { capitalise, convertLooseJson, jsonLooseParse } from '$lib/strings';
   import { InsertItems } from '$wails/go/app/App';
   import { EJSON } from 'bson';
   import { createEventDispatcher } from 'svelte';
@@ -32,7 +32,7 @@
   $: {
     if (collection.viewKey === 'list') {
       try {
-        newItems = EJSON.parse(json, { relaxed: false });
+        newItems = EJSON.deserialize(jsonLooseParse(json), { relaxed: false });
       }
       catch { /* ok */ }
     }
@@ -46,7 +46,7 @@
   }
 
   async function insert() {
-    insertedIds = await InsertItems(collection.hostKey, collection.dbKey, collection.key, json);
+    insertedIds = await InsertItems(collection.hostKey, collection.dbKey, collection.key, convertLooseJson(json));
     if ((collection.viewKey === 'list') && insertedIds) {
       newItems = [];
     }
@@ -95,15 +95,8 @@
 <form on:submit|preventDefault={insert}>
   <div class="items">
     {#if collection.viewKey === 'list'}
-      <label class="field">
-        <textarea
-          cols="30"
-          rows="10"
-          placeholder="[]"
-          class="code"
-          bind:value={json}
-          use:input={{ type: 'json', autofocus: true }}
-        ></textarea>
+      <label class="field json">
+        <textarea placeholder="[]" class="code" bind:value={json} use:input={{ type: 'json', autofocus: true }}></textarea>
       </label>
     {:else if viewType === 'form'}
       <div class="form">
@@ -208,4 +201,11 @@
     display: flex;
     justify-content: space-between;
   }
+
+  .field.json {
+    height: 100%;
+  }
+  .field.json textarea {
+    resize: none;
+  }
 </style>
diff --git a/frontend/src/organisms/connection/collection/remove.svelte b/frontend/src/organisms/connection/collection/remove.svelte
index c54e0c1..c83195a 100644
--- a/frontend/src/organisms/connection/collection/remove.svelte
+++ b/frontend/src/organisms/connection/collection/remove.svelte
@@ -1,5 +1,5 @@
 <script>
-  import CodeExample from '$components/code-example.svelte';
+  // import CodeExample from '$components/code-example.svelte';
   import Icon from '$components/icon.svelte';
   import input from '$lib/actions/input';
   import { RemoveItems } from '$wails/go/app/App';
@@ -17,15 +17,7 @@
 </script>
 
 <form on:submit|preventDefault={removeItems}>
-  <div class="options">
-    <CodeExample {code} />
-    <label class="field">
-      <span class="label">Many</span>
-      <span class="checkbox">
-        <input type="checkbox" bind:checked={many} />
-      </span>
-    </label>
-  </div>
+  <!-- <CodeExample {code} /> -->
 
   <label class="field">
     <textarea
@@ -38,35 +30,38 @@
     ></textarea>
   </label>
 
-  <div class="flex">
-    <div>
-      {#key result}
-        {#if typeof result === 'number'}
-          <span class="flash-green">Removed {result} item{result === 1 ? '' : 's'}</span>
-        {/if}
-      {/key}
-    </div>
+  <div class="actions">
     <button type="submit" class="btn danger">
       <Icon name="-" /> Remove
     </button>
+
+    <label class="field many">
+      <span class="label">Many</span>
+      <span class="checkbox">
+        <input type="checkbox" bind:checked={many} />
+      </span>
+    </label>
+
+    {#key result}
+      {#if typeof result === 'number'}
+        <span class="flash-green">Removed {result} item{result === 1 ? '' : 's'}</span>
+      {/if}
+    {/key}
   </div>
 </form>
 
 <style>
   form {
     display: grid;
-    grid-template-rows: auto 1fr auto;
+    grid-template-rows: 1fr auto;
     gap: 0.5rem;
   }
 
-  .options {
-    display: grid;
-    gap: 0.5rem;
-    grid-template: 1fr / 1fr auto;
+  .many {
+    display: inline-flex;
   }
 
-  .flex {
-    display: flex;
-    justify-content: space-between;
+  textarea {
+    resize: none;
   }
 </style>
diff --git a/frontend/src/organisms/connection/collection/stats.svelte b/frontend/src/organisms/connection/collection/stats.svelte
index ccc276c..a74472a 100644
--- a/frontend/src/organisms/connection/collection/stats.svelte
+++ b/frontend/src/organisms/connection/collection/stats.svelte
@@ -1,12 +1,12 @@
 <script>
-  import CodeExample from '$components/code-example.svelte';
+  // import CodeExample from '$components/code-example.svelte';
   import ObjectGrid from '$components/objectgrid.svelte';
 
   export let collection;
 </script>
 
 <div class="stats">
-  <CodeExample code="db.stats()" />
+  <!-- <CodeExample code="db.stats()" /> -->
 
   <div class="grid">
     <ObjectGrid data={collection.stats} />
@@ -17,7 +17,7 @@
   .stats {
     display: grid;
     gap: 0.5rem;
-    grid-template: auto 1fr / 1fr;
+    grid-template: auto / 1fr;
   }
 
   .stats .grid {
diff --git a/frontend/src/organisms/connection/collection/update.svelte b/frontend/src/organisms/connection/collection/update.svelte
index ad68597..30a5a9e 100644
--- a/frontend/src/organisms/connection/collection/update.svelte
+++ b/frontend/src/organisms/connection/collection/update.svelte
@@ -1,45 +1,31 @@
 <script>
-  import CodeExample from '$components/code-example.svelte';
+  // import CodeExample from '$components/code-example.svelte';
   import Icon from '$components/icon.svelte';
   import input from '$lib/actions/input';
+  import { atomicUpdateOperators } from '$lib/mongo';
+  import { deepClone } from '$lib/objects';
+  import { convertLooseJson, jsonLooseParse } from '$lib/strings';
   import { UpdateItems } from '$wails/go/app/App';
 
   export let collection = {};
 
-  const atomicUpdateOperators = {
-    'Fields': {
-      $currentDate: 'Current Date',
-      $inc: 'Increment',
-      $min: 'Min',
-      $max: 'Max',
-      $mul: 'Multiply',
-      $rename: 'Rename',
-      $set: 'Set',
-      $setOnInsert: 'Set on Insert',
-      $unset: 'Unset',
-    },
-    'Array': {
-      $addToSet: 'Add to Set',
-      $pop: 'Pop',
-      $pull: 'Pull',
-      $push: 'Push',
-      $pullAll: 'Push All',
-    },
-    'Modifiers': {
-      $each: 'Each',
-      $position: 'Position',
-      $slice: 'Slice',
-      $sort: 'Sort',
-    },
-    'Bitwise': {
-      $bit: 'Bit',
-    },
-  };
   const allOperators = Object.values(atomicUpdateOperators).map(Object.keys).flat();
-
   const form = { query: '{}', parameters: [ { type: '$set' } ] };
   let updatedCount;
   $: code = buildCode(form);
+  $: invalid = !form.query || form.parameters?.some(param => {
+    if (!param.value) {
+      return true;
+    }
+
+    try {
+      jsonLooseParse(param.value);
+      return false;
+    }
+    catch {
+      return true;
+    }
+  });
 
   function buildCode(form) {
     let operation = '{ ' + form.parameters.filter(p => p.type).map(p => `${p.type}: ${p.value || '{}'}`).join(', ') + ' }';
@@ -58,7 +44,10 @@
   }
 
   async function submitQuery() {
-    updatedCount = await UpdateItems(collection.hostKey, collection.dbKey, collection.key, JSON.stringify(form));
+    const f = deepClone(form);
+    f.query = convertLooseJson(f.query);
+    f.parameters = f.parameters.map(param => ({ ...param, value: convertLooseJson(param.value) }));
+    updatedCount = await UpdateItems(collection.hostKey, collection.dbKey, collection.key, JSON.stringify(f));
   }
 
   function removeParam(index) {
@@ -92,7 +81,7 @@
 </script>
 
 <form class="update" on:submit|preventDefault={submitQuery}>
-  <CodeExample language="json" {code} />
+  <!-- <CodeExample language="json" {code} /> -->
 
   <div class="options">
     <label class="field">
@@ -117,7 +106,7 @@
       {/if}
     {/key}
 
-    <button class="btn" type="submit">
+    <button class="btn" type="submit" disabled={invalid}>
       <Icon name="check" /> Update
     </button>
   </div>
@@ -135,7 +124,7 @@
             {#each Object.entries(atomicUpdateOperators) as [groupName, options]}
               <optgroup label={groupName}>
                 {#each Object.entries(options) as [key, label]}
-                  <option value={key} disabled={form.parameters.some(p => p.type === key)}>
+                  <option value={key} disabled={form.parameters.some(p => p.type === key) && (key !== param.type)}>
                     {label}
                   </option>
                 {/each}
@@ -145,14 +134,13 @@
           <input type="text" class="code" bind:value={param.value} placeholder={'{}'} use:input={{ type: 'json' }} />
         </label>
 
-        <label class="field">
-          <button class="btn" disabled={form.parameters.length >= allOperators.length} on:click={() => addParameter()} type="button">
-            <Icon name="+" />
-          </button>
-          <button class="btn" disabled={form.parameters.length < 2} on:click={() => removeParam(index)} type="button">
-            <Icon name="-" />
-          </button>
-        </label>
+        <button class="btn" disabled={form.parameters.length >= allOperators.length} on:click={() => addParameter()} type="button">
+          <Icon name="+" />
+        </button>
+
+        <button class="btn" disabled={form.parameters.length < 2} on:click={() => removeParam(index)} type="button">
+          <Icon name="-" />
+        </button>
       </fieldset>
     {/each}
   </fieldset>
@@ -162,7 +150,7 @@
   .update {
     display: grid;
     gap: 0.5rem;
-    grid-template: auto auto auto 1fr / 1fr;
+    grid-template: auto auto 1fr / 1fr;
   }
 
   .options {
@@ -181,7 +169,7 @@
   }
   .parameter {
     display: grid;
-    grid-template: 1fr / 1fr auto;
+    grid-template: 1fr / 1fr auto auto;
     gap: 0.5rem;
   }
 
diff --git a/frontend/wailsjs/go/app/App.d.ts b/frontend/wailsjs/go/app/App.d.ts
index 311fc8f..eb944ee 100755
--- a/frontend/wailsjs/go/app/App.d.ts
+++ b/frontend/wailsjs/go/app/App.d.ts
@@ -41,6 +41,8 @@ export function OpenDirectory(arg1:string,arg2:string):Promise<string>;
 
 export function PerformExport(arg1:string):Promise<boolean>;
 
+export function PurgeLogDirectory():Promise<void>;
+
 export function RemoveHost(arg1:string):Promise<void>;
 
 export function RemoveItemById(arg1:string,arg2:string,arg3:string,arg4:string):Promise<boolean>;
diff --git a/frontend/wailsjs/go/app/App.js b/frontend/wailsjs/go/app/App.js
index 362752b..cf90ead 100755
--- a/frontend/wailsjs/go/app/App.js
+++ b/frontend/wailsjs/go/app/App.js
@@ -74,6 +74,10 @@ export function PerformExport(arg1) {
   return window['go']['app']['App']['PerformExport'](arg1);
 }
 
+export function PurgeLogDirectory() {
+  return window['go']['app']['App']['PurgeLogDirectory']();
+}
+
 export function RemoveHost(arg1) {
   return window['go']['app']['App']['RemoveHost'](arg1);
 }
diff --git a/internal/app/app.go b/internal/app/app.go
index 80557b1..4101c86 100644
--- a/internal/app/app.go
+++ b/internal/app/app.go
@@ -86,6 +86,34 @@ func (a *App) Environment() EnvironmentInfo {
 	return a.Env
 }
 
+func (a *App) PurgeLogDirectory() {
+	sure, _ := wailsRuntime.MessageDialog(a.ctx, wailsRuntime.MessageDialogOptions{
+		Title:         "Are you sure you want to remove all logfiles?",
+		Buttons:       []string{"Yes", "No"},
+		DefaultButton: "Yes",
+		CancelButton:  "No",
+		Type:          wailsRuntime.QuestionDialog,
+	})
+
+	if sure != "Yes" {
+		return
+	}
+
+	err := os.RemoveAll(a.Env.LogDirectory)
+	if err == nil {
+		wailsRuntime.MessageDialog(a.ctx, wailsRuntime.MessageDialogOptions{
+			Title: "Successfully purged log directory.",
+			Type:  wailsRuntime.InfoDialog,
+		})
+	} else {
+		wailsRuntime.MessageDialog(a.ctx, wailsRuntime.MessageDialogOptions{
+			Title:   "Encountered an error while purging log directory.",
+			Message: err.Error(),
+			Type:    wailsRuntime.WarningDialog,
+		})
+	}
+}
+
 func menuEventEmitter(a *App, eventName string, data ...interface{}) func(cd *menu.CallbackData) {
 	return func(cd *menu.CallbackData) {
 		wailsRuntime.EventsEmit(a.ctx, eventName, data...)
@@ -99,6 +127,9 @@ func (a *App) Menu() *menu.Menu {
 	aboutMenu.AddText("About…", nil, menuEventEmitter(a, "OpenAboutModal"))
 	aboutMenu.AddText("Prefrences…", keys.CmdOrCtrl(","), menuEventEmitter(a, "OpenPrefrences"))
 	aboutMenu.AddSeparator()
+	aboutMenu.AddText("Open log directory…", nil, func(cd *menu.CallbackData) { open_file.Reveal(a.Env.LogDirectory) })
+	aboutMenu.AddText("Purge logs", nil, func(cd *menu.CallbackData) { a.PurgeLogDirectory() })
+	aboutMenu.AddSeparator()
 	aboutMenu.AddText("Quit", keys.CmdOrCtrl("q"), func(cd *menu.CallbackData) { wailsRuntime.Quit(a.ctx) })
 
 	if runtime.GOOS == "darwin" {
@@ -123,8 +154,6 @@ func (a *App) Menu() *menu.Menu {
 
 	helpMenu := appMenu.AddSubmenu("Help")
 	helpMenu.AddText("User guide", nil, func(cd *menu.CallbackData) { wailsRuntime.BrowserOpenURL(a.ctx, "") })
-	helpMenu.AddSeparator()
-	helpMenu.AddText("Open log directory", nil, func(cd *menu.CallbackData) { open_file.Reveal(a.Env.LogDirectory) })
 
 	return appMenu
 }
diff --git a/internal/app/collection.go b/internal/app/collection.go
index e36af37..bf6bfaa 100644
--- a/internal/app/collection.go
+++ b/internal/app/collection.go
@@ -64,6 +64,7 @@ func (a *App) TruncateCollection(hostKey, dbKey, collKey string) bool {
 		Buttons:       []string{"Yes", "No"},
 		DefaultButton: "Yes",
 		CancelButton:  "No",
+		Type:          runtime.WarningDialog,
 	})
 	if sure != "Yes" {
 		return false
@@ -97,6 +98,7 @@ func (a *App) DropCollection(hostKey, dbKey, collKey string) bool {
 		Buttons:       []string{"Yes", "No"},
 		DefaultButton: "Yes",
 		CancelButton:  "No",
+		Type:          runtime.WarningDialog,
 	})
 	if sure != "Yes" {
 		return false
diff --git a/internal/app/collection_remove.go b/internal/app/collection_remove.go
index 7715add..be81aad 100644
--- a/internal/app/collection_remove.go
+++ b/internal/app/collection_remove.go
@@ -20,6 +20,7 @@ func (a *App) RemoveItems(hostKey, dbKey, collKey, jsonData string, many bool) i
 			Buttons:       []string{"Yes", "No"},
 			DefaultButton: "Yes",
 			CancelButton:  "No",
+			Type:          runtime.WarningDialog,
 		})
 		if sure != "Yes" {
 			return 0
diff --git a/internal/app/collection_update.go b/internal/app/collection_update.go
index 2d167aa..ef47143 100644
--- a/internal/app/collection_update.go
+++ b/internal/app/collection_update.go
@@ -44,11 +44,12 @@ func (a *App) UpdateItems(hostKey, dbKey, collKey string, formJson string) int64
 
 	err = bson.UnmarshalExtJSON([]byte(form.Query), true, &query)
 	if err != nil {
-		runtime.LogError(a.ctx, "Invalid update query:")
-		runtime.LogError(a.ctx, err.Error())
+		runtime.LogWarning(a.ctx, "Invalid update query:")
+		runtime.LogWarning(a.ctx, form.Query)
+		runtime.LogWarning(a.ctx, err.Error())
 		runtime.MessageDialog(a.ctx, runtime.MessageDialogOptions{
 			Type:    runtime.ErrorDialog,
-			Title:   "Invalid query",
+			Title:   "Invalid update query",
 			Message: err.Error(),
 		})
 		return 0
@@ -60,11 +61,12 @@ func (a *App) UpdateItems(hostKey, dbKey, collKey string, formJson string) int64
 		if err == nil {
 			update[param.Type] = unmarshalled
 		} else {
-			runtime.LogError(a.ctx, "Invalid update query:")
-			runtime.LogError(a.ctx, err.Error())
+			runtime.LogWarning(a.ctx, "Invalid update parameter value:")
+			runtime.LogWarning(a.ctx, param.Value)
+			runtime.LogWarning(a.ctx, err.Error())
 			runtime.MessageDialog(a.ctx, runtime.MessageDialogOptions{
 				Type:    runtime.ErrorDialog,
-				Title:   "Invalid query",
+				Title:   "Invalid update query",
 				Message: err.Error(),
 			})
 			return 0
diff --git a/internal/app/database.go b/internal/app/database.go
index a23ae05..b04369d 100644
--- a/internal/app/database.go
+++ b/internal/app/database.go
@@ -34,6 +34,7 @@ func (a *App) DropDatabase(hostKey, dbKey string) bool {
 		Buttons:       []string{"Yes", "No"},
 		DefaultButton: "Yes",
 		CancelButton:  "No",
+		Type:          runtime.WarningDialog,
 	})
 	if sure != "Yes" {
 		return false
diff --git a/internal/app/hosts.go b/internal/app/hosts.go
index 0d99a88..cdd0959 100644
--- a/internal/app/hosts.go
+++ b/internal/app/hosts.go
@@ -150,6 +150,7 @@ func (a *App) RemoveHost(key string) error {
 		Buttons:       []string{"Yes", "No"},
 		DefaultButton: "Yes",
 		CancelButton:  "No",
+		Type:          runtime.WarningDialog,
 	})
 	if sure != "Yes" {
 		return errors.New("operation aborted")
diff --git a/internal/app/views.go b/internal/app/views.go
index 15be34b..9645103 100644
--- a/internal/app/views.go
+++ b/internal/app/views.go
@@ -135,6 +135,7 @@ func (a *App) RemoveView(viewKey string) error {
 		Buttons:       []string{"Yes", "No"},
 		DefaultButton: "Yes",
 		CancelButton:  "No",
+		Type:          runtime.WarningDialog,
 	})
 	if sure != "Yes" {
 		return errors.New("operation aborted")