diff --git a/.gitignore b/.gitignore
index 12ebec1c2..6256bb889 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,3 +24,6 @@ sw.*
 .idea/*
 tailwind.compiled.css
 tailwind.config.js
+dev.sh
+docs-backend-guide.md
+docs-enhancements.md
diff --git a/client/components/modals/EditSeriesInputInnerModal.vue b/client/components/modals/EditSeriesInputInnerModal.vue
index bd568321f..8d749f5ef 100644
--- a/client/components/modals/EditSeriesInputInnerModal.vue
+++ b/client/components/modals/EditSeriesInputInnerModal.vue
@@ -14,6 +14,16 @@
               <ui-text-input-with-label ref="sequenceInput" v-model="selectedSeries.sequence" :label="$strings.LabelSequence" />
             </div>
           </div>
+          <div class="flex mt-2">
+            <div class="grow p-1">
+              <div class="flex items-center">
+                <ui-asin-input ref="asinInput" v-model="seriesAsin" :label="$strings.LabelSeriesAsin" :extracted-message="$strings.MessageAsinExtractedFromUrl" :valid-message="$strings.MessageValidAsinFormat" :invalid-message="$strings.MessageInvalidAsin" class="flex-grow" />
+                <ui-tooltip :text="$strings.MessageAsinCheck" direction="top" class="ml-2 mt-5">
+                  <span class="material-symbols text-gray-400 hover:text-white cursor-help" style="font-size: 1.1rem">help</span>
+                </ui-tooltip>
+              </div>
+            </div>
+          </div>
           <div v-if="error" class="text-error text-sm mt-2 p-1">{{ error }}</div>
           <div class="flex justify-end mt-2 p-1">
             <ui-btn type="submit">{{ $strings.ButtonSubmit }}</ui-btn>
@@ -45,7 +55,8 @@ export default {
     return {
       el: null,
       content: null,
-      error: null
+      error: null,
+      seriesAsin: ''
     }
   },
   watch: {
@@ -55,6 +66,21 @@ export default {
       } else {
         this.setHide()
       }
+    },
+    selectedSeries: {
+      handler(newVal) {
+        if (!this.show) return
+        this.seriesAsin = newVal?.audibleSeriesAsin || ''
+      },
+      deep: true
+    },
+    // Watch for series name changes to auto-populate ASIN when selecting existing series
+    'selectedSeries.name': {
+      async handler(newName) {
+        if (!this.show || !newName || !this.isNewSeries) return
+        // Check if this matches an existing series in the library
+        await this.fetchSeriesAsinByName(newName)
+      }
     }
   },
   computed: {
@@ -77,6 +103,22 @@ export default {
         this.$refs.sequenceInput.setFocus()
       }
     },
+    async fetchSeriesAsinByName(seriesName) {
+      try {
+        const libraryId = this.$store.state.libraries.currentLibraryId
+        const series = this.$store.state.libraries.filterData?.series || []
+        const matchingSeries = series.find((se) => se.name.toLowerCase() === seriesName.toLowerCase())
+        if (!matchingSeries) return
+
+        // Fetch full series data to get ASIN
+        const fullSeries = await this.$axios.$get(`/api/libraries/${libraryId}/series/${matchingSeries.id}`)
+        if (fullSeries?.audibleSeriesAsin) {
+          this.seriesAsin = fullSeries.audibleSeriesAsin
+        }
+      } catch (error) {
+        console.error('Failed to fetch series ASIN:', error)
+      }
+    },
     setInputFocus() {
       if (this.isNewSeries) {
         // Focus on series input if new series
@@ -102,7 +144,18 @@ export default {
         return
       }
 
-      this.$emit('submit')
+      // Validate ASIN format if provided
+      if (this.seriesAsin && this.seriesAsin.trim()) {
+        const asin = this.seriesAsin.trim().toUpperCase()
+        if (!/^[A-Z0-9]{10}$/.test(asin)) {
+          this.error = this.$strings.MessageInvalidAsin
+          return
+        }
+        this.seriesAsin = asin
+      }
+
+      // Pass ASIN along with submit
+      this.$emit('submit', { audibleSeriesAsin: this.seriesAsin || null })
     },
     clickClose() {
       this.show = false
@@ -114,6 +167,9 @@ export default {
     },
     setShow() {
       this.error = null
+      // Load existing ASIN from the series if it exists
+      this.seriesAsin = this.selectedSeries?.audibleSeriesAsin || ''
+
       if (!this.el || !this.content) {
         this.init()
       }
diff --git a/client/components/ui/AsinInput.vue b/client/components/ui/AsinInput.vue
new file mode 100644
index 000000000..6041e1a25
--- /dev/null
+++ b/client/components/ui/AsinInput.vue
@@ -0,0 +1,155 @@
+<template>
+  <div class="w-full">
+    <label v-if="label" class="px-1 text-sm font-semibold">{{ label }}</label>
+    <div class="relative">
+      <input ref="input" :value="value" type="text" :placeholder="placeholder" dir="auto" class="rounded-sm bg-primary text-gray-200 focus:bg-bg focus:outline-hidden border h-full w-full px-3 py-2 focus:border-gray-300 border-gray-600" @input="onInput" @paste="onPaste" @blur="onBlur" />
+    </div>
+    <p v-if="extracted" class="text-success text-xs mt-1 px-1">
+      <span class="material-symbols text-xs align-middle" style="font-size: 0.875rem">check_circle</span>
+      {{ extractedMessage }}
+    </p>
+    <p v-else-if="value && isValid" class="text-green-500 text-xs mt-1 px-1">
+      <span class="material-symbols text-xs align-middle" style="font-size: 0.875rem">check</span>
+      {{ validMessage }}
+    </p>
+    <p v-else-if="value && !isValid" class="text-red-500 text-xs mt-1 px-1">
+      <span class="material-symbols text-xs align-middle" style="font-size: 0.875rem">error</span>
+      {{ invalidMessage }}
+    </p>
+  </div>
+</template>
+
+<script>
+/**
+ * Specialized input component for Audible ASIN fields.
+ * - Validates 10 alphanumeric characters
+ * - Extracts ASIN from pasted Audible URLs
+ * - Shows validation feedback
+ */
+export default {
+  props: {
+    value: {
+      type: String,
+      default: ''
+    },
+    label: {
+      type: String,
+      default: ''
+    },
+    placeholder: {
+      type: String,
+      default: 'B08G9PRS1K or paste Audible URL'
+    },
+    extractedMessage: {
+      type: String,
+      default: 'ASIN extracted from URL'
+    },
+    validMessage: {
+      type: String,
+      default: 'Valid ASIN format'
+    },
+    invalidMessage: {
+      type: String,
+      default: 'Invalid ASIN (must be exactly 10 alphanumeric characters)'
+    }
+  },
+  data() {
+    return {
+      extracted: false
+    }
+  },
+  computed: {
+    isValid() {
+      if (!this.value) return false
+      return /^[A-Z0-9]{10}$/i.test(this.value)
+    }
+  },
+  watch: {
+    value(newVal, oldVal) {
+      // Reset extracted flag when value changes externally
+      if (newVal !== oldVal) {
+        this.extracted = false
+      }
+    }
+  },
+  methods: {
+    /**
+     * Extract ASIN from Audible URL or return null
+     */
+    extractAsinFromUrl(input) {
+      if (!input) return null
+
+      // If already looks like ASIN, return as-is (uppercase)
+      if (/^[A-Z0-9]{10}$/i.test(input)) {
+        return input.toUpperCase()
+      }
+
+      // Try to extract from URL - handles:
+      // /series/B08WJ59784 (ASIN directly after /series/)
+      // /series/Series-Name/B08WJ59784 (ASIN after series name)
+      const urlMatch = input.match(/\/series\/(?:[^/]+\/)?([A-Z0-9]{10})(?:[/?#]|$)/i)
+      if (urlMatch) {
+        return urlMatch[1].toUpperCase()
+      }
+
+      // Fallback: look for B0-style ASIN anywhere (common for Audible)
+      const b0Match = input.match(/\b(B0[A-Z0-9]{8})\b/i)
+      if (b0Match) {
+        return b0Match[1].toUpperCase()
+      }
+
+      return null
+    },
+
+    onInput(e) {
+      const val = (e?.target?.value ?? '').trim()
+      this.extracted = false
+      this.$emit('input', val)
+    },
+
+    onPaste(e) {
+      e.preventDefault()
+      const pasted = (e.clipboardData?.getData('text') ?? '').trim()
+      if (!pasted) return
+
+      const extractedAsin = this.extractAsinFromUrl(pasted)
+      const finalVal = extractedAsin || pasted
+
+      this.extracted = !!(extractedAsin && extractedAsin !== pasted)
+      this.$emit('input', finalVal)
+
+      // Sync the input element
+      if (e.target) {
+        e.target.value = finalVal
+      }
+    },
+
+    onBlur(e) {
+      const val = (e?.target?.value ?? '').trim()
+      if (!val) {
+        this.extracted = false
+        this.$emit('input', '')
+        return
+      }
+
+      const extractedAsin = this.extractAsinFromUrl(val)
+      if (extractedAsin && extractedAsin !== val) {
+        this.extracted = true
+        this.$emit('input', extractedAsin)
+        if (e.target) e.target.value = extractedAsin
+      } else {
+        this.$emit('input', val)
+      }
+      this.$emit('blur')
+    },
+
+    setFocus() {
+      if (this.$refs.input) this.$refs.input.focus()
+    },
+
+    blur() {
+      if (this.$refs.input) this.$refs.input.blur()
+    }
+  }
+}
+</script>
diff --git a/client/components/widgets/SeriesInputWidget.vue b/client/components/widgets/SeriesInputWidget.vue
index 3dab0605a..25c1e9b29 100644
--- a/client/components/widgets/SeriesInputWidget.vue
+++ b/client/components/widgets/SeriesInputWidget.vue
@@ -56,12 +56,35 @@ export default {
       var _series = this.seriesItems.find((se) => se.id === series.id)
       if (!_series) return
 
-      this.selectedSeries = {
-        ..._series
+      // If this is an existing series (not new), fetch the full series data to get ASIN
+      if (!_series.id.startsWith('new-')) {
+        this.fetchSeriesData(_series.id).then((fullSeries) => {
+          this.selectedSeries = {
+            ..._series,
+            audibleSeriesAsin: fullSeries?.audibleSeriesAsin || ''
+          }
+          this.originalSeriesSequence = _series.sequence
+          this.showSeriesForm = true
+        })
+      } else {
+        this.selectedSeries = {
+          ..._series,
+          // Map 'asin' from match data to 'audibleSeriesAsin' for the edit form
+          audibleSeriesAsin: _series.asin || _series.audibleSeriesAsin || ''
+        }
+        this.originalSeriesSequence = _series.sequence
+        this.showSeriesForm = true
+      }
+    },
+    async fetchSeriesData(seriesId) {
+      try {
+        const libraryId = this.$store.state.libraries.currentLibraryId
+        const series = await this.$axios.$get(`/api/libraries/${libraryId}/series/${seriesId}`)
+        return series
+      } catch (error) {
+        console.error('Failed to fetch series data:', error)
+        return null
       }
-
-      this.originalSeriesSequence = _series.sequence
-      this.showSeriesForm = true
     },
     addNewSeries() {
       this.selectedSeries = {
@@ -73,7 +96,7 @@ export default {
       this.originalSeriesSequence = null
       this.showSeriesForm = true
     },
-    submitSeriesForm() {
+    submitSeriesForm(formData) {
       if (!this.selectedSeries.name) {
         this.$toast.error('Must enter a series')
         return
@@ -96,6 +119,11 @@ export default {
       var selectedSeriesCopy = { ...this.selectedSeries }
       selectedSeriesCopy.displayName = selectedSeriesCopy.sequence ? `${selectedSeriesCopy.name} #${selectedSeriesCopy.sequence}` : selectedSeriesCopy.name
 
+      // Store ASIN for later update (after book is saved and series exists)
+      if (formData?.audibleSeriesAsin !== undefined) {
+        selectedSeriesCopy.audibleSeriesAsin = formData.audibleSeriesAsin
+      }
+
       var seriesCopy = this.seriesItems.map((v) => ({ ...v }))
       if (existingSeriesIndex >= 0) {
         seriesCopy.splice(existingSeriesIndex, 1, selectedSeriesCopy)
@@ -105,7 +133,28 @@ export default {
         this.seriesItems = seriesCopy
       }
 
+      // If this is an existing series (not new), update the ASIN immediately
+      if (!this.selectedSeries.id.startsWith('new-') && formData?.audibleSeriesAsin !== undefined) {
+        this.updateSeriesAsin(this.selectedSeries.id, formData.audibleSeriesAsin)
+      }
+
       this.showSeriesForm = false
+    },
+    async updateSeriesAsin(seriesId, asin) {
+      // Skip API call if ASIN is empty - backend safeguard prevents clearing anyway,
+      // but this avoids unnecessary network requests
+      if (!asin) {
+        return
+      }
+      try {
+        await this.$axios.$patch(`/api/series/${seriesId}`, {
+          audibleSeriesAsin: asin
+        })
+        this.$toast.success(this.$strings.ToastSeriesUpdateSuccess)
+      } catch (error) {
+        console.error('Failed to update series ASIN:', error)
+        this.$toast.error(this.$strings.ToastSeriesUpdateFailed)
+      }
     }
   }
 }
diff --git a/client/strings/en-us.json b/client/strings/en-us.json
index fb2bcb281..de550bba6 100644
--- a/client/strings/en-us.json
+++ b/client/strings/en-us.json
@@ -576,6 +576,7 @@
   "LabelSequence": "Sequence",
   "LabelSerial": "Serial",
   "LabelSeries": "Series",
+  "LabelSeriesAsin": "Audible Series ASIN",
   "LabelSeriesName": "Series Name",
   "LabelSeriesProgress": "Series Progress",
   "LabelServerLogLevel": "Server Log Level",
@@ -737,6 +738,7 @@
   "MessageAddToPlayerQueue": "Add to player queue",
   "MessageAppriseDescription": "To use this feature you will need to have an instance of <a href=\"https://github.com/caronc/apprise-api\" target=\"_blank\">Apprise API</a> running or an api that will handle those same requests. <br />The Apprise API Url should be the full URL path to send the notification, e.g., if your API instance is served at <code>http://192.168.1.1:8337</code> then you would put <code>http://192.168.1.1:8337/notify</code>.",
   "MessageAsinCheck": "Ensure you are using the ASIN from the correct Audible region, not Amazon.",
+  "MessageAsinExtractedFromUrl": "ASIN extracted from URL",
   "MessageAuthenticationLegacyTokenWarning": "Legacy API tokens will be removed in the future. Use <a href=\"/config/api-keys\">API Keys</a> instead.",
   "MessageAuthenticationOIDCChangesRestart": "Restart your server after saving to apply OIDC changes.",
   "MessageAuthenticationSecurityMessage": "Authentication has been improved for security. All users are required to re-login.",
@@ -938,6 +940,7 @@
   "MessageUploaderItemFailed": "Failed to upload",
   "MessageUploaderItemSuccess": "Successfully Uploaded!",
   "MessageUploading": "Uploading...",
+  "MessageValidAsinFormat": "Valid ASIN format",
   "MessageValidCronExpression": "Valid cron expression",
   "MessageWatcherIsDisabledGlobally": "Watcher is disabled globally in server settings",
   "MessageXLibraryIsEmpty": "{0} Library is empty!",
diff --git a/docs/objects/entities/Series.yaml b/docs/objects/entities/Series.yaml
index ef35a5b35..9f671dc90 100644
--- a/docs/objects/entities/Series.yaml
+++ b/docs/objects/entities/Series.yaml
@@ -14,6 +14,12 @@ components:
       type: string
       nullable: true
       example: The Sword of Truth is a series of twenty one epic fantasy novels written by Terry Goodkind.
+    audibleSeriesAsin:
+      description: The Audible ASIN (Amazon Standard Identification Number) for this series. Used for metadata lookups. Will be null if not set.
+      type: string
+      nullable: true
+      pattern: '^[A-Z0-9]{10}$'
+      example: B08G9PRS1K
     sequence:
       description: The position in the series the book is.
       type: string
@@ -45,6 +51,8 @@ components:
           $ref: '#/components/schemas/seriesName'
         description:
           $ref: '#/components/schemas/seriesDescription'
+        audibleSeriesAsin:
+          $ref: '#/components/schemas/audibleSeriesAsin'
         addedAt:
           $ref: '../../schemas.yaml#/components/schemas/addedAt'
         updatedAt:
@@ -73,6 +81,10 @@ components:
           $ref: '#/components/schemas/seriesId'
         name:
           $ref: '#/components/schemas/seriesName'
+        description:
+          $ref: '#/components/schemas/seriesDescription'
+        audibleSeriesAsin:
+          $ref: '#/components/schemas/audibleSeriesAsin'
         addedAt:
           $ref: '../../schemas.yaml#/components/schemas/addedAt'
         nameIgnorePrefix:
diff --git a/package-lock.json b/package-lock.json
index 08707893d..e07fba51d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "audiobookshelf",
-  "version": "2.32.1",
+  "version": "2.33.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "audiobookshelf",
-      "version": "2.32.1",
+      "version": "2.33.0",
       "license": "GPL-3.0",
       "dependencies": {
         "axios": "^0.27.2",
diff --git a/package.json b/package.json
index 3ee3fb391..3108b5170 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "audiobookshelf",
-  "version": "2.32.1",
+  "version": "2.33.0",
   "buildNumber": 1,
   "description": "Self-hosted audiobook and podcast server",
   "main": "index.js",
diff --git a/server/controllers/SeriesController.js b/server/controllers/SeriesController.js
index 21c93f332..08100596d 100644
--- a/server/controllers/SeriesController.js
+++ b/server/controllers/SeriesController.js
@@ -62,17 +62,37 @@ class SeriesController {
   }
 
   /**
-   * TODO: Currently unused in the client, should check for duplicate name
+   * PATCH /api/series/:id
+   * Update series metadata (name, description, audibleSeriesAsin)
+   *
+   * TODO: should check for duplicate name
    *
    * @param {SeriesControllerRequest} req
    * @param {Response} res
    */
   async update(req, res) {
-    const keysToUpdate = ['name', 'description']
+    const keysToUpdate = ['name', 'description', 'audibleSeriesAsin']
     const payload = {}
     for (const key of keysToUpdate) {
-      if (req.body[key] !== undefined && typeof req.body[key] === 'string') {
-        payload[key] = req.body[key]
+      if (req.body[key] !== undefined) {
+        const value = req.body[key]
+
+        // audibleSeriesAsin accepts null, empty string, or string
+        // Model hook will normalize (extract from URL, uppercase) and validate
+        // SAFEGUARD: null/empty values will NOT clear an existing ASIN (prevents accidental data loss)
+        if (key === 'audibleSeriesAsin') {
+          if (value === null || value === '') {
+            // Skip adding to payload if empty - existing ASIN will be preserved
+            // To explicitly clear, user must delete/recreate series or use a special endpoint
+            continue
+          } else if (typeof value === 'string') {
+            payload[key] = value // Model hook will normalize & validate
+          } else {
+            return res.status(400).send('audibleSeriesAsin must be a string or null')
+          }
+        } else if (typeof value === 'string') {
+          payload[key] = value
+        }
       }
     }
     if (!Object.keys(payload).length) {
@@ -80,7 +100,15 @@ class SeriesController {
     }
     req.series.set(payload)
     if (req.series.changed()) {
-      await req.series.save()
+      try {
+        await req.series.save()
+      } catch (error) {
+        // Handle model-level validation errors (e.g., invalid ASIN format)
+        if (error.message?.includes('ASIN') || error.message?.includes('audibleSeriesAsin')) {
+          return res.status(400).send(error.message)
+        }
+        throw error // Re-throw unexpected errors
+      }
       SocketAuthority.emitter('series_updated', req.series.toOldJSON())
     }
     res.json(req.series.toOldJSON())