diff --git a/fileutils/file.go b/fileutils/file.go
index 1b1e6403..00549584 100644
--- a/fileutils/file.go
+++ b/fileutils/file.go
@@ -2,6 +2,7 @@ package fileutils
 
 import (
 	"io"
+	"os"
 	"path/filepath"
 
 	"github.com/spf13/afero"
@@ -25,7 +26,7 @@ func CopyFile(fs afero.Fs, source, dest string) error {
 	}
 
 	// Create the destination file.
-	dst, err := fs.Create(dest)
+	dst, err := fs.OpenFile(dest, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0775)
 	if err != nil {
 		return err
 	}
diff --git a/frontend/public/themes/dark.css b/frontend/public/themes/dark.css
index 978b4f0f..1ee5f1ac 100644
--- a/frontend/public/themes/dark.css
+++ b/frontend/public/themes/dark.css
@@ -1,7 +1,7 @@
 :root {
-  --background: #121212;
-  --surfacePrimary: #171819;
-  --surfaceSecondary: #212528;
+  --background: #141D24;
+  --surfacePrimary: #20292F;
+  --surfaceSecondary: #3A4147;
   --divider: rgba(255, 255, 255, 0.12);
   --icon: #ffffff;
   --textPrimary: rgba(255, 255, 255, 0.87);
@@ -16,7 +16,7 @@ body {
 #loading {
   background: var(--background);
 }
-#loading .spinner div {
+#loading .spinner div, #previewer .loading .spinner div {
   background: var(--icon);
 }
 
@@ -30,25 +30,34 @@ header {
 
 #search #input {
   background: var(--surfaceSecondary);
+  border-color: var(--surfacePrimary);
 }
-#search.active #input,
-#search.active .boxes {
+#search #input input::placeholder {
+  color: var(--textSecondary);
+}
+#search.active #input {
   background: var(--surfacePrimary);
 }
 #search.active input {
   color: var(--textPrimary);
 }
-#search.active #result {
+#search #result {
   background: var(--background);
   color: var(--textPrimary);
 }
-#search.active .boxes h3 {
+#search .boxes {
+  background: var(--surfaceSecondary);
+}
+#search .boxes h3 {
   color: var(--textPrimary);
 }
 
 .action {
   color: var(--textPrimary) !important;
 }
+.action:hover {
+  background-color: rgba(255, 255, 255, .1);
+}
 .action i {
   color: var(--icon) !important;
 }
@@ -93,6 +102,10 @@ nav > div {
   background: var(--background);
 }
 
+.message {
+  color: var(--textPrimary);
+}
+
 .card {
   background: var(--surfacePrimary);
   color: var(--textPrimary);
@@ -106,9 +119,23 @@ nav > div {
 .dashboard p label {
   color: var(--textPrimary);
 }
+.card#share ul li input,
+.card#share ul li select,
 .input {
   background: var(--surfaceSecondary);
   color: var(--textPrimary);
+  border: 1px solid rgba(255, 255, 255, 0.05);
+}
+.input:hover,
+.input:focus {
+  border-color: rgba(255, 255, 255, 0.15);
+}
+.input--red {
+  background: #73302D;
+}
+
+.input--green {
+  background: #147A41;
 }
 
 .dashboard #nav li,
@@ -119,10 +146,27 @@ nav > div {
   color: var(--textPrimary);
 }
 
+table th {
+  color: var(--textSecondary);
+}
+
+.file-list li:hover {
+  background: var(--surfaceSecondary);
+}
+.file-list li:before {
+  color: var(--textSecondary);
+}
+.file-list li[aria-selected=true]:before {
+  color: var(--icon);
+}
+
 .shell {
   background: var(--surfacePrimary);
   color: var(--textPrimary);
 }
+.shell__result {
+  border-top: 1px solid var(--divider);
+}
 
 #editor-container {
   background: var(--background);
@@ -146,3 +190,11 @@ nav > div {
     background: var(--surfaceSecondary) !important;
   }
 }
+
+.share__box, .share__box__download {
+  background: var(--surfaceSecondary) !important;
+  color: var(--textPrimary);
+}
+.share__box__download {
+  border-bottom-color: var(--divider);
+}
\ No newline at end of file
diff --git a/frontend/src/api/files.js b/frontend/src/api/files.js
index 602090c1..5942e71a 100644
--- a/frontend/src/api/files.js
+++ b/frontend/src/api/files.js
@@ -94,9 +94,6 @@ export async function post (url, content = '', overwrite = false, onupload) {
       request.upload.onprogress = onupload
     }
 
-    // Send a message to user before closing the tab during file upload
-    window.onbeforeunload = () => "Files are being uploaded."
-
     request.onload = () => {
       if (request.status === 200) {
         resolve(request.responseText)
@@ -112,29 +109,28 @@ export async function post (url, content = '', overwrite = false, onupload) {
     }
 
     request.send(content)
-    // Upload is done no more message before closing the tab 
-  }).finally(() => { window.onbeforeunload = null })
+  })
 }
 
-function moveCopy (items, copy = false) {
+function moveCopy (items, copy = false, overwrite = false, rename = false) {
   let promises = []
 
   for (let item of items) {
     const from = removePrefix(item.from)
     const to = encodeURIComponent(removePrefix(item.to))
-    const url = `${from}?action=${copy ? 'copy' : 'rename'}&destination=${to}`
+    const url = `${from}?action=${copy ? 'copy' : 'rename'}&destination=${to}&override=${overwrite}&rename=${rename}`
     promises.push(resourceAction(url, 'PATCH'))
   }
 
   return Promise.all(promises)
 }
 
-export function move (items) {
-  return moveCopy(items)
+export function move (items, overwrite = false, rename = false) {
+  return moveCopy(items, false, overwrite, rename)
 }
 
-export function copy (items) {
-  return moveCopy(items, true)
+export function copy (items, overwrite = false, rename = false) {
+  return moveCopy(items, true, overwrite, rename)
 }
 
 export async function checksum (url, algo) {
diff --git a/frontend/src/components/files/ExtendedImage.vue b/frontend/src/components/files/ExtendedImage.vue
index 2fa0f35e..aeb27981 100644
--- a/frontend/src/components/files/ExtendedImage.vue
+++ b/frontend/src/components/files/ExtendedImage.vue
@@ -10,10 +10,12 @@
     @mouseup="mouseUp"
     @wheel="wheelMove"
   >
-    <img :src="src" class="image-ex-img" ref="imgex" @load="setCenter">
+    <img :src="src" class="image-ex-img image-ex-img-center" ref="imgex" @load="onLoad">
   </div>
 </template>
 <script>
+import throttle from 'lodash.throttle'
+
 export default {
   props: {
     src: String,
@@ -50,7 +52,12 @@ export default {
       inDrag: false,
       lastTouchDistance: 0,
       moveDisabled: false,
-      disabledTimer: null
+      disabledTimer: null,
+      imageLoaded: false,
+      position: {
+        center: { x: 0, y: 0 },
+        relative: { x: 0, y: 0 }
+      }
     }
   },
   mounted() {
@@ -63,24 +70,47 @@ export default {
     if (getComputedStyle(container).height === "0px") {
       container.style.height = "100%"
     }
+
+    window.addEventListener('resize', this.onResize)
+  },
+  beforeDestroy () {
+    window.removeEventListener('resize', this.onResize)
+    document.removeEventListener('mouseup', this.onMouseUp)
   },
   methods: {
+    onLoad() {
+      let img = this.$refs.imgex
+
+      this.imageLoaded = true
+
+      if (img === undefined) {
+        return
+      }
+
+      img.classList.remove('image-ex-img-center')
+      this.setCenter()
+      img.classList.add('image-ex-img-ready')
+
+      document.addEventListener('mouseup', this.onMouseUp)
+    },
+    onMouseUp() {
+      this.inDrag = false
+    },
+    onResize: throttle(function() {
+      if (this.imageLoaded) {
+        this.setCenter()
+        this.doMove(this.position.relative.x, this.position.relative.y)
+      }
+    }, 100),
     setCenter() {
       let container = this.$refs.container
       let img = this.$refs.imgex
 
-      let rate = Math.min(
-        container.clientWidth / img.clientWidth,
-        container.clientHeight / img.clientHeight
-      )
-      if (!this.autofill && rate > 1) {
-        rate = 1
-      }
-      // height will be auto set
-      img.width = Math.floor(img.clientWidth * rate)
-      img.style.top = `${Math.floor((container.clientHeight - img.clientHeight) / 2)}px`
-      img.style.left = `${Math.floor((container.clientWidth - img.clientWidth) / 2)}px`
-      document.addEventListener('mouseup', () => this.inDrag = false )
+      this.position.center.x = Math.floor((container.clientWidth - img.clientWidth) / 2)
+      this.position.center.y = Math.floor((container.clientHeight - img.clientHeight) / 2)
+
+      img.style.left = this.position.center.x + 'px'
+      img.style.top = this.position.center.y + 'px'
     },
     mousedownStart(event) {
       this.lastX = null
@@ -159,8 +189,22 @@ export default {
     },
     doMove(x, y) {
       let style = this.$refs.imgex.style
-      style.left = `${this.pxStringToNumber(style.left) + x}px`
-      style.top = `${this.pxStringToNumber(style.top) + y}px`
+      let posX = this.pxStringToNumber(style.left) + x
+      let posY = this.pxStringToNumber(style.top) + y
+
+      style.left = posX + 'px'
+      style.top = posY + 'px'
+
+      this.position.relative.x =  Math.abs(this.position.center.x - posX)
+      this.position.relative.y =  Math.abs(this.position.center.y - posY)
+
+      if (posX < this.position.center.x) {
+        this.position.relative.x = this.position.relative.x * -1
+      }
+
+      if (posY < this.position.center.y) {
+        this.position.relative.y = this.position.relative.y * -1
+      }
     },
     wheelMove(event) {
       this.scale += (event.wheelDeltaY / 100) * this.zoomStep
@@ -185,9 +229,20 @@ export default {
 }
 
 .image-ex-img {
+  position: absolute;
+}
+
+.image-ex-img-center {
+  left: 50%;
+  top: 50%;
+  transform: translate(-50%, -50%);
+  position: absolute;
+  transition: none;
+}
+
+.image-ex-img-ready {
   left: 0;
   top: 0;
-  position: absolute;
   transition: transform 0.1s ease;
 }
 </style>
diff --git a/frontend/src/components/files/Listing.vue b/frontend/src/components/files/Listing.vue
index d34d2f10..6a4eefdb 100644
--- a/frontend/src/components/files/Listing.vue
+++ b/frontend/src/components/files/Listing.vue
@@ -248,7 +248,8 @@ export default {
 
       this.$store.commit('updateClipboard', {
         key: key,
-        items: items
+        items: items,
+        path: this.$route.path
       })
     },
     paste (event) {
@@ -261,23 +262,56 @@ export default {
       for (let item of this.$store.state.clipboard.items) {
         const from = item.from.endsWith('/') ? item.from.slice(0, -1) : item.from
         const to = this.$route.path + item.name
-        items.push({ from, to })
+        items.push({ from, to, name: item.name })
       }
 
       if (items.length === 0) {
         return
       }
 
-      if (this.$store.state.clipboard.key === 'x') {
-        api.move(items).then(() => {
+      let action = (overwrite, rename) => {
+        api.copy(items, overwrite, rename).then(() => {
           this.$store.commit('setReload', true)
         }).catch(this.$showError)
+      }
+
+      if (this.$store.state.clipboard.key === 'x') {
+        action = (overwrite, rename) => {
+          api.move(items, overwrite, rename).then(() => {
+            this.$store.commit('resetClipboard')
+            this.$store.commit('setReload', true)
+          }).catch(this.$showError)
+        }
+      }
+
+      if (this.$store.state.clipboard.path == this.$route.path) {
+        action(false, true)
+
         return
       }
 
-      api.copy(items).then(() => {
-        this.$store.commit('setReload', true)
-      }).catch(this.$showError)
+      let conflict = upload.checkConflict(items, this.req.items)
+
+      let overwrite = false
+      let rename = false
+
+      if (conflict) {
+        this.$store.commit('showHover', {
+          prompt: 'replace-rename',
+          confirm: (event, option) => {
+            overwrite = option == 'overwrite'
+            rename = option == 'rename'
+
+            event.preventDefault()
+            this.$store.commit('closeHovers')
+            action(overwrite, rename)
+          }
+        })
+
+        return
+      }
+
+      action(overwrite, rename)
     },
     resizeEvent () {
       // Update the columns size based on the window width.
diff --git a/frontend/src/components/files/ListingItem.vue b/frontend/src/components/files/ListingItem.vue
index 2eca5779..9b0c5c6c 100644
--- a/frontend/src/components/files/ListingItem.vue
+++ b/frontend/src/components/files/ListingItem.vue
@@ -36,6 +36,7 @@ import { mapMutations, mapGetters, mapState } from 'vuex'
 import filesize from 'filesize'
 import moment from 'moment'
 import { files as api } from '@/api'
+import * as upload  from '@/utils/upload'
 
 export default {
   name: 'item',
@@ -110,26 +111,61 @@ export default {
 
       el.style.opacity = 1
     },
-    drop: function (event) {
+    drop: async function (event) {
       if (!this.canDrop) return
       event.preventDefault()
 
       if (this.selectedCount === 0) return
 
+      let el = event.target
+      for (let i = 0; i < 5; i++) {
+        if (el !== null && !el.classList.contains('item')) {
+          el = el.parentElement
+        }
+      }
+
       let items = []
 
       for (let i of this.selected) {
         items.push({
           from: this.req.items[i].url,
-          to: this.url + this.req.items[i].name
+          to: this.url + this.req.items[i].name,
+          name: this.req.items[i].name
         })
+      }      
+
+      let base = el.querySelector('.name').innerHTML + '/'
+      let path = this.$route.path + base
+      let baseItems = (await api.fetch(path)).items
+
+      let action = (overwrite, rename) => {
+        api.move(items, overwrite, rename).then(() => {
+          this.$store.commit('setReload', true)
+        }).catch(this.$showError)
       }
 
-      api.move(items)
-        .then(() => {
-          this.$store.commit('setReload', true)
+      let conflict = upload.checkConflict(items, baseItems)
+
+      let overwrite = false
+      let rename = false
+
+      if (conflict) {
+        this.$store.commit('showHover', {
+          prompt: 'replace-rename',
+          confirm: (event, option) => {
+            overwrite = option == 'overwrite'
+            rename = option == 'rename'
+
+            event.preventDefault()
+            this.$store.commit('closeHovers')
+            action(overwrite, rename)
+          }
         })
-        .catch(this.$showError)
+
+        return
+      }
+
+      action(overwrite, rename)
     },
     click: function (event) {
       if (this.selectedCount !== 0) event.preventDefault()
diff --git a/frontend/src/components/files/Preview.vue b/frontend/src/components/files/Preview.vue
index 1294fa5f..b065d185 100644
--- a/frontend/src/components/files/Preview.vue
+++ b/frontend/src/components/files/Preview.vue
@@ -5,10 +5,22 @@
         <i class="material-icons">close</i>
       </button>
 
-      <rename-button v-if="user.perm.rename"></rename-button>
-      <delete-button v-if="user.perm.delete"></delete-button>
-      <download-button v-if="user.perm.download"></download-button>
-      <info-button></info-button>
+      <div class="title">
+        <span>{{ this.name }}</span>
+      </div>
+
+      <rename-button :disabled="loading" v-if="user.perm.rename"></rename-button>
+      <delete-button :disabled="loading" v-if="user.perm.delete"></delete-button>
+      <download-button :disabled="loading" v-if="user.perm.download"></download-button>
+      <info-button :disabled="loading"></info-button>
+    </div>
+
+    <div class="loading" v-if="loading">
+      <div class="spinner">
+        <div class="bounce1"></div>
+        <div class="bounce2"></div>
+        <div class="bounce3"></div>
+      </div>
     </div>
 
     <button class="action" @click="prev" v-show="hasPrevious" :aria-label="$t('buttons.previous')" :title="$t('buttons.previous')">
@@ -18,25 +30,27 @@
       <i class="material-icons">chevron_right</i>
     </button>
 
-    <div class="preview">
-      <ExtendedImage v-if="req.type == 'image'" :src="raw"></ExtendedImage>
-      <audio v-else-if="req.type == 'audio'" :src="raw" autoplay controls></audio>
-      <video v-else-if="req.type == 'video'" :src="raw" autoplay controls>
-        <track
-          kind="captions"
-          v-for="(sub, index) in subtitles"
-          :key="index"
-          :src="sub"
-          :label="'Subtitle ' + index" :default="index === 0">
-        Sorry, your browser doesn't support embedded videos,
-        but don't worry, you can <a :href="download">download it</a>
-        and watch it with your favorite video player!
-      </video>
-      <object v-else-if="req.extension == '.pdf'" class="pdf" :data="raw"></object>
-      <a v-else-if="req.type == 'blob'" :href="download">
-        <h2 class="message">{{ $t('buttons.download') }} <i class="material-icons">file_download</i></h2>
-      </a>
-    </div>
+    <template v-if="!loading">
+      <div class="preview">
+        <ExtendedImage v-if="req.type == 'image'" :src="raw"></ExtendedImage>
+        <audio v-else-if="req.type == 'audio'" :src="raw" autoplay controls></audio>
+        <video v-else-if="req.type == 'video'" :src="raw" autoplay controls>
+          <track
+            kind="captions"
+            v-for="(sub, index) in subtitles"
+            :key="index"
+            :src="sub"
+            :label="'Subtitle ' + index" :default="index === 0">
+          Sorry, your browser doesn't support embedded videos,
+          but don't worry, you can <a :href="download">download it</a>
+          and watch it with your favorite video player!
+        </video>
+        <object v-else-if="req.extension == '.pdf'" class="pdf" :data="raw"></object>
+        <a v-else-if="req.type == 'blob'" :href="download">
+          <h2 class="message">{{ $t('buttons.download') }} <i class="material-icons">file_download</i></h2>
+        </a>
+      </div>
+    </template>
   </div>
 </template>
 
@@ -72,11 +86,12 @@ export default {
       previousLink: '',
       nextLink: '',
       listing: null,
+      name: '',
       subtitles: []
     }
   },
   computed: {
-    ...mapState(['req', 'user', 'oldReq', 'jwt']),
+    ...mapState(['req', 'user', 'oldReq', 'jwt', 'loading']),
     hasPrevious () {
       return (this.previousLink !== '')
     },
@@ -96,30 +111,24 @@ export default {
       return `${this.previewUrl}&inline=true`
     }
   },
+  watch: {
+    $route: function () {
+      this.updatePreview()
+    }
+  },
   async mounted () {
     window.addEventListener('keyup', this.key)
-
-    if (this.req.subtitles) {
-      this.subtitles = this.req.subtitles.map(sub => `${baseURL}/api/raw${sub}?auth=${this.jwt}&inline=true`)
-    }
-
-    try {
-      if (this.oldReq.items) {
-        this.updateLinks(this.oldReq.items)
-      } else {
-        const path = url.removeLastDir(this.$route.path)
-        const res = await api.fetch(path)
-        this.updateLinks(res.items)
-      }
-    } catch (e) {
-      this.$showError(e)
-    }
+    this.$store.commit('setPreviewMode', true)
+    this.listing = this.oldReq.items
+    this.updatePreview()
   },
   beforeDestroy () {
     window.removeEventListener('keyup', this.key)
+    this.$store.commit('setPreviewMode', false)
   },
   methods: {
     back () {
+      this.$store.commit('setPreviewMode', false)
       let uri = url.removeLastDir(this.$route.path) + '/'
       this.$router.push({ path: uri })
     },
@@ -138,22 +147,42 @@ export default {
         if (this.hasPrevious) this.prev()
       }
     },
-    updateLinks (items) {
-      for (let i = 0; i < items.length; i++) {
-        if (items[i].name !== this.req.name) {
+    async updatePreview () {
+      if (this.req.subtitles) {
+        this.subtitles = this.req.subtitles.map(sub => `${baseURL}/api/raw${sub}?auth=${this.jwt}&inline=true`)
+      }
+
+      let dirs = this.$route.fullPath.split("/")
+      this.name = decodeURIComponent(dirs[dirs.length - 1])
+
+      if (!this.listing) {
+        try {
+          const path = url.removeLastDir(this.$route.path)
+          const res = await api.fetch(path)
+          this.listing = res.items
+        } catch (e) {
+          this.$showError(e)
+        }
+      }
+
+      this.previousLink = ''
+      this.nextLink = ''
+
+      for (let i = 0; i < this.listing.length; i++) {
+        if (this.listing[i].name !== this.name) {
           continue
         }
 
         for (let j = i - 1; j >= 0; j--) {
-          if (mediaTypes.includes(items[j].type)) {
-            this.previousLink = items[j].url
+          if (mediaTypes.includes(this.listing[j].type)) {
+            this.previousLink = this.listing[j].url
             break
           }
         }
 
-        for (let j = i + 1; j < items.length; j++) {
-          if (mediaTypes.includes(items[j].type)) {
-            this.nextLink = items[j].url
+        for (let j = i + 1; j < this.listing.length; j++) {
+          if (mediaTypes.includes(this.listing[j].type)) {
+            this.nextLink = this.listing[j].url
             break
           }
         }
diff --git a/frontend/src/components/prompts/Copy.vue b/frontend/src/components/prompts/Copy.vue
index 91471bf4..c8618b4f 100644
--- a/frontend/src/components/prompts/Copy.vue
+++ b/frontend/src/components/prompts/Copy.vue
@@ -16,7 +16,6 @@
         :title="$t('buttons.cancel')">{{ $t('buttons.cancel') }}</button>
       <button class="button button--flat"
         @click="copy"
-        :disabled="$route.path === dest"
         :aria-label="$t('buttons.copy')"
         :title="$t('buttons.copy')">{{ $t('buttons.copy') }}</button>
     </div>
@@ -28,6 +27,7 @@ import { mapState } from 'vuex'
 import FileList from './FileList'
 import { files as api } from '@/api'
 import buttons from '@/utils/buttons'
+import * as upload  from '@/utils/upload'
 
 export default {
   name: 'copy',
@@ -42,25 +42,66 @@ export default {
   methods: {
     copy: async function (event) {
       event.preventDefault()
-      buttons.loading('copy')
       let items = []
 
       // Create a new promise for each file.
       for (let item of this.selected) {
         items.push({
           from: this.req.items[item].url,
-          to: this.dest + encodeURIComponent(this.req.items[item].name)
+          to: this.dest + encodeURIComponent(this.req.items[item].name),
+          name: this.req.items[item].name
         })
       }
 
-      try {
-        await api.copy(items)
-        buttons.success('copy')
-        this.$router.push({ path: this.dest })
-      } catch (e) {
-        buttons.done('copy')
-        this.$showError(e)
+      let action = async (overwrite, rename) => {
+        buttons.loading('copy')
+
+        await api.copy(items, overwrite, rename).then(() => {
+          buttons.success('copy')
+
+          if (this.$route.path === this.dest) {
+            this.$store.commit('setReload', true)
+
+            return
+          }
+
+          this.$router.push({ path: this.dest })
+        }).catch((e) => {
+          buttons.done('copy')
+          this.$showError(e)
+        })
       }
+
+      if (this.$route.path === this.dest) {
+        this.$store.commit('closeHovers')
+        action(false, true)
+
+        return
+      }
+
+      let dstItems = (await api.fetch(this.dest)).items
+      let conflict = upload.checkConflict(items, dstItems)
+
+      let overwrite = false
+      let rename = false
+
+      if (conflict) {
+        this.$store.commit('showHover', {
+          prompt: 'replace-rename',
+          confirm: (event, option) => {
+            overwrite = option == 'overwrite'
+            rename = option == 'rename'
+
+            event.preventDefault()
+            this.$store.commit('closeHovers')
+            action(overwrite, rename)
+          }
+        })
+
+        return
+      }
+
+      action(overwrite, rename)
     }
   }
 }
diff --git a/frontend/src/components/prompts/FileList.vue b/frontend/src/components/prompts/FileList.vue
index 5769d3b9..243f66d7 100644
--- a/frontend/src/components/prompts/FileList.vue
+++ b/frontend/src/components/prompts/FileList.vue
@@ -41,19 +41,7 @@ export default {
     }
   },
   mounted () {
-    // If we're showing this on a listing,
-    // we can use the current request object
-    // to fill the move options.
-    if (this.req.kind === 'listing') {
-      this.fillOptions(this.req)
-      return
-    }
-
-    // Otherwise, we must be on a preview or editor
-    // so we fetch the data from the previous directory.
-    files.fetch(url.removeLastDir(this.$route.path))
-      .then(this.fillOptions)
-      .catch(this.$showError)
+    this.fillOptions(this.req)
   },
   methods: {
     fillOptions (req) {
diff --git a/frontend/src/components/prompts/Move.vue b/frontend/src/components/prompts/Move.vue
index c827ea48..0dd23f0c 100644
--- a/frontend/src/components/prompts/Move.vue
+++ b/frontend/src/components/prompts/Move.vue
@@ -27,6 +27,7 @@ import { mapState } from 'vuex'
 import FileList from './FileList'
 import { files as api } from '@/api'
 import buttons from '@/utils/buttons'
+import * as upload  from '@/utils/upload'
 
 export default {
   name: 'move',
@@ -41,26 +42,51 @@ export default {
   methods: {
     move: async function (event) {
       event.preventDefault()
-      buttons.loading('move')
       let items = []
 
       for (let item of this.selected) {
         items.push({
           from: this.req.items[item].url,
-          to: this.dest + encodeURIComponent(this.req.items[item].name)
+          to: this.dest + encodeURIComponent(this.req.items[item].name),
+          name: this.req.items[item].name
         })
       }
 
-      try {
-        api.move(items)
-        buttons.success('move')
-        this.$router.push({ path: this.dest })
-      } catch (e) {
-        buttons.done('move')
-        this.$showError(e)
+      let action = async (overwrite, rename) => {
+        buttons.loading('move')
+
+        await api.move(items, overwrite, rename).then(() => {
+          buttons.success('move')
+          this.$router.push({ path: this.dest })
+        }).catch((e) => {
+          buttons.done('move')
+          this.$showError(e)
+        })
       }
 
-      event.preventDefault()
+      let dstItems = (await api.fetch(this.dest)).items
+      let conflict = upload.checkConflict(items, dstItems)
+
+      let overwrite = false
+      let rename = false
+
+      if (conflict) {
+        this.$store.commit('showHover', {
+          prompt: 'replace-rename',
+          confirm: (event, option) => {
+            overwrite = option == 'overwrite'
+            rename = option == 'rename'
+
+            event.preventDefault()
+            this.$store.commit('closeHovers')
+            action(overwrite, rename)
+          }
+        })
+
+        return
+      }
+
+      action(overwrite, rename)
     }
   }
 }
diff --git a/frontend/src/components/prompts/Prompts.vue b/frontend/src/components/prompts/Prompts.vue
index 00ed511f..bb4a7c9b 100644
--- a/frontend/src/components/prompts/Prompts.vue
+++ b/frontend/src/components/prompts/Prompts.vue
@@ -16,6 +16,7 @@ import Copy from './Copy'
 import NewFile from './NewFile'
 import NewDir from './NewDir'
 import Replace from './Replace'
+import ReplaceRename from './ReplaceRename'
 import Share from './Share'
 import Upload from './Upload'
 import { mapState } from 'vuex'
@@ -35,6 +36,7 @@ export default {
     NewDir,
     Help,
     Replace,
+    ReplaceRename,
     Upload
   },
   data: function () {
@@ -52,7 +54,7 @@ export default {
       return
 
       let prompt = this.$refs.currentComponent;
-      
+
       // Enter
       if (event.keyCode == 13) {
         switch (this.show) {
@@ -87,6 +89,7 @@ export default {
         'newDir',
         'download',
         'replace',
+        'replace-rename',
         'share',
         'upload'
       ].indexOf(this.show) >= 0;
diff --git a/frontend/src/components/prompts/ReplaceRename.vue b/frontend/src/components/prompts/ReplaceRename.vue
new file mode 100644
index 00000000..058f5a5a
--- /dev/null
+++ b/frontend/src/components/prompts/ReplaceRename.vue
@@ -0,0 +1,35 @@
+<template>
+  <div class="card floating">
+    <div class="card-title">
+      <h2>{{ $t('prompts.replace') }}</h2>
+    </div>
+
+    <div class="card-content">
+      <p>{{ $t('prompts.replaceMessage') }}</p>
+    </div>
+
+    <div class="card-action">
+      <button class="button button--flat button--grey"
+        @click="$store.commit('closeHovers')"
+        :aria-label="$t('buttons.cancel')"
+        :title="$t('buttons.cancel')">{{ $t('buttons.cancel') }}</button>
+      <button class="button button--flat button--blue"
+        @click="(event) => showConfirm(event, 'rename')"
+        :aria-label="$t('buttons.rename')"
+        :title="$t('buttons.rename')">{{ $t('buttons.rename') }}</button>
+      <button class="button button--flat button--red"
+        @click="(event) => showConfirm(event, 'overwrite')"
+        :aria-label="$t('buttons.replace')"
+        :title="$t('buttons.replace')">{{ $t('buttons.replace') }}</button>
+    </div>
+  </div>
+</template>
+
+<script>
+import { mapState } from 'vuex'
+
+export default {
+  name: 'replace-rename',
+  computed: mapState(['showConfirm'])
+}
+</script>
diff --git a/frontend/src/css/_buttons.css b/frontend/src/css/_buttons.css
index 79dab790..087c6286 100644
--- a/frontend/src/css/_buttons.css
+++ b/frontend/src/css/_buttons.css
@@ -25,8 +25,8 @@
   background: var(--red);
 }
 
-.button--red:hover {
-  background: var(--dark-red);
+.button--blue {
+  background: var(--blue);
 }
 
 .button--flat {
diff --git a/frontend/src/css/styles.css b/frontend/src/css/styles.css
index 2da1d242..8d486c0d 100644
--- a/frontend/src/css/styles.css
+++ b/frontend/src/css/styles.css
@@ -125,8 +125,13 @@
   height: 3.7em;
 }
 
-#previewer .action:first-of-type {
+#previewer .bar .title {
   margin-right: auto;
+  padding: 0 1em;
+  line-height: 2.7em;
+  overflow: hidden;
+  word-break: break-word;
+  color: #fff;
 }
 
 #previewer .action i {
@@ -219,6 +224,11 @@
   font-size: 1.2em;
 }
 
+#previewer .loading {
+  height: 100%;
+  width: 100%;
+}
+
 #editor-container #editor {
   height: calc(100vh - 8.2em);
 }
diff --git a/frontend/src/store/index.js b/frontend/src/store/index.js
index 3662d3a6..40b56df4 100644
--- a/frontend/src/store/index.js
+++ b/frontend/src/store/index.js
@@ -23,7 +23,8 @@ const state = {
   show: null,
   showShell: false,
   showMessage: null,
-  showConfirm: null
+  showConfirm: null,
+  previewMode: false
 }
 
 export default new Vuex.Store({
diff --git a/frontend/src/store/modules/upload.js b/frontend/src/store/modules/upload.js
index 738edaf9..6552dd01 100644
--- a/frontend/src/store/modules/upload.js
+++ b/frontend/src/store/modules/upload.js
@@ -37,6 +37,11 @@ const mutations = {
   }
 }
 
+const beforeUnload = (event) => {
+  event.preventDefault()
+  event.returnValue = ''
+}
+
 const actions = {
   upload: (context, item) => {
     let uploadsCount = Object.keys(context.state.uploads).length;
@@ -45,6 +50,7 @@ const actions = {
     let isUploadsEmpty = uploadsCount == 0
 
     if (isQueueEmpty && isUploadsEmpty) {
+      window.addEventListener('beforeunload', beforeUnload)
       buttons.loading('upload')
     }
 
@@ -67,6 +73,7 @@ const actions = {
     let canProcess = isBellowLimit && !isQueueEmpty
 
     if (isFinished) {
+      window.removeEventListener('beforeunload', beforeUnload)
       buttons.success('upload')
       context.commit('reset')
       context.commit('setReload', true, { root: true })
diff --git a/frontend/src/store/mutations.js b/frontend/src/store/mutations.js
index 579edbec..46aad6e6 100644
--- a/frontend/src/store/mutations.js
+++ b/frontend/src/store/mutations.js
@@ -78,10 +78,14 @@ const mutations = {
   updateClipboard: (state, value) => {
     state.clipboard.key = value.key
     state.clipboard.items = value.items
+    state.clipboard.path = value.path
   },
   resetClipboard: (state) => {
     state.clipboard.key = ''
     state.clipboard.items = []
+  },
+  setPreviewMode(state, value) {
+    state.previewMode = value
   }
 }
 
diff --git a/frontend/src/utils/upload.js b/frontend/src/utils/upload.js
index 61e6a8e7..54b5669e 100644
--- a/frontend/src/utils/upload.js
+++ b/frontend/src/utils/upload.js
@@ -6,10 +6,7 @@ export function checkConflict(files, items) {
     items = []
   }
 
-  let folder_upload = false
-  if (files[0].fullPath !== undefined) {
-    folder_upload = true
-  }
+  let folder_upload = files[0].fullPath !== undefined
 
   let conflict = false
   for (let i = 0; i < files.length; i++) {
@@ -69,7 +66,7 @@ export function scanFiles(dt) {
         const dir = {
           isDir: true,
           size: 0,
-          path: `${directory}${entry.name}`
+          fullPath: `${directory}${entry.name}`
         }
 
         contents.push(dir)
@@ -112,7 +109,7 @@ export function handleFiles(files, path, overwrite = false) {
 
     if (file.isDir) {
       itemPath = path
-      let folders = file.path.split("/")
+      let folders = file.fullPath.split("/")
 
       for (let i = 0; i < folders.length; i++) {
         let folder = folders[i]
diff --git a/frontend/src/views/Files.vue b/frontend/src/views/Files.vue
index af54a91c..c0e03bfc 100644
--- a/frontend/src/views/Files.vue
+++ b/frontend/src/views/Files.vue
@@ -10,14 +10,15 @@
         <router-link :to="link.url">{{ link.name }}</router-link>
       </span>
     </div>
+
     <div v-if="error">
       <not-found v-if="error.message === '404'"></not-found>
       <forbidden v-else-if="error.message === '403'"></forbidden>
       <internal-error v-else></internal-error>
     </div>
+    <preview v-else-if="isPreview"></preview>
     <editor v-else-if="isEditor"></editor>
     <listing :class="{ multiple }" v-else-if="isListing"></listing>
-    <preview v-else-if="isPreview"></preview>
     <div v-else>
       <h2 class="message">
         <span>{{ $t('files.loading') }}</span>
@@ -65,7 +66,7 @@ export default {
       'show'
     ]),
     isPreview () {
-      return !this.loading && !this.isListing && !this.isEditor
+      return !this.loading && !this.isListing && !this.isEditor || this.loading && this.$store.state.previewMode
     },
     breadcrumbs () {
       let parts = this.$route.path.split('/')
diff --git a/http/resource.go b/http/resource.go
index 95224083..20376968 100644
--- a/http/resource.go
+++ b/http/resource.go
@@ -127,6 +127,10 @@ var resourcePostPutHandler = withUser(func(w http.ResponseWriter, r *http.Reques
 		return nil
 	}, action, r.URL.Path, "", d.user)
 
+	if err != nil {
+		_ = d.user.Fs.RemoveAll(r.URL.Path)
+	}
+
 	return errToStatus(err), err
 })
 
@@ -144,6 +148,31 @@ var resourcePatchHandler = withUser(func(w http.ResponseWriter, r *http.Request,
 		return http.StatusForbidden, nil
 	}
 
+	override := r.URL.Query().Get("override") == "true"
+	rename := r.URL.Query().Get("rename") == "true"
+
+	if !override && !rename {
+		if _, err = d.user.Fs.Stat(dst); err == nil {
+			return http.StatusConflict, nil
+		}
+	}
+
+	if rename {
+		counter := 1
+		dir, name := filepath.Split(dst)
+		ext := filepath.Ext(name)
+		base := strings.TrimSuffix(name, ext)
+
+		for {
+			if _, err = d.user.Fs.Stat(dst); err != nil {
+				break
+			}
+			new := fmt.Sprintf("%s(%d)%s", base, counter, ext)
+			dst = filepath.Join(dir, new)
+			counter++
+		}
+	}
+
 	err = d.RunHook(func() error {
 		switch action {
 		// TODO: use enum