diff --git a/lib/rclone/api.ts b/lib/rclone/api.ts
index bb9a945..32da5c7 100644
--- a/lib/rclone/api.ts
+++ b/lib/rclone/api.ts
@@ -392,7 +392,13 @@ async function fetchTransferred() {
     return transferred
 }
 
-async function fetchJob(jobId: number, transferred: Awaited<ReturnType<typeof fetchTransferred>>) {
+async function fetchJob(
+    jobId: number,
+    transferred: Awaited<ReturnType<typeof fetchTransferred>>,
+    checkingItems: { group?: string; name?: string; size?: number }[]
+) {
+    console.log('[fetchJob] fetching job', jobId)
+
     const job = await rclone('/core/stats', {
         params: {
             query: {
@@ -412,20 +418,33 @@ async function fetchJob(jobId: number, transferred: Awaited<ReturnType<typeof fe
     console.log('[fetchJob] job status', jobId, JSON.stringify(jobStatus, null, 2))
 
     let hasError = !!jobStatus?.error
+    let isDryRun = false
 
     if (
-        !hasError &&
         jobStatus.output &&
         typeof jobStatus.output === 'object' &&
         'results' in jobStatus.output &&
         Array.isArray(jobStatus.output.results)
     ) {
-        hasError = jobStatus.output.results.some((result: any) => !!result?.error)
+        if (!hasError) {
+            hasError = jobStatus.output.results.some((result: any) => !!result?.error)
+        }
+        isDryRun = jobStatus.output.results.some((result: any) => {
+            const srcFs = result.input?.srcFs || ''
+            return srcFs.includes('dry_run') || srcFs.includes('dry-run')
+        })
     }
 
+    const jobCheckingItems = checkingItems.filter((c) => c.group === `job/${jobId}`)
+    const isChecking = jobCheckingItems.length > 0
+    const checkingCount = jobCheckingItems.length
+
+    console.log('[fetchJob] checking state', jobId, { isChecking, checkingCount })
+
     const relatedItems = transferred.filter((t) => t.group === `job/${jobId}`)
-    if (relatedItems.length === 0) {
-        console.log('[fetchJob] relatedItems not found', jobId)
+
+    if (relatedItems.length === 0 && !isChecking) {
+        console.log('[fetchJob] no relatedItems and not checking', jobId)
         return null
     }
 
@@ -455,6 +474,14 @@ async function fetchJob(jobId: number, transferred: Awaited<ReturnType<typeof fe
         }
     }
 
+    if (isChecking && sources.size === 0) {
+        for (const checkItem of jobCheckingItems) {
+            if (checkItem.name) {
+                sources.add(checkItem.name)
+            }
+        }
+    }
+
     if (sources.size === 0 && !hasError) {
         console.log('[fetchJob] source or hasError not found', jobId)
         return null
@@ -467,10 +494,13 @@ async function fetchJob(jobId: number, transferred: Awaited<ReturnType<typeof fe
         speed: job.speed,
 
         done: job.bytes === job.totalBytes,
-        progress: Math.round((job.bytes / job.totalBytes) * 100),
+        progress: job.totalBytes > 0 ? Math.round((job.bytes / job.totalBytes) * 100) : 0,
         hasError: hasError,
 
         sources: Array.from(sources),
+        isChecking,
+        checkingCount,
+        isDryRun,
     }
 }
 
@@ -481,8 +511,10 @@ export async function listTransfers() {
     console.log('[listTransfers] allStats', JSON.stringify(allStats, null, 2))
 
     const transferring = allStats?.transferring || []
+    const checking = allStats?.checking || []
 
     console.log('[listTransfers] transferring count:', transferring.length)
+    console.log('[listTransfers] checking count:', checking.length)
 
     const transferred = await fetchTransferred()
     console.log('[listTransfers] transferred count:', transferred?.length || 0)
@@ -492,19 +524,30 @@ export async function listTransfers() {
         inactive: [] as JobItem[],
     }
 
-    const activeJobIds = new Set(
+    const transferringJobIds = new Set(
         transferring
-            ?.filter((t) => t.group?.startsWith('job/'))
+            .filter((t) => t.group?.startsWith('job/'))
             .map((t) => Number(t.group!.split('/')[1]))
-            .sort((a, b) => a - b)
     )
-    console.log('[listTransfers] activeJobIds', activeJobIds.size)
+
+    const checkingJobIds = new Set(
+        checking
+            .filter((c) => c.group?.startsWith('job/'))
+            .map((c) => Number(c.group!.split('/')[1]))
+    )
+
+    const activeJobIds = new Set([...transferringJobIds, ...checkingJobIds])
+    const sortedActiveJobIds = Array.from(activeJobIds).sort((a, b) => a - b)
+
+    console.log('[listTransfers] transferring job IDs:', Array.from(transferringJobIds))
+    console.log('[listTransfers] checking job IDs:', Array.from(checkingJobIds))
+    console.log('[listTransfers] combined active job IDs:', sortedActiveJobIds)
 
     const isWindows = platform() === 'windows'
     console.log('[listTransfers] isWindows', isWindows)
 
-    for (const jobId of activeJobIds) {
-        const job = await fetchJob(jobId, transferred)
+    for (const jobId of sortedActiveJobIds) {
+        const job = await fetchJob(jobId, transferred, checking)
         if (job) {
             jobs.active.push({
                 ...job,
@@ -523,12 +566,14 @@ export async function listTransfers() {
     console.log('[listTransfers] inactive job IDs:', Array.from(inactiveJobIds))
 
     for (const jobId of inactiveJobIds) {
-        const job = await fetchJob(jobId, transferred)
+        const job = await fetchJob(jobId, transferred, checking)
         if (job) {
             jobs.inactive.push({
                 ...job,
                 speed: 0,
                 type: 'inactive',
+                isChecking: false,
+                checkingCount: 0,
             })
         }
     }
diff --git a/src/components/JobDetailsDrawer.tsx b/src/components/JobDetailsDrawer.tsx
index 3b0220f..615dc11 100644
--- a/src/components/JobDetailsDrawer.tsx
+++ b/src/components/JobDetailsDrawer.tsx
@@ -14,7 +14,7 @@ import {
 import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
 import { message } from '@tauri-apps/plugin-dialog'
 import { platform } from '@tauri-apps/plugin-os'
-import { SquareIcon } from 'lucide-react'
+import { SearchCheckIcon, SquareIcon } from 'lucide-react'
 import { useMemo } from 'react'
 import { formatBytes } from '../../lib/format'
 import notify from '../../lib/notify'
@@ -126,6 +126,10 @@ export default function JobDetailsDrawer({
         () => jobGroupStatsQuery.data?.transferring || [],
         [jobGroupStatsQuery.data]
     )
+    const checking = useMemo(
+        () => jobGroupStatsQuery.data?.checking || [],
+        [jobGroupStatsQuery.data]
+    )
 
     return (
         <Drawer isOpen={isOpen} placement="bottom" size="2xl" onClose={onClose}>
@@ -169,6 +173,48 @@ export default function JobDetailsDrawer({
                         </Alert>
                     ) : null}
 
+                    {selectedJob.isDryRun && (
+                        <Alert color="warning" variant="faded">
+                            This is a dry-run operation. No files were actually transferred.
+                        </Alert>
+                    )}
+
+                    {checking.length > 0 ? (
+                        <div className="flex flex-col gap-2 pb-4">
+                            <div className="flex flex-row items-center justify-between gap-2">
+                                <h3 className="flex flex-row items-center gap-2 text-lg font-medium">
+                                    <SearchCheckIcon className="w-5 h-5 text-warning" />
+                                    Checking
+                                </h3>
+                                {jobGroupStatsQuery.isLoading ? (
+                                    <Spinner />
+                                ) : (
+                                    <Chip size="sm" color="warning" variant="flat">
+                                        {checking.length} item{checking.length === 1 ? '' : 's'}
+                                    </Chip>
+                                )}
+                            </div>
+                            <p className="text-sm text-default-500">
+                                Files are being verified before transfer. This can take a while for
+                                large directories.
+                            </p>
+                            {checking.map((item, itemIndex) => {
+                                const size = item.size ? formatBytes(item.size) : 'Unknown size'
+                                return (
+                                    <div
+                                        key={item.name || itemIndex}
+                                        className="flex flex-row items-center justify-between gap-2 pb-2 border-b border-divider"
+                                    >
+                                        <p className="flex-1 line-clamp-1 min-w-80">{item.name}</p>
+                                        <p className="text-sm tabular-nums text-default-500">
+                                            {size}
+                                        </p>
+                                    </div>
+                                )
+                            })}
+                        </div>
+                    ) : null}
+
                     <div className="flex flex-col gap-2">
                         <div className="flex flex-row items-center justify-between gap-2">
                             <h3 className="text-lg font-medium">Transferring</h3>
diff --git a/src/pages/Copy.tsx b/src/pages/Copy.tsx
index ea76488..1ff369b 100644
--- a/src/pages/Copy.tsx
+++ b/src/pages/Copy.tsx
@@ -189,7 +189,7 @@ export default function Copy() {
                     sources,
                     destination: dest,
                     options: {
-                        config: configOptions,
+                        config: { ...configOptions, dry_run: true },
                         copy: copyOptions,
                         filter: filterOptions,
                         remotes: remoteOptions,
diff --git a/src/pages/Delete.tsx b/src/pages/Delete.tsx
index ead1f50..7d0fb80 100644
--- a/src/pages/Delete.tsx
+++ b/src/pages/Delete.tsx
@@ -210,7 +210,7 @@ export default function Delete() {
                     sources: [sourceFs],
                     options: {
                         filter: filterOptions,
-                        config: configOptions,
+                        config: { ...configOptions, dry_run: true },
                     },
                 })
             )
diff --git a/src/pages/Move.tsx b/src/pages/Move.tsx
index 5f3866b..bea043b 100644
--- a/src/pages/Move.tsx
+++ b/src/pages/Move.tsx
@@ -216,7 +216,7 @@ export default function Move() {
                     sources,
                     destination: dest,
                     options: {
-                        config: configOptions,
+                        config: { ...configOptions, dry_run: true },
                         move: moveOptions,
                         filter: filterOptions,
                         remotes: remoteOptions,
diff --git a/src/pages/Sync.tsx b/src/pages/Sync.tsx
index 1623c47..73eae60 100644
--- a/src/pages/Sync.tsx
+++ b/src/pages/Sync.tsx
@@ -183,7 +183,7 @@ export default function Sync() {
                     source,
                     destination: dest,
                     options: {
-                        config: configOptions,
+                        config: { ...configOptions, dry_run: true },
                         sync: syncOptions,
                         filter: filterOptions,
                         remotes: remoteOptions,
diff --git a/src/pages/Transfers.tsx b/src/pages/Transfers.tsx
index 43beba0..4549b20 100644
--- a/src/pages/Transfers.tsx
+++ b/src/pages/Transfers.tsx
@@ -2,7 +2,7 @@ import { Card, CardBody, Progress, Tab, Tabs, Tooltip, useDisclosure } from '@he
 import { Button, Chip, Spinner } from '@heroui/react'
 import { useQuery } from '@tanstack/react-query'
 import { message } from '@tauri-apps/plugin-dialog'
-import { ChevronRightIcon, RefreshCcwIcon } from 'lucide-react'
+import { ChevronRightIcon, RefreshCcwIcon, SearchCheckIcon } from 'lucide-react'
 import { startTransition, useCallback, useMemo, useState } from 'react'
 import { buildReadablePathMultiple, formatBytes } from '../../lib/format'
 import { listTransfers } from '../../lib/rclone/api'
@@ -154,7 +154,7 @@ function JobCard({ job, onSelect }: { job: JobItem; onSelect: (job: JobItem) =>
                         </Chip>
                     </Tooltip>
 
-                    <div className="flex flex-row items-center flex-1">
+                    <div className="flex flex-row items-center flex-1 gap-2">
                         {job.hasError && <p className="text-danger">ERROR: Tap to view details.</p>}
 
                         {!job.hasError && (
@@ -169,11 +169,37 @@ function JobCard({ job, onSelect }: { job: JobItem; onSelect: (job: JobItem) =>
                                     ) : null
                                 ) : null}
 
+                                {job.isDryRun && (
+                                    <Chip size="sm" variant="flat" color="warning">
+                                        DRY RUN
+                                    </Chip>
+                                )}
+
+                                {job.type === 'active' && job.isChecking ? (
+                                    <Tooltip
+                                        content={`Checking ${job.checkingCount} file${job.checkingCount === 1 ? '' : 's'} before transfer`}
+                                        color="foreground"
+                                    >
+                                        <Chip
+                                            size="sm"
+                                            variant="flat"
+                                            color="warning"
+                                            startContent={<SearchCheckIcon className="w-3 h-3" />}
+                                        >
+                                            Checking {job.checkingCount}
+                                        </Chip>
+                                    </Tooltip>
+                                ) : null}
+
                                 {job.type === 'active' ? (
                                     <Tooltip
                                         content={`${formatBytes(job.bytes)} out of ${formatBytes(job.totalBytes)}`}
                                     >
-                                        <Progress value={job.progress} isStriped={true} />
+                                        <Progress
+                                            value={job.progress}
+                                            isStriped={true}
+                                            isIndeterminate={job.isChecking && job.totalBytes === 0}
+                                        />
                                     </Tooltip>
                                 ) : null}
                             </>
diff --git a/types/jobs.d.ts b/types/jobs.d.ts
index d2a7ec6..9633d5c 100644
--- a/types/jobs.d.ts
+++ b/types/jobs.d.ts
@@ -8,4 +8,7 @@ export type JobItem = {
     progress: number
     hasError: boolean
     sources: string[]
+    isChecking: boolean
+    checkingCount: number
+    isDryRun?: boolean
 }