Your Pixel 9 Pro fills up fastest with photos, 4K and 8K video, app caches, and downloads, and Google's own Files by Google app clears most of it with built-in cleanup suggestions. No factory reset needed.
Short answer:
- Open Files by Google and tap Clean to review junk, large files, duplicates, and old screenshots.
- Clear app caches at Settings > Apps > See all apps > [app] > Storage & cache > Clear cache.
- Back up to Google Photos, then use Free up space to remove local copies, and empty all trash folders.
See What's Using Your Pixel 9 Pro Storage
Pixel runs near-stock Android, so storage details live in a clean menu. Find the breakdown first.
- Open Settings.
- Tap Storage.
You'll see a usage bar broken down into Photos & videos, Apps, Games, Audio, Documents & other, and Trash. Tap any category to drill in. On a 50MP-plus camera like the Pixel 9 Pro's, Photos & videos almost always tops the list, especially if you shoot 4K or 8K. For an app-by-app view, open Settings > Apps > See all apps and sort by size.
Use Files by Google to Clean (The Best First Step)
Files by Google is preinstalled on Pixel and is the smartest, safest first pass. It only suggests reclaimable items.
- Open Files by Google.
- Tap the Clean tab at the bottom.
- Review the cards: Junk files, Downloaded files, Large files, Duplicate files, Old screenshots, Memes, and Backed-up media.
- Tap Select files on a card, review the list, then confirm.
The Backed-up media card is especially powerful, it safely removes photos and videos already saved to Google Photos, so you keep them in the cloud while freeing local space. Always glance at the selection before tapping delete.
Clear App Cache on the Pixel 9 Pro
App caches are temporary files that rebuild on their own, so clearing them is safe and often frees a surprising amount.
- Open Settings > Apps > See all apps.
- Tap the app, for example Chrome or Instagram.
- Tap Storage & cache.
- Tap Clear cache.
Key distinction: Clear cache removes temporary files only and is safe. Clear storage (Clear data) resets the app to a fresh install, signing you out and deleting offline downloads and drafts. Use Clear cache first. See clear cache vs clear data on Android, and how to clear cache for all apps at once to batch it.
Offload Photos and Large Videos
The Pixel camera is the main reason storage fills, so this is where the biggest reclaims live.
- Confirm backup is on in Google Photos (profile picture > Backup), then tap your profile > Free up space on this device to delete local copies already in the cloud.
- In Photos, review and remove blurry shots, bursts, and duplicates.
- Hunt oversized clips directly, a few 4K or 8K videos can equal hundreds of photos. Our large videos cleanup guide shows the fastest way, and screenshots cleanup handles the screenshot pile.
Clear Downloads and Empty Trash
Two quick wins people often forget.
- In Files by Google, open Downloads and delete finished installers, old PDFs, and stray attachments.
- Empty trash everywhere: Settings > Storage > Trash, the Trash in Files by Google, and the Bin in Google Photos (deleted items linger for up to 60 days there and still count if not yet emptied from the device).
Emptying these can instantly recover several gigabytes.
Clear App Caches in Bulk and Uninstall Dead Apps
If clearing caches one app at a time feels slow, target your heaviest offenders first, social and streaming apps like Instagram, TikTok, Chrome, and YouTube usually hold the largest caches on a Pixel. Sort apps by size in Settings > Apps > See all apps so you spend effort where it counts.
While you're there, uninstall apps you no longer open. Long-press an app icon and tap the info button, or use Settings > Apps > [app] > Uninstall. This removes the app and all its data in one step, which often frees more than a cache clear. Games are especially worth reviewing, a single large game can occupy several gigabytes between the app and its downloaded assets.
Keep Your Pixel 9 Pro Lean
A short routine keeps storage healthy:
- Open Files by Google > Clean every couple of weeks and act on the suggestions.
- Keep Google Photos backup on and run Free up space periodically.
- Clear caches for your heaviest apps monthly.
- Empty Downloads and all trash folders regularly.
Files by Google is excellent, but it won't catch every near-duplicate photo or oversized video, and clearing them one by one is slow. A review-first tool like Cleanor for Android scans on-device and surfaces large videos, duplicate photos, and junk so you confirm before anything is deleted. For more tactics, see the free up Android space hub and the storage cleanup FAQ.
With Files by Google, cache clearing, and Photos offloading, most Pixel 9 Pro owners reclaim plenty of space without ever resetting the phone.
Want the fast version? The Cleanor app finds your largest videos, duplicate photos, and heavy caches in one on-device pass — nothing uploaded. For the full routine, see the free up phone storage guide.
FAQ
How do I clean junk on a Pixel 9 Pro?
Open the preinstalled Files by Google app, tap the Clean tab at the bottom, and review the cards for Junk files, Downloaded files, Large files, Duplicate files, Old screenshots, Memes, and Backed-up media, then tap Select files and confirm. It only suggests reclaimable items, so it's a safe first pass.
What does the Backed-up media card in Files by Google do?
It safely removes photos and videos already saved to Google Photos, so you free local space on the Pixel while keeping the items in the cloud. Always glance at the selection before tapping delete.
How long do deleted photos stay in the Google Photos Bin on a Pixel?
Deleted items linger in the Google Photos Bin for up to 60 days and still count against storage if not yet emptied from the device. Empty the Bin in Photos along with Settings > Storage > Trash and the Trash in Files by Google to recover the space.