Find the copies
Checksums identify byte-identical files. Image fingerprints help surface changed resolution, compression, rotation and crop candidates among the files you choose.
Works on files you chooseFind duplicate files.
Slowgrain Cleaner for Google Drive
Find duplicate files.
Keep the version you need.
Pick files in Google Drive or send them with Open with, compare duplicates and similar photos or videos side by side, and choose what to keep.
Pro checkout is temporarily paused while we finish the production release. The listed prices are planned launch prices; we will update this page when checkout is ready.
Exact duplicates2 files
video-original.mp43840 × 2160 · 240 MBKeep original
video-copy.mp43840 × 2160 · 240 MBCleanup candidate
Matching checksum
Compare before cleanup
Review files as a detailed list, information tiles, or a thumbnail gallery. Use comparison views and overlap timecodes for supported media.
Keep control
Choose preservation rules and review selections before moving files to Trash. Inspect cleanup history and request restoration.
PRIVACY
Your files stay in your workflow.
The app can open only files you pick or send to it, never your whole Drive. Fingerprints and history are stored in your own hidden Drive app data, and media is processed in your browser or by an optional helper on your computer.
Privacy ↗AUTOMATION
Recheck your list on a schedule.
Pro schedules recheck the files already in your list, even when your computer is off, and can clean up exact duplicates and eligible images if you turn that on. New Drive files are not added automatically.
Similarity scores describe candidates, not the probability of an identical file. The app does not empty Trash. Trashed files follow Google’s retention and storage rules.
Pricing
Free: up to 30 selected files at a time. Pro: US$2.99/month or US$24.99/year, up to 10,000 files in your list with scheduled rechecks. Launch discount on the first payment until 31 January 2027: 15% monthly, 30% yearly. Full refund on request within 30 days of a payment.
Terms ↗