Duplicate File Finder Online — No Watermark on Output
Many free online tools add watermarks to your output — a logo, a URL, or "made with…" branding that ruins professional documents. FlexyPdf's Duplicate File Finder never adds watermarks to your files. Every output is clean, unmarked, and ready for professional use. Whether you are preparing documents for clients, creating content for your business, or working on school assignments, your results look exactly as you intended — without any third-party branding. This is not a limited trial feature; watermark-free output is always included at no cost.
How to Use Duplicate File Finder
Select Files
Drag and drop multiple files or click to browse. Select all files you want to check for duplicates.
Scan for Duplicates
The tool calculates SHA-256 hashes for each file and identifies exact matches.
Review Results
See duplicate groups with file names, sizes, and total wasted space.
Features
SHA-256 Hashing
Uses cryptographic hashing for 100% accurate duplicate detection — byte-level comparison.
Wasted Space Report
See exactly how much storage space is wasted by duplicate files.
Group View
Duplicates are grouped together so you can easily see which files are identical.
Browser-Based
All hashing and comparison happens locally. Your files are never uploaded anywhere.
Benefits of Using Duplicate File Finder
Completely Free
Use Duplicate File Finder without any cost, limits, or hidden fees. No premium plans needed.
No Installation
Works directly in your browser. No software downloads or plugins required.
100% Private
Your files and data are processed locally. Nothing is uploaded to external servers.
Works Everywhere
Compatible with Chrome, Firefox, Safari, Edge on desktop, tablet, and mobile.
No Sign-Up
Start using the tool immediately. No account creation or email verification.
Always Available
Access this tool 24/7 from anywhere in the world, on any device.
Frequently Asked Questions
Complete Your Audio & Video Workflow
These free tools work seamlessly with Duplicate File Finder to handle every step of your workflow.