FilesBrowser-onlyNo signup
Analyze Duplicate File Finder Online
Find byte-identical files in a folder by SHA-256, not by name. Use Duplicate File Finder in your browser with no signup, no daily limit, and no backend processing for tool input.
Problem
You need to understand a dataset or payload before deciding what to clean, transform, or export.
What to do
Analysis gives a fast first pass on quality and structure. Use the findings to decide whether the data is ready or needs more cleanup.
- 1Load the dataset or payload into Duplicate File Finder.
- 2Review counts, types, warnings, and summaries.
- 3Use the findings to clean, validate, visualize, or export the data.
Use the browser tool
Duplicate File Finder is a free, browser-based tool that helps you understand a dataset at a glance. Find byte-identical files in a folder by SHA-256, not by name. It's built for speed and privacy: Everything runs locally in your browser — your data is never uploaded to a server. No sign-up, no installs, and no daily limits.
People also ask
- How do I use Duplicate File Finder?
- Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Find byte-identical files in a folder by SHA-256, not by name.
- Is my data uploaded or stored anywhere?
- No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.
- Is Duplicate File Finder free?
- Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.