Odd Bits / Your files

Folder Scrub

Before you zip a project, push a repo, or send a folder to a client, drop it here. It lists the files and lines that contain emails, things that look like keys or tokens, .env files, and paths that include your username.

FreeRuns on your device
What you get
  • Emails, key-like strings, .env files and home paths flagged with file and line
  • Secrets masked in the results
  • A safety net before you share a folder, not a guarantee
Works with
Folders.zip files
Version
v1.0, updated 2026-10-19
Nothing uploaded. Your file is not uploaded. The page tells the browser to block its code from connecting to other sites, and the code makes no request that carries your file. How to check that yourself

Drop a folder or a .zip here

What it never does

Questions

What does it flag?

Email addresses (reserved example domains such as example.com show as warnings). Well-known key formats: Stripe, Google, AWS, GitHub, Slack, Supabase, JWT-shaped tokens, private-key blocks and sk- style keys. URLs with a password in them. Lines where a name containing key, secret, token or password is set to a value of 16 or more characters with no spaces (a short value or a passphrase with spaces is not flagged). Files by name: .env files (.env.example is only a warning), key and certificate files, .htpasswd, .git-credentials, .netrc. Home-directory paths (/Users/name, /home/name, C:Users ame); ~ paths show as warnings. Any words you add as your own private terms.

Is this a security scanner?

No. It is a safety net made of text patterns. It misses things (an unusual key format, a secret in an image) and flags things that are fine (an example email). Read what you share.

Will it find every secret?

No. “Nothing found by these patterns” means exactly that.

What does it not search?

Binary files, files over 5 MB, and the .git and node_modules folders. Every one of them is listed in the results, and the headline says how many were not searched. A .git folder can hold old secrets from earlier versions: check it separately.

How big a folder can it handle?

Up to 50,000 files, each up to 5 MB. A zip can be up to 300 MB, and zips inside zips are opened up to three levels deep. The 5 MB limit applies to each file inside a zip. Bigger files are listed as not searched. Very large folders can take a while, and the page says if it stopped early.

Does it work on a phone or in any browser?

Choosing a zip works in any current browser (it needs a recent browser that can unzip files natively). Choosing or dropping a whole folder needs a desktop browser.

Why are keys partly hidden in the results?

So the results, a screenshot of them, or the report you download never contain the full key. The file and line tell you where to look.

What if it finds a real key?

Change the key at the service that issued it. Deleting the file does not undo having shared it.

Is anything uploaded?

No. Open your browser’s network tab and let the page finish loading, clear the list, then run a scan: nothing that carries your files appears. (The browser may load other pages of this store in the background while you browse; that is separate from scanning.) See “Why nothing uploads” in the store FAQ.