Metal shield with a padlock in front of a stack of translucent documents, next to a glowing “Secured file” card with a green check mark.

Free tools · No account

Check your files. Keep them to yourself.

Five free tools to prepare, check and clean your documents before sharing them. Files stay on your device, with no account to create.

Processed locally. Your files stay on your device.

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Signature-based scan

Local malware scanner

Look for malware indicators with the YARA engine, without sending the file to a server.

Scan a file
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Integrity check

SHA-256 calculator

Compute a file’s fingerprint and compare it with a reference given by the sender.

Compute a fingerprint
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Privacy

Metadata cleaner

Remove the GPS position, author and hidden properties of a photo or PDF before sharing it.

Clean a file
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Organisation

Client document checklist

Generate the list of documents to ask a client for, depending on your profession, with a message ready to send.

Create a checklist
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Format identification

File type detector

Examine the first bytes of a file and spot mismatches with its extension.

Identify a file

Before you pass a document on

A file signature and a fingerprint tell you different things. The first helps identify a format, the second compares content. The scanner looks for known indicators: none of these tools alone guarantees that a document is safe.

To organise your exchanges afterwards, discover the client folder for freelancers, the client portal for agencies and client document collection.

What comes next, in DocBunker

A checked file.
A better protected exchange.

Get file scanning inside the app and go further: share your documents in a client space, follow the exchanges and gather feedback in one place.

Create my DocBunker space Discover the app →