.flw Kivio flowchart

Documents & office

MIME typeapplication/x-kivio
DescriptionKivio flowchart
CategoryDocuments & office
Signature (magic bytes)1F 8B (..)
50 4B 03 04 (PK..)

Frequently asked questions

What is a .flw file?

A .flw file is a “Kivio flowchart” (MIME type application/x-kivio).

How do I open a .flw file?

With an office suite: LibreOffice (free, Windows/macOS/Linux) opens most document formats, as do Microsoft Office or the vendor’s own app.

How can you tell a genuine .flw file?

By the bytes at the start of the file, the signature (magic bytes): 1F 8B (..) and 50 4B 03 04 (PK..). On Linux and macOS, file --mime-type example.flw checks the real type regardless of the extension.

Which MIME type belongs to .flw?

The MIME type is application/x-kivio. In the Apache web server: AddType application/x-kivio .flw; in nginx: types { application/x-kivio flw; }.

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