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PDB file: what it is and how to open it

Palm OS database. Here is what a .pdb file contains, how to open one on any device, and a viewer that opens it right in your browser.

Open a .pdb file hereChoose fileRead in your browser. Nothing is uploaded.

What the viewer shows

  • Whether the file matches the .pdb signature
  • The first bytes as hex
  • A preview when your browser can display it

What is a .pdb file?

A .pdb file is a palm OS database. Its registered MIME type is application/vnd.palm, which places it in the application or document family of formats.

PDB is a binary format: the contents are not readable text, so opening it in a text editor shows scrambled characters.

The same format is also saved with the extensions .oprc, .pqa, .prc.

PDB file format details

Extension.pdb
FormatPalm OS database
MIME typeapplication/vnd.palm, application/x-pilot, application/x-aportisdoc
CategoryApplication or document
Text or binaryBinary
File signatureNone fixed
Registered with IANAYes
Other extensions.oprc, .pqa, .prc

How to open PDB files

WindowsPDB files (Palm OS database) are made by specific software. The reliable way to open one is with the program that created it; a generic viewer will only show raw data.
MacThe same applies on a Mac: look for a Mac version of the program that makes PDB files.
iPhone and iPadPhones rarely open this type of file directly. The viewer above can show what is inside it without installing anything.
AndroidThe same applies on Android. The viewer above shows the first bytes of the file so you can confirm what it is.

Convert PDB files

TapToConvert converts PDB files in your browser, without uploading them. Open the PDB converter, or go straight to a conversion:

PDB file FAQ

What is a .pdb file?

A .pdb file is a palm OS database, with the MIME type application/vnd.palm.

How do I open a .pdb file?

With the program that created it. The viewer on this page shows what is inside without installing anything.

Is a .pdb file safe to open?

PDB files hold data rather than programs, but any file from an unknown source can be crafted to exploit the software that opens it. Keep that software up to date. The viewer on this page only reads the bytes and never runs anything.

What is the MIME type of .pdb?

application/vnd.palm, and it is also seen as application/x-pilot or application/x-aportisdoc. Web servers send this type so browsers know how to handle the file.

Is PDB a text or binary format?

Binary. Its contents are not readable as text.

File type facts come from the IANA media type registry, the mime-db project and the freedesktop.org shared MIME database.

Similar file types

Try MP4 to MP3, HEIC, merge PDF or compress video.