.PGB file extension

To open .PGB files on Windows, right-click the .PGB file → Open with… → choose an image viewer/editor you trust (if available).

To open a .PGB file, try opening it with an image-capable application on your desktop OS (Windows/macOS/Linux) using “Open with…”. If your system does not recognize it, check whether it is detected as MIME type image/vnd.globalgraphics.pgb and consider using a different desktop viewer or converting it with a tool that can read it.

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Last updated: June 11, 2026 · Reviewed by Julian Stricker

What “reviewed” means on this page

Format fit: whether the “what is this file?” description matches common real-world use of the extension, including category, typical MIME types, and aliases.
Opening paths: whether Windows / macOS / Linux steps read plausibly for current OS dialogs and default apps; we remove fantasy menus and unsafe shortcuts.
Security framing: whether risk notes match the extension class (for example executables vs plain data) and whether affiliate wording does not contradict the security section.
Sources and further reading: whether external links point to vendors, standards bodies, or other primary references where possible; we avoid inventing details we cannot ground.
Limits: this is clarity and safety-messaging QA, not a guarantee that every statement is exhaustive or that every binary you download is harmless.

Full methodology in the Imprint — The Imprint also states where AI is used and what that does—and does not—replace.

Open on your device

Choose your operating system for a dedicated step-by-step opening guide.

How to open .PGB files

Use these platform-specific instructions to open .PGB files safely.

Windows

Right-click the .PGB file → Open with… → choose an image viewer/editor you trust (if available).
If no app opens it, check the file’s properties/details in your viewer or toolchain to see whether it is recognized as image/vnd.globalgraphics.pgb, then try a different desktop application that supports that subtype.

Full Windows guide

Mac

Control-click the .PGB file → Open With → choose an installed image application (if one is listed).
If it fails to open or no suitable app appears, treat it as an uncommon image subtype (image/vnd.globalgraphics.pgb) and try opening/processing it on another desktop system or with a different image tool.

Full Mac guide

Linux

Right-click the file → Properties (or similar) and note the detected MIME type; look for image/vnd.globalgraphics.pgb.
Try Open With… and select an image viewer; if none works, install software that can handle the registered subtype or convert it using a tool that supports image/vnd.globalgraphics.pgb.
If your system misdetects the file, ensure shared-mime-info is up to date so *.pgb can be mapped correctly.

Full Linux guide

iOS

If the Files app cannot preview it, share the .PGB to a third-party image app that explicitly supports uncommon image formats; otherwise transfer the file to a desktop system for viewing/conversion.

Full iOS guide

Android

If your file manager or gallery will not open it, try “Open with” and test a third-party image viewer; if that fails, move the file to a desktop OS to view/convert it.

Full Android guide

Security notes

.PGB is an image format (image/vnd.globalgraphics.pgb), so it is not meant to contain scripts or macros; the main risk is malformed-file vulnerabilities in image decoders/viewers.
If the file comes from an untrusted source, prefer opening it in a well-maintained viewer and avoid obscure or untrusted converters that may include unsafe bundled components.
Be cautious if a “.pgb” file prompts you to run an installer or executable—an image file should not require running programs to view it.

Complex decoders and untrusted media

Image, audio, and video decoders are large software surfaces; issues are uncommon for everyday files but show up with crafted files from unknown sources. Keeping the OS and media apps updated matters most; scanning is reasonable extra caution for downloads you cannot vouch for.

Avast

Avast offers free and premium antivirus software that protects against viruses, malware, ransomware, and phishing. Scan files before opening them to ensure safety.

Norton

Norton 360 delivers comprehensive antivirus protection, VPN, and identity theft monitoring. Scan files for threats before opening to keep your device secure.

We may earn a commission when you use affiliate links. This supports our free file extension guides.

Can't open this file?

These are the most common causes and fixes when .PGB files fail to open.

Common reasons

No app can open the .PGB file
Wrong file association (opens in the wrong program)
File is detected as .PGB but still fails to render

Fix steps

On Linux, check the detected MIME type; if it is image/vnd.globalgraphics.pgb, try a different installed image viewer/editor or a conversion workflow that supports that MIME type.
If mobile devices cannot open it, transfer the file to a desktop OS and try opening/converting it there.

OS-specific troubleshooting

What is a .PGB file?

.PGB is an image format identified in standards and system MIME databases as image/vnd.globalgraphics.pgb. On many systems, file association is driven by MIME type mappings (for example via shared-mime-info on Linux) rather than only the filename extension. If no installed software supports this specific image subtype, the file may not open even though it is “an image.”

Background

The .PGB extension is most reliably identified by its registered vendor media type image/vnd.globalgraphics.pgb in the IANA media types registry. In practice, this matters because many operating systems and applications use MIME types to decide which programs can open a file and how it should be handled.

On Linux desktops in particular, extension-to-MIME mapping and application association commonly flow through the shared-mime-info database. If your desktop environment does not know about *.pgb or does not have a viewer/decoder that supports it, you may see the file labeled as “unknown” or be prompted to choose an application.

Because support for less-common image subtypes varies widely between apps, you may need to try alternative image viewers on desktop systems or convert the file using a tool that can read the format. Mobile platforms often lack built-in support for uncommon vendor-specific image formats, so transferring to a desktop is often the most practical approach when a .PGB file will not preview.

Common MIME types: image/vnd.globalgraphics.pgb

Common .PGB issues

No app can open the .PGB file

Many systems do not include built-in decoders for uncommon vendor-specific image subtypes like image/vnd.globalgraphics.pgb, so the file may be treated as unknown or unsupported.

On Linux, check the detected MIME type; if it is image/vnd.globalgraphics.pgb, try a different installed image viewer/editor or a conversion workflow that supports that MIME type.
If mobile devices cannot open it, transfer the file to a desktop OS and try opening/converting it there.

Wrong file association (opens in the wrong program)

The extension may be mapped incorrectly or an application may have claimed the extension without actually supporting the format.

Change the default “Open with” association to a different image program and retry.
On Linux, update/rebuild MIME associations (shared-mime-info based) so *.pgb maps correctly to image/vnd.globalgraphics.pgb.

File is detected as .PGB but still fails to render

The file may be corrupted, truncated, or not actually a PGB image despite the extension.

Re-download or re-copy the file to rule out transfer corruption.
Verify the file type using a tool that reports MIME type/content signature; if it is not image/vnd.globalgraphics.pgb, treat it according to the detected type instead of the extension.

FAQ

What does .PGB stand for and what kind of file is it?

In practical terms, .PGB is an image file extension associated with the registered MIME type image/vnd.globalgraphics.pgb.

Is there an official MIME type for .PGB?

Yes. IANA lists the vendor media type image/vnd.globalgraphics.pgb.

Why won’t my phone preview a .PGB image?

Mobile platforms often only support a limited set of common image formats. If the subtype is uncommon (such as image/vnd.globalgraphics.pgb), the easiest solution is usually to transfer it to a desktop system for viewing or conversion.

Can I convert it by renaming .pgb to .png or .jpg?

No. Renaming only changes the extension; you need software that can decode the .PGB data and then export to PNG/JPEG.

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