How to open .PGB files on iOS
To open .PGB files on 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.
Step-by-step instructions
- 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.
Common 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.
Still can’t open your .PGB file?
Recover a deleted or lost .PGB file
If the file was deleted by mistake or the drive was formatted, data recovery software may be able to get it back. Stop writing to that drive right away, because new data can overwrite what you want to recover.
Windows software that recovers deleted or lost files from PCs and external drives such as HDDs, SSDs, USB drives and memory cards, after deletion, formatting or a crash.
Wondershare RecoveritWindows and Mac software that recovers deleted or lost files from computers and external drives such as HDDs, SSDs, USB drives and SD cards.
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Security note
.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.