.PT file extension

To open .PT files on Windows, check the file’s origin (what program or project produced it). If you don’t know, do not rename it—first try to identify the file type using a file identification tool (by content/MIME), not just the extension.

To open a .PT file, first determine whether your system identifies it as application/vnd.snesdev-page-table (a SNESdev “page table” data file). If it is, open it with the software/workflow that produced it; otherwise treat it as an ambiguous “.pt” file and inspect it safely (e.g., as plain data) before choosing an app.

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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 .PT files

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

Windows

Check the file’s origin (what program or project produced it). If you don’t know, do not rename it—first try to identify the file type using a file identification tool (by content/MIME), not just the extension.
If it’s identified as application/vnd.snesdev-page-table, open/import it using the same SNESdev-related toolchain/workflow that created it (or the project documentation that references a “page table”).
If no associated app exists, open it in a safe inspector (hex/text viewer) to confirm it’s data and not an unrelated “.pt” format.

Full Windows guide

Mac

Confirm what generated the file (project/toolchain). If unknown, identify the file by content (MIME/type detection) rather than relying on “.pt”.
If it matches application/vnd.snesdev-page-table, open it using the creator’s workflow/tooling referenced by the project; macOS generally won’t include a default viewer for this niche format.
If it won’t open, inspect it as raw data (text/hex) and consult the project/toolchain documentation that expects a page-table input.

Full Mac guide

Linux

Use your desktop’s file properties (or a file identification command) to see whether it’s recognized as application/vnd.snesdev-page-table; Linux desktop identification commonly relies on the shared-mime-info database.
If it is that MIME type, open it with the toolchain/workflow that produced it (often via an import step or as an input file to a build process).
If it’s misidentified or unknown, update your shared-mime-info database (distro updates) and re-check, then inspect as raw data if needed.

Full Linux guide

iOS

iOS usually won’t have a native viewer for application/vnd.snesdev-page-table; use the Files app to share/send the .PT file to a desktop computer for proper handling in the original toolchain.

Full iOS guide

Android

Android typically won’t have a dedicated handler for application/vnd.snesdev-page-table; transfer the .PT file to a desktop system and open it with the workflow/tooling that created it.

Full Android guide

Security notes

.PT (application/vnd.snesdev-page-table) is a data format; it typically isn’t “executable,” but opening it still relies on parsers—only use trusted tools and inputs because malformed data can trigger vulnerabilities in file-parsing software.
Because “.pt” is ambiguous, treat unknown .PT files cautiously: confirm the detected MIME/type before opening, to avoid accidentally launching an unrelated application with a potentially unsafe file type.
Prefer workflows that import/validate data rather than automatically executing any embedded instructions; if a tool offers scripting or build hooks, review those settings when using untrusted inputs.

If you did not expect this file

This extension is usually plain data, text, or structured content—not a program by itself. The practical risk is social engineering (a scam attachment or misleading filename). For trusted senders you rarely need heavy-handed antivirus wording; use these tools when you want an extra check on unexpected downloads.

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 .PT files fail to open.

Common reasons

The .PT file won’t open (no associated app)
File type confusion: “.pt” is ambiguous
Linux desktop shows the wrong type or generic “data”

Fix steps

Find out what toolchain or project produced the file and open/import it there (the creator workflow is usually required).
On Linux, verify the detected MIME type (shared-mime-info) and confirm it’s application/vnd.snesdev-page-table before searching for supporting tools.
If the source is unknown, inspect it safely as raw data (text/hex) to confirm it’s not a different “.pt” format.

OS-specific troubleshooting

What is a .PT file?

.PT is mapped in MIME databases to the vendor type application/vnd.snesdev-page-table, indicating a specific data format (a “page table”) used by SNESdev-related tooling/workflows. On Linux desktops, extension-to-MIME detection commonly relies on the freedesktop.org shared-mime-info database, while some systems use a mime.types mapping. Because “.pt” is a short, ambiguous extension, correct identification is best done by MIME/type detection rather than by the extension alone.

Background

In MIME registries and common MIME mapping files, “.pt” is associated with the vendor media type application/vnd.snesdev-page-table. This points to a specialized data file used in a particular development ecosystem rather than a broadly supported document format.

On Linux and many desktop environments, file type recognition is often driven by the shared-mime-info database, which defines MIME types and filename patterns (“globs”) that associate extensions like *.pt with a MIME type. Separately, mime.types files (as packaged by some distributions) also map MIME strings to extensions; Debian’s mapping explicitly ties application/vnd.snesdev-page-table to the extensions “ptrom” and “pt.”

Practically, this means most general apps won’t know what to do with a .PT file. The best route is to open it within the same toolchain that generated it or, if you’re unsure what it is, use safe inspection techniques (identify the MIME type, examine it as raw data/text) before trying any specialized tools.

Common MIME types: application/vnd.snesdev-page-table

Common .PT issues

The .PT file won’t open (no associated app)

application/vnd.snesdev-page-table is a niche vendor type, so most systems don’t ship with a default app to open it directly.

Find out what toolchain or project produced the file and open/import it there (the creator workflow is usually required).
On Linux, verify the detected MIME type (shared-mime-info) and confirm it’s application/vnd.snesdev-page-table before searching for supporting tools.
If the source is unknown, inspect it safely as raw data (text/hex) to confirm it’s not a different “.pt” format.

File type confusion: “.pt” is ambiguous

The extension is short and can be used by unrelated formats; relying on the filename alone can lead to using the wrong software.

Identify the file by content/MIME type; look specifically for application/vnd.snesdev-page-table as the known mapping in MIME registries.
Ask the sender or check the project repository/documentation for how the .PT file is used (input/output of a build step).

Linux desktop shows the wrong type or generic “data”

MIME detection can depend on an up-to-date shared-mime-info database and the filename glob mappings it contains.

Update your system’s shared-mime-info package and re-check file properties/type detection.
If needed, confirm that your distro’s MIME mappings include application/vnd.snesdev-page-table for *.pt (some systems also rely on mime.types mappings).

FAQ

What does a .PT file usually mean?

In MIME mappings, .PT is associated with the vendor type application/vnd.snesdev-page-table (a SNESdev “page table” data file). However, the extension is ambiguous, so you should confirm the MIME/type by content.

How do I know if my .PT file is application/vnd.snesdev-page-table?

Check the file’s detected type using your OS file properties or a file-identification tool that inspects content/MIME. On Linux desktops, this typically uses the shared-mime-info database.

Can I convert a .PT file by renaming it?

No. Renaming only changes the extension; it doesn’t convert the underlying format. Use the toolchain that created the file to export/convert, if it supports that.

Why doesn’t my phone open .PT files?

application/vnd.snesdev-page-table is a specialized data type, and mobile OSes usually don’t include viewers or importers for it. Transfer it to a desktop system and open it with the creating workflow/tooling.

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