English

View a PI4 file online, free

Open and read .PI4 files online. View source, logs and text with syntax highlighting, search and line numbers, free.

Drop your .PI4 file here

Opens your .PI4 file right here.

Choose file
Up to 50 MB · 160+ text and code extensions
Instant. Opens in seconds
No sign-up. Just open it
100% free. No limits on use

What you get for a .PI4 file

We don't have a dedicated viewer for this format, so we identify and inspect it instead — honestly, only what can be read from the file.

01

Drop your .PI4 file

Choose it or drag it in. It's read right here in your browser.

02

We identify it

We read the magic bytes to tell what the file really is, its MIME type, and whether the name matches the contents.

03

See the details

Any metadata we can extract (dimensions, EXIF/GPS, document author and dates), a hex view, plus readable text and strings found inside.

What is a .PI4 file?

Plain text that programs, servers and people write every day.

.PI4 files are DEGAS Image files, which are a type of raster image developed by Atari. They contain bitmap graphics data and are primarily used on Atari computer systems. These image files can be opened and viewed on modern systems using XnView.

Programs that open .PI4 files

Windows
XnView
macOS
XnView
Linux
XnView
.PI4 format details
DeveloperAtari

Related viewers

Every viewer is free to use.

Frequently asked questions

Is my .PI4 file uploaded anywhere?

No. The file is read and highlighted for you.

Why do some characters look wrong (é, ł)?

That usually means the file was saved in one encoding and opened in another. We detect UTF-8, UTF-16 and the Windows-1250/1252 code pages automatically and show which one was used.

Can it handle huge log files?

Yes, up to 50 MB. Only the lines on screen are drawn, so scrolling stays smooth. Syntax colours are switched off for files over 1.5 MB to keep things fast.

How do the log level filters work?

We find levels like ERROR, WARN, INFO and DEBUG on each line. Lines without a level, such as stack traces, stay with the entry above them, so filtering to errors keeps the full trace.

Can I edit the file?

This is a viewer. To change code, download it or copy it into your editor. Converting encodings and line endings is planned.

Was this tool helpful?

Your rating helps us decide which tools to improve next.

Be the first to rate this tool.
Found a problem?