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Open a VIFF file online, free

Open .VIFF files online, free. Nothing to install.

Drop your .VIFF file here

Opens your .VIFF 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

How to open a code or text file online

Three steps, a few seconds, no software.

01

Open your .VIFF file

Drop it on the box, choose it from your device, or paste the text straight in.

02

View it instantly

Your .VIFF file opens neatly formatted with line numbers.

03

Search, copy or download

Search the text, jump to any line, then copy what you need or download a clean copy.

What is a .VIFF file?

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

A .VIFF file is a raster image saved in the Visualization Image File Format developed by AccuSoft Pegasus. These files contain digital image data used for visualization and analysis. You can open this format using software such as XnView, VisiQuest, and Able Batch Converter.

Programs that open .VIFF files

Windows
VisiQuest, XnView, Able Batch Converter
macOS
XnView
Linux
XnView, VisiQuest
.VIFF format details
DeveloperAccuSoft Pegasus

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Every viewer is free to use.

Frequently asked questions

Is my .VIFF 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.

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