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View a RBF file online, free

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

Drop your .RBF file here

Opens your .RBF file right here.

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Up to 50 MB · 160+ text and code extensions
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What you get for a .RBF 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 .RBF 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 .RBF file?

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

A .RBF file is a Windows Installer Rollback File developed by Microsoft for use during software installations. It contains backup data used to restore a system to its previous state if an installation fails. These files are typically managed and opened by the Windows Installer and the Microsoft Windows operating system.

Programs that open .RBF files

Windows
Microsoft Windows (automatic)
.RBF format details
Full nameWindows Installer Rollback File
DeveloperMicrosoft Corporation
First released1999 (Windows Installer 1.0, Windows 2000)
CategoryText & Code
MIME typeapplication/octet-stream

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Every viewer is free to use.

Frequently asked questions

Is my .RBF 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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