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View a SIMS3PACK file online, free

Open and read .SIMS3PACK files online. View source, logs and text with syntax highlighting, search and line numbers, free.

Drop your .SIMS3PACK file here

Opens your .SIMS3PACK 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 .SIMS3PACK 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 .SIMS3PACK 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 .SIMS3PACK file?

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

A .SIMS3PACK file is a game data format developed by Electronic Arts for use with The Sims 3. These files typically contain custom content or game assets such as characters, clothing, and objects. They are primarily opened using The Sims 3 game launcher or the TSR Merlin utility.

Programs that open .SIMS3PACK files

Windows
s3pe (Sims 3 Package Editor), Sims3Pack Multi-Extracter (Delphy), The Sims 3 (Launcher)
macOS
The Sims 3 (Launcher)
.SIMS3PACK format details
Full nameThe Sims 3 distributable content package (.sims3pack)
DeveloperElectronic Arts / Maxis
First released2009 (The Sims 3)
CategoryText & Code
MIME typeapplication/octet-stream
Signature44 42 50 46 "DBPF" - Database Packed File (Maxis container)

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Frequently asked questions

Is my .SIMS3PACK 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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