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View a ACCDR file online, free

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

Drop your .ACCDR file here

Opens your .ACCDR 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 .ACCDR 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 .ACCDR 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 .ACCDR file?

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

An ACCDR file is a Microsoft Access database that has been set to run in a locked-down, runtime-only mode. It contains data and application logic that can be opened and executed using Microsoft Access, Microsoft Office, or Office 365.

Programs that open .ACCDR files

Windows
Microsoft Access, MDB Viewer Plus, LibreOffice Base, Microsoft Access Runtime
.ACCDR format details
Full nameMicrosoft Access Runtime Database
DeveloperMicrosoft
First released2007 (Access 2007, alongside the ACCDB/ACE format)
CategoryText & Code
MIME typeapplication/msaccess
Signature00 01 00 00 53 74 61 6E 64 61 72 64 20 41 43 45 20 44 42 "Standard ACE DB" at offset 4 (identical to .accdb)

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Frequently asked questions

Is my .ACCDR 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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