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View a CDB file online, free

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

Drop your .CDB file here

Opens your .CDB file right here.

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Up to 50 MB · 160+ text and code extensions
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100% free. No limits on use

What you get for a .CDB 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 .CDB 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 .CDB file?

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

A .CDB file is a Symbian Phonebook Database developed by Nokia. It contains contact information and data stored in a database format. These files are typically opened using Nokia PC Suite or Nokisoft Noki.

Programs that open .CDB files

Windows
Nokisoft Noki, vCard (.vcf) target via export
.CDB format details
Full nameSymbian / Nokia Contacts Database
DeveloperNokia / Symbian
First releasedSymbian OS / Series 60 era (early-mid 2000s Nokia smartphones)
CategoryText & Code
MIME typeapplication/octet-stream

Related viewers

Every viewer is free to use.

Frequently asked questions

Is my .CDB 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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