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View a CNG file online, free

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

Drop your .CNG file here

Opens your .CNG file right here.

Choose file
Up to 50 MB · 160+ text and code extensions
Instant. Opens in seconds
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100% free. No limits on use

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

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

A .CNG file is an encrypted data format categorized as an encoded file. Developed by Vassil Arabadjiev, these files contain protected information that has been secured using the CryptoNG software. Users can access or decrypt the contents of these files specifically through the CryptoNG application.

Programs that open .CNG files

Windows
CryptoNG
.CNG format details
DeveloperVassil Arabadjiev

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Frequently asked questions

Is my .CNG 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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