All about CHLS Files

The CHLS file type is primarily associated with Charles Proxy.

CHLS	File extension: CHLS
	File type:	log file

What is a CHLS file?

CHLS files mostly belong to Charles Proxy. CHLS files are session log files created by Charles Proxy. They are generated in a Java environment and hold records of HTTP and HTTPS traffic.
These files are used mainly to record network sessions during web debugging. You can view the detailed communication between clients and servers with the help of Charles Proxy.
Key points provided by FilExt.com include:

Session Logging: Records request and response data in real time.

Java Serialization: Uses Java objects, making manual reading challenging without the right tool.

Network Debugging: Assists developers in analyzing web traffic and troubleshooting issues.

FilExt.com tip: To open and view a CHLS file, use Charles Proxy. More details are available on the official site at Charles Proxy.

How to open a CHLS file

You need a suitable software like Charles Proxy to open a CHLS file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your CHLS file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a CHLS file directly in the browser:. Just drag the file onto this browser window and drop it.

Online CHLS Text Viewer

Choose your .chls file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert CHLS files:

Charles Proxy
See the previous paragraphs to learn more about the main application. CHLS files are often referred to as Charles Proxy developers because this type of file is primarily created or used by this software.
Charles Proxy
A .CHLS file is a Charles Proxy session log file, storing data captured by Charles Proxy, a web debugging proxy application. It contains a record of HTTP and HTTPS traffic, including requests, responses, and headers, enabling developers to analyze network activity and diagnose issues in web applications. Charles Proxy uses a proprietary format based on Java serialization for these session files, allowing detailed inspection and manipulation of captured data within the Charles application. This format facilitates analysis of complex web interactions, aiding in debugging, performance testing, and security assessments. The .CHLS file extension specifically designates these session logs within the Charles Proxy environment. This file format is classified as Developer Files.

CHLS format details:

A file format defines how the data in the file is structured. The file format can be determined based on the file extension and the signature (the first few characters of a file). If the file extension does not match the file format, double-clicking on the file will cause an error upon opening. Knowledge is power - this also applies when dealing with unknown or faulty files. In the following you will find our evaluation of the CHLS files:

The file type with the extension 'CHLS' mainly uses a special format. The following file formats are most commonly found in CHLS files:

98% of all CHLS files save the data in Java file format. This format is used to save Java objects to a file (ex. save game state as file) via object serialization. Such a Java object may contain functions and data like settings, images or videos. If you open these files in a text editor, you will see only illegible characters. The files are 24 KB to 15 MB in size, with a median of 1 MB. The file type is a fairly new file format. Certain words are almost always found in the files, such as childrent, com.xk72.charles.model.ModelNode, com.xk72.charles.model.Session, Ljava/util/List;xpsr, java.util.ArrayListx, sizexp and whenCreatedxr. Such CHLS files store data about error, android, session, logs, login, profile, pause, cart, flow, home and user.

The remaining 2% of all CHLS files are different files with different signatures. They are often associated with response, message, payment, banner, search, audio, issue, promo, start, chat or team. You can get all the details of your CHLS file by dragging it onto this page or by clicking the button "Choose your .chls file to analyze" above.

Technical Data for CHLS File Extension

File classification:

Developer

Related files:

pcap, dmp, trace, chl, chi, chs, saz, cls, hcy, log, txt

a chls log file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with CHLS files

Associate the CHLS file extension with the correct application.
Update your software that should actually open log files. Because only the current version supports the latest CHLS file format. Search, therefore, e.g. on the manufacturer website after an available Charles Proxy update.
To make sure that your CHLS file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .CHLS file online - secure, fast, and no downloads needed.