Chrome's experimental JSON viewer is enabled via chrome://flags. 1. Enter chrome://flags in the address bar, search for JSON and enable the "Enable improved JSON viewer" option, which will take effect after restarting the browser; 2. After enabling, access the interface returning to JSON to view the formatted structure, supporting collapse, syntax highlighting and line number display; 3. If it does not take effect, it may be due to a Content-Type error, an illegal JSON format or a too old Chrome version, it is recommended to use the latest version of Chrome Canary or Dev version to ensure compatibility.
Chrome's experimental JSON viewer is actually a very practical gadget, especially for developers, it can save a lot of trouble when debugging API interfaces or viewing return data structures. However, it is not enabled by default and needs to be enabled manually.

1. How to enable Chrome's experimental JSON viewer
When you open a link in your browser that returns JSON data, Chrome may simply display the original text by default. To enable a more friendly viewing interface, you must enter chrome://flags
setting.
The steps are as follows:

- Enter in the address bar:
chrome://flags
- Search keywords:
JSON
- Find the option: Enable improved JSON viewer
- Set it to Enabled
After saving, restarting the browser will take effect.
2. Use JSON viewer to view data
After enabling it, access an interface that returns JSON format (such as /api/user
), and you can see the formatted structure instead of a pile of text that is crowded together.

Features include:
- Supports folding and expansion
- Automatically highlight different types of data (strings, numbers, boolean values)
- Display line numbers to facilitate positioning issues
If you are doing front-end development or debugging the RESTful interface, this function will allow you to more intuitively confirm whether the data returned by the back-end meets expectations.
3. Frequently Asked Questions and Precautions
Sometimes it doesn't respond even if enabled, which may be the following reasons:
- The website has set the wrong Content-Type (for example, it returns JSON but declares it as text/html)
- The returned content is not a legal JSON format, resulting in parsing failure
- The Chrome version is too old and does not support this feature
It is recommended to use the latest Chrome Canary or Dev version to ensure better compatibility.
Basically that's it. Although it seems simple, many novices don’t know how to turn it on at the beginning, which leads to manually copying it to the formatting tool to view the data. In fact, the browser has prepared a lightweight and convenient viewing method for you.
The above is the detailed content of How to use Chrome's experimental JSON viewer. For more information, please follow other related articles on the PHP Chinese website!

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