The short version
CodeBeautify is one of the largest online tool collections in existence — JSON, XML, YAML, SQL, image conversion, code beautifiers for a dozen languages, and much more. As a bookmark for "I need to convert something to something else," it is genuinely useful.
Its processing model is also better than many people assume. Its privacy policy states that "99% of our tools are doing processing on browser using JavaScript" and that it does "not store any data unless user does by Save Online feature." Credit where due — that is a reasonable architecture, honestly described.
The problem is the exception.
The Save Online feature
CodeBeautify's saved documents get URLs of the form codebeautify.org/jsonviewer/<id>. Those URLs are publicly accessible and search-engine indexed — you can find real examples simply by searching for that path pattern, and you will get back other people's saved JSON.
CodeBeautify's own policy warns about this:
Do not save password, keys, real production data and confidential information.
That warning is appropriate and we credit them for publishing it. But there is a gap between a warning in a policy page and what a developer does at 2am while debugging: the Save button is right there in the interface, and its consequences — a permanent, public, indexed URL — are not obvious from the button itself.
Two additional exceptions are documented in the same policy: URL loading and file upload, where "data traverse between server and client." The policy says uploaded files are deleted immediately or by a cron job. So pasting into the textarea is browser-local; uploading a file is not.
Where CodeBeautify is genuinely better
Sheer breadth. If you need JSON to a C# class, or a SQL formatter, or an image converter, CodeBeautify probably has it. Our ~95 tools are focused on developer and file utilities; theirs sprawl much wider.
Tree and table views. Exploring a large document with collapsible nodes, or viewing an array of objects as a sortable table, is a real capability we do not have.
File upload and URL loading. Convenient when the JSON is in a file rather than your clipboard — with the caveat above about where it goes.
Code generation. Turning JSON into typed classes for Java, C#, or TypeScript is a genuinely useful feature.
Where we are better
No save feature at all. We have nothing that can accidentally publish your data, because we have nothing that stores it. That is a design decision rather than a promise, which makes it more reliable than a warning.
Substantially lighter page. CodeBeautify carries a heavy ad load. Ours is light, which means less layout shift, faster interaction, and a shorter path from paste to result.
Error messages that name the cause. Trailing comma before "}" (line 3, column 9). JSON does not allow a comma after the last item. — rather than a raw character offset. See our errors guide.
Focus. One page that does three things well, rather than a directory you have to navigate. That is a preference rather than an objective advantage — but for the specific job of formatting JSON quickly, focus wins.
How to choose
Use CodeBeautify if you need its breadth, a tree view, or code generation — and you do not press Save on anything confidential.
Use ours if you want a fast, light, focused formatter with no save feature and no ambiguity about where the data goes.
Use jq if the file is large or the job is repeated. No browser tool handles multi-gigabyte documents or fits into a shell pipeline.
A general rule for online JSON tools
Before pasting into any of them, ask two questions: does this tool state where processing happens? and does it have a save or share feature I might press by accident?
CodeBeautify answers the first well and has a real risk on the second. We have no save feature and state the first plainly. Neither of us should be trusted with a live production credential — for that, rotate anything that has been through any third-party tool, ours included.