Free JSON5 to JSON Converter: No Sign-up, Files Never Uploaded
Convert JSON5 to JSON free, right in your browser. There is no sign-up or login, no watermark, and nothing is uploaded: your data files never leave your device.
The file is parsed into a data tree and written out again as JSON.
This pair runs on code that is already in the page, so there is no extra engine to download.
- Free
- No sign-up
- Never uploaded
- No watermark
Your files are converted on your device and never uploaded.
How to convert
- Add your JSON5 files by dragging them onto the converter or by using the file picker.
- Check that JSON is the selected target format; it is already chosen on this page.
- Open the options if you want to change indentation, delimiter and root name, or keep the defaults.
- Press Convert and watch the progress shown for each file.
- Download each result, or take them all together as one ZIP when you converted several files.
Features
- Reads .json5 and writes .json.
- Free, with no watermark added to the result.
- No sign-up and no login.
- Your files are never uploaded and never leave your device.
- Batch conversion with a ZIP download for several results.
- The input is recognised by its content, not only by its file name.
Supported formats
About the formats
About JSON5
A superset of JSON that allows comments, trailing commas and unquoted keys.
Meant for hand-edited config files.
About JSON
JavaScript Object Notation: the usual format for web APIs.
Human-readable text; strict about quotes and commas.
JSON5 vs JSON
JSON5 does not support transparency, and JSON does not.
JSON5 files use the .json5 extension and JSON files use .json, so the converted file gets a new name with the new extension.
Privacy: how it works
- Your JSON5 files stay on your device. The page reads each file with the browser's file API, converts it with code running in the tab, and hands the result back as a download. No upload happens, so there is no copy of your file on our servers to protect, delete or leak.
- There is nothing to sign up for and no login. The converter does not ask for an email address, and it does not need to know who you are to do its job.
- You can check the claim yourself: open your browser developer tools, watch the Network tab while a file converts, and you will see no request that carries your file.
Tips
- Keep the original file; comments and key order are not always preserved between formats.
- Lists of records with the same fields convert most cleanly to tables.
- Validate the output with the tool that will read it.
- Check numbers and booleans in the result, since some formats store everything as text.
- This page converts one way only; JSON files cannot be turned back into JSON5 here.
Frequently asked questions
Is it really free?
Yes. There is no price, no trial, no credit card and no watermark added to your results. Ulkaa Tool does the conversion with your own device, so there is no server bill to pass on to you.
Are my files uploaded?
No. Your JSON5 files are read and converted inside your browser and are never sent to Ulkaa or to anyone else. The result is created on your device and you save it from there.
Do I need an account?
No. There is no sign-up and no login. Open the page, add your files and convert. An Ulkaa account is not needed for anything on this tool.
Is there a file size limit?
No limit is set by us. The real limit is your device: the conversion uses your own memory and processor, so very large files can be slow, and a very big batch may need to be split into smaller runs.
What is the difference between JSON5 and JSON?
JSON5 does not support transparency, and JSON does not. JSON5 files use the .json5 extension and JSON files use .json, so the converted file gets a new name with the new extension.
Can I convert many JSON5 files at once?
Yes. Add as many files as your device can handle. Each one is converted on its own and you can download them one by one or as a single ZIP.
Will anything be lost when I convert JSON5 to JSON?
The converter keeps the content of the file. Check the result once, since small differences in metadata or colour handling can happen between formats.
Can I convert JSON back to JSON5?
Not on this page. This conversion goes one way. Open the JSON page to see which formats it can be converted to.