Python Dict ↔ JSON Converter
Use Python Dict ↔ JSON Converter, review the result, and keep the original until the output is checked.
How to use Python Dict ↔ JSON Converter
- Paste a Python dictionary literal into the left pane - braces, quoted keys and True, False, None values as you would write them in code.
- Press the arrow to convert it to JSON, or paste JSON into the right pane and use the other arrow to get Python back.
- Compare the result against the original for any value that contained the words true, false or none inside text.
- Copy the output or Download python_dict.txt / data.json.
What Python Dict ↔ JSON Converter actually does to your file
This expects a literal, not the output of json.dumps and not a whole script: an assignment, an import, a tuple used as a key, a set() or a datetime(...) call all fail because there is no Python interpreter behind the page - a rewriting pass handles True, False, None, single quotes and trailing commas. That same rewriting is textual, so on the way back to Python it can capitalise the words true, false or none wherever they appear, including inside a sentence. Read the strings over, or convert the other direction in code.
Python Dict ↔ JSON Converter FAQ
What does Python Dict ↔ JSON Converter do?
Quickly serialize Python dictionaries to JSON and deserialize JSON to Python dicts online. Free, browser‑based, syntax highlighting
Which files work with Python Dict ↔ JSON Converter?
It takes a Python dictionary and returns JSON. The exact types and per-file limit are shown beside the controls.
Is conversion lossless?
Only when the target format can hold everything the source had. Converting to a lossy format, or to a format with fewer features, cannot be undone, so keep the original file.
Will my original file be changed?
No. You paste text or open a file to read it, the result appears in the other pane, and only what you copy or download leaves the page.
How is my file processed?
It is not uploaded. The processing is done locally by the parser bundled with this page, so the practical ceiling is your device's memory and the limit shown beside the uploader - no queue, no account, no copy on a server.
Is the Python Dict ↔ JSON Converter free?
Yes. The Python Dict ↔ JSON Converter is free with no trial limit, subscription, or watermark on downloads. You can use it for personal and commercial projects without creating an account.