Can these tools handle large JSON files?

Yes, up to what the browser can hold in memory. A 20 MB payload analyzes in a few seconds on a modern laptop. Past about 50 MB, browser responsiveness drops; for very large datasets, a local tool like jq or a Python script is faster.

Will censor-json catch every sensitive field in my payload?

It catches the common ones (password, token, api_key, secret, access_token, authorization, email, ssn, and similar) by key name. If your schema uses custom key names like clientSecret or internal_code, add them to the custom-redact list before processing. Visual review afterward is still recommended for high-stakes redaction.

What is the difference between JSON Analyzer and just opening the file?

JSON Analyzer gives you quantitative signals: depth, key count, type mix, complexity warnings. Opening the file shows you the content. Use the analyzer when you are dealing with an unfamiliar payload and want to know what to expect before you scroll through it.

Does the screenshot generator support syntax highlighting themes?

Yes. Dark mode (default) and light mode, both with standard JSON token colors (strings, numbers, keys, booleans, null). Font size and canvas width are configurable. Output is PNG at 1x display resolution.

Are my JSON payloads uploaded anywhere?

No. All four tools process JSON entirely client-side. Nothing is sent over the network. Safe to paste production API responses, JWT payloads, or webhook bodies. The browser network tab confirms zero requests during analysis, decoding, or rendering.

JSON Tools

JSON tools handle the inspection and preparation work that happens before a payload goes into a ticket, a blog post, a log file, or a production code review. 15 browser-based utilities: count keys and measure depth before you trust a blob is well-formed, decode Base64 wrappers from API responses, redact secrets and PII before sharing, and render a clean screenshot suitable for documentation.

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Analyze JSON Online and Validate JSON Structure →

Base64 to JSON Decoder →

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Convert JSON to TSV →

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Edit JSON →

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Highlight JSON Syntax Online →

Minify JSON →

Obfuscate JSON →

Prettify JSON →

Unescape JSON →

URL Decode JSON →

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