JSON Unescape & Cleaner
Articles, guides, and in-depth tips for the JSON Unescape & Cleaner — everything you need to get the most out of it.
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Why \n Shows Up Literally in Your JSON Output — Escape Sequences, Encoding Layers, and How to Debug Them
Why JSON.parse() Fails for Large Files — Streaming Parsers, JSON Lines, and When to Use Each
Standard JSON.parse() requires the complete document before returning anything — which fails for large files that exceed memory and real-time streaming APIs that never "finish." Here's how streaming JSON parsers work (event-driven, token-by-token), JSON Lines as a simpler alternative that works with standard parsers, the specific use cases where streaming is necessary vs over-engineering, and when high-volume data transfer argues for protobuf instead of JSON entirely.
JSON Inside JSON: Why Some Fields Are Strings Containing Their Own JSON, and How to Parse Them
A field containing `"{\"name\":\"Alice\"}"` isn't broken — it's JSON stored as a string, inside a JSON document, a deliberate pattern in logging systems, GraphQL, and webhook relays. Here's how to recognize this pattern by its escaped quotes, why it requires two separate parsing steps, and how to tell when it's a legitimate design choice versus an unnecessary double-stringification bug.
JSON Patch, Merge Patch, JSON Pointer, and JSON Path: The Standards Most Developers Don't Know
JSON Patch (RFC 6902) sends a list of operations (add, remove, replace, test) to modify a resource atomically. JSON Merge Patch (RFC 7396) uses a simpler merge rule. Here's both standards with examples, JSON Pointer path syntax, JSON Path for querying, and why the `test` operation enables optimistic concurrency.
JSON Parsing in Python, JavaScript, Go, and Ruby: Edge Cases That Cause Real Bugs
Python's None vs JSON null, JavaScript's integer precision limit at 2^53, Go's strict struct tags, and Ruby's symbolize_names security concern are real production pitfalls. Here's the JSON parsing edge cases in each major language and how they cause bugs at API boundaries.
Why JSON Gets Double-Encoded — and How to Detect and Fix It
Double-encoded JSON — JSON strings where objects were expected — happens when serialisation runs twice at different layers. Here's how it happens, how to detect it, how to fix it programmatically, and what the common Unicode escape sequences mean.
JSON Unescape & Cleaner — Fix Escaped and Double-Encoded JSON Instantly
Learn what causes JSON to become escaped or double-encoded, how to recognise it, and how to use a free JSON unescape tool to clean up messy JSON from logs, APIs, and databases instantly.
