JSON Unescape & Cleaner Articles

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Why JSON.parse() Fails for Large Files — Streaming Parsers, JSON Lines, and When to Use Each

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.

Jun 23, 2026
JSON Inside JSON: Why Some Fields Are Strings Containing Their Own JSON, and How to Parse Them

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.

Jun 15, 2026
Why JSON Gets Double-Encoded — and How to Detect and Fix It

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.

Jun 9, 2026