Free · no signup · browser-local

Extract JSON from an AI or LLM Response

Find complete JSON objects and arrays inside an AI response. Select a candidate, inspect its position and copy or download JSON without silently repairing it.

Browse all tools →

Browser-local processing · no model calls · no input storage

Configure and process

Scan text for complete outermost JSON objects and arrays. Select a candidate after scanning. Braces in JSON strings are handled; invalid or incomplete containers are reported without repair.

Raw and formatted downloads both preserve numeric spellings, including integers beyond JavaScript precision. Scalar values are outside this extractor’s scope. Lines are 1-based; columns are 1-based UTF-16 code units. Offsets are 0-based UTF-16 code units; end is exclusive.

Your output

extracted.json

Process the input to preview, copy and download a result.

Local preparation only. No remote fetching, code execution, model grading or platform eligibility checks. Editing an input invalidates previous results and pending file exports.

Getting started

Paste an existing model response, run extraction and select one complete candidate. Inspect its original position, then copy or download raw or losslessly formatted JSON, or export all candidates in a numbered ZIP with positions.

Before you use the result

Only complete outermost objects and arrays are extracted. Incomplete or malformed JSON is not repaired, and schema validity, factual accuracy and safe execution are not established.

Try an example

From Here is the result: followed by a JSON code fence, extract the complete object. If two objects are present, select which one to export.

How it works

A bounded, string-aware container scanner and JSON validation locate complete candidates. Token-level formatting preserves number lexemes, including large integers and exponent notation. Maximum input: 500 KB UTF-8; JSON depth: 24.

Frequently asked questions

Find complete JSON objects and arrays inside mixed response text, select a candidate and export without rounding numeric values.

How do I use AI Response JSON Extractor?

Paste an existing model response, run extraction and select one complete candidate. Inspect its original position, then copy or download raw or losslessly formatted JSON, or export all candidates in a numbered ZIP with positions.

Does this tool upload my data?

Inputs and files are processed in your browser. Page-view analytics do not contain your tool input.

What should I check before using the result?

Only complete outermost objects and arrays are extracted. Incomplete or malformed JSON is not repaired, and schema validity, factual accuracy and safe execution are not established.

Related tools

AI Response Text CleanerApply explicit outer fence, whitespace and newline rules to existing AI text while comparing the original and cleaned result.JSON Schema BuilderInfer a draft 2020-12 JSON Schema from sample JSON and validate another value locally.Agent Output Evaluation RunnerCheck existing model outputs with deterministic assertions, Unicode lengths and normalization settings.