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Open BracketView
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AI JSON Fixer
Fix Broken JSON Online with AI
Fix broken JSON online with AI. Repair missing brackets, trailing commas, unquoted keys & truncated payloads instantly. Free AI JSON syntax repair — no install.
Malformed JSON — from hand-edited configs, truncated API responses, or copy-pasted payloads — often breaks standard parsers with a single missing bracket or trailing comma. BracketView's AI JSON Fixer analyzes broken JSON and automatically repairs syntax errors while preserving your original structure and values as closely as possible. Paste JSON that fails to parse, click Fix, and get valid, well-formed output in seconds — no manual bracket-hunting required. The AI runs as a request to BracketView's servers, so it's not part of the 100% client-side core toolset; review the privacy policy before repairing sensitive data.
Key features
- AI-powered repair for missing or mismatched brackets
- Fixes trailing commas and unquoted keys automatically
- Handles unescaped characters and truncated payloads
- Preserves original structure and values where possible
- Pairs with the real-time validator to confirm the fix
- Upload .json files up to 5 MB (50 MB on Pro)
- Copy repaired JSON in one click
How to
How to Fix Broken JSON Online with AI Using BracketView
Repair malformed JSON in three steps using BracketView's AI JSON Fixer.
02
Paste your broken JSON
Paste JSON that fails to parse — the validator flags it as invalid.
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Click AI Fix
Run the AI JSON Fixer to repair syntax errors and get valid, formatted output.
Frequently asked questions
How does the AI fix broken JSON?
BracketView's AI JSON Fixer analyzes malformed JSON — missing brackets, trailing commas, unquoted keys, unescaped characters, and truncated payloads — and reconstructs valid, well-formed JSON while preserving your original data and structure as closely as possible.
Is my JSON data sent to a server?
For AI-assisted repair specifically, yes — the JSON is sent to process the AI request. Core tools like the formatter and validator remain 100% client-side. Review the privacy policy before repairing sensitive data with AI.
What kinds of JSON errors can it fix?
The AI Fixer handles common syntax issues: missing or mismatched brackets and braces, trailing commas, unquoted keys, invalid escape sequences, and truncated or cut-off payloads.
Is the AI JSON Fixer free?
Yes. Free accounts get 20 AI actions per month, including AI JSON repair. Pro unlocks unlimited AI actions.
Will fixing my JSON change my data?
The AI Fixer aims to preserve your original keys, values, and structure exactly — it only corrects syntax errors that prevent parsing. Always review the repaired output before using it in production.
Related tools
Explore more JSON tools in the BracketView workspace.