TOML ↔ JSON Converter (NO UPLOAD)

Convert TOML to JSON (and back) locally in your browser. Files never leave your browser. All processing happens client-side.

Input (TOML or JSON)
NO UPLOAD / Client-side only
Ready
Paste TOML or JSON and choose a conversion. Nothing is uploaded.
Free — Free: up to 200 KB input. Early access: free for now. No payment required. Paid plans coming soon.
    Output
    Converted

    What this tool does

    TOML is a common config format. This tool converts TOML ↔ JSON locally so you can debug configs or export structures without uploading secrets to third-party converters.

    Common pitfalls

    TOML has strict quoting/date rules, and keys can be nested via dotted notation. If conversion fails, validate the syntax and simplify to the smallest failing block.

    Privacy & Security
    All processing happens locally in your browser. Files are never uploaded.
    Next steps (intent layers)
    Go deeper from this head-term tool: topics, playbooks, trend reports, case studies, and research.
    TOML cluster
    Topics Playbooks Trend reports Case studies Research
    Other layers: Comparisons · Alternatives · Migrations · Benchmarks · Pillar · Guides search
    JSON cluster
    Topics Playbooks Trend reports Case studies Research
    Other layers: Comparisons · Alternatives · Migrations · Benchmarks · Pillar · Guides search
    FAQ

    Does this tool upload my files? No. All processing happens locally in your browser. Files are never uploaded.

    Is it free? Yes. Core workflow is free and privacy-first.

    What is it for? TOML, JSON workflows: validate, convert, and troubleshoot without uploads.

    Need help? Open the Topics and Guides entrypoints for common errors and fixes:

    Errors hub Topics Guides Privacy