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JSON to PNG Image
Render complete syntax-colored JSON as a PNG with an exact source and layout companion.
Optional UTF8 JSON file (overrides text), JSON source, Image width (pixels), Font size (pixels)
PNG, JSON
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Enter the displayed example values,or choose the local input files requested by the controls. Optional source files take precedence where labelled.
- Choose Render complete JSON and inspect the complete result and any reported limitations.
- Use Download result and each companion download link to save complete outputs. Reset clears output and restores example controls.
Examples
JSON source: {"name":"Ada","items":[1,true,null],"exact":9007199254740993}
Image width (pixels): 1000
Font size (pixels): 16
Limitations
- Render a complete syntax-colored JSON PNG with deterministic bounded wrapping for the actual browser/font environment. Strict lossless JSON admission preserves exact numeric tokens;pretty formatting uses2spaces and escapes line-separator/bidirectional controls. Include every normalized character in a complete source/layout companion,without ellipsis or truncation. Wrap whole grapheme clusters using native combined text measurements;admit actual horizontal/vertical glyph ink before canvas allocation. System Consolas/Courier/monospace fallback glyphs vary by browser/platform;Unicode glyph coverage and cross-platform pixel identity are not certified. One text/file source≤100,000characters/400,000UTF8bytes/20,000JSON values/40levels;formatted source≤200,000characters. Grapheme/merged segment≤1,024UTF16units. Width400–2,400,font12–24integer pixels,≤16million image pixels/16,384height. PNG/layout≤20MiB combined,layout4MiB. No HTML execution,font service,screenshot service or network;all processing stays in your browser.
- Complete outputs only. Unsupported or oversized input is refused. Follow the displayed job-specific bounds and format policies.
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