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JSON Screenshot Generator

Free JSON screenshot generator. Paste JSON and instantly create beautiful, syntax-highlighted code screenshots with customizable themes, fonts, line numbers, and export as PNG. Perfect for documentation, presentations, and social sharing.

JSON Input
Ready
Style
Preview

About JSON Screenshot Generator

Sharing JSON in docs, slides, or social posts usually means ugly monospace blocks or fragile screenshots from your editor. JSON Screenshot Generator gives you a dedicated, consistent way to turn raw JSON into polished, syntax-highlighted images — with themes, fonts, and layout options that actually look good.

Paste JSON, pick a theme, adjust the look, and download a crisp PNG. No uploads, no accounts, no watermarks. Everything renders client-side.

Features

  • Instant syntax highlighting: Colors for keys, strings, numbers, booleans, null, and punctuation across 12 built-in themes (6 light, 6 dark).
  • Live editor: Paste or type JSON with real-time validation and error markers. Tab key indents, Shift+Tab unindents.
  • Customizable chrome: Choose window style (macOS, Windows, Linux, minimal, none), show/hide line numbers, toggle invisible characters.
  • Font control: 8 programming fonts including JetBrains Mono, Fira Code, Source Code Pro, Monospace, with size 10–18px.
  • Padding & dimensions: Adjust horizontal/vertical padding, max width, and line height for the perfect crop.
  • 2x retina export: PNG downloads at 2x scale for sharp display everywhere. Transparent or solid background.
  • Copy to clipboard: One-click copy the generated image directly to clipboard for pasting into Slack, Notion, Figma, etc.
  • Keyboard-driven: Full shortcut support for power users.
  • Privacy-first: Zero server round-trips. Your data stays in your browser.

How to Use

  1. Paste your JSON into the editor pane. The validator runs instantly — red markers show syntax errors.
  2. Pick a theme from the dropdown (GitHub, Dracula, Monokai, Solarized, VS Code, One Dark, and more).
  3. Adjust appearance: font, size, line numbers, window chrome, padding, invisible chars.
  4. Click Generate (or press Ctrl/Cmd + Enter) to render the screenshot in the preview.
  5. Download PNG or Copy to Clipboard. The image is 2x resolution for retina clarity.
  6. Optional: Toggle "Transparent background" for layering over colored slides or docs.

Examples

Example 1 — API response for docs. Paste a real API response, choose GitHub Light theme, enable line numbers, macOS chrome, 14px JetBrains Mono. Download and drop into your OpenAPI spec or README.

Example 2 — Social media share. Compact JSON config, Dracula theme, no line numbers, minimal chrome, transparent background. Copy to clipboard → paste into Twitter/X or LinkedIn composer.

Example 3 — Slide deck. Large nested JSON, Solarized Light, 12px Fira Code, Windows chrome, extra vertical padding for breathing room. Export PNG at 2x — stays crisp on 4K projectors.

Example 4 — Team wiki / Notion. Webhook payload example, One Dark theme, line numbers on, invisible chars off, Linux chrome. Copy → paste directly into Notion page.

Benefits

  • Consistent branding: Same theme, font, and chrome across every JSON screenshot in your project.
  • No editor setup: Works in any browser — no IDE, extensions, or config needed.
  • Retina-ready: 2x PNG export looks sharp on high-DPI displays without manual scaling.
  • Fast iteration: Live preview means you tweak and re-export in seconds.
  • Zero friction: No login, no cloud, no tracking. Open, paste, download, close.

Frequently Asked Questions

What JSON formats are supported?
Any valid JSON including objects, arrays, strings, numbers, booleans, and null. The tool automatically detects and validates JSON syntax before generating the screenshot.
Can I customize the appearance?
Yes. Choose from multiple syntax highlighting themes (light/dark), font families, font sizes, line numbers, window chrome styles, and padding. You can also toggle invisible characters and bracket matching.
What export formats are available?
PNG is the primary format with transparent or solid background options. The image is generated at 2x resolution for crisp display on retina screens.
Is there a size limit for the JSON?
The tool handles JSON up to ~500KB comfortably. Very large JSON may take longer to render and produce tall images. For massive files, consider using a dedicated code-to-image tool with scrolling support.
Does the tool send my JSON anywhere?
No. All processing happens in your browser. Your JSON never leaves your machine. The screenshot is generated client-side using canvas.
Can I use this for API documentation?
Absolutely. The tool is designed for exactly this use case — creating consistent, professional-looking JSON screenshots for API docs, tutorials, blog posts, and team wikis.
Are there keyboard shortcuts?
Ctrl/Cmd + Enter generates the screenshot. Ctrl/Cmd + S downloads it. Escape closes modals. Tab indents in the editor.