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Local canvas render

Code Screenshot Beautifier — turn code into a shareable image (carbon / ray.so style)

The code screenshot beautifier renders your pasted code snippet into a clean, syntax-highlighted image: choose the midnight, night or day color theme and a background, and optionally add a filename. The image includes a mac traffic-light window frame, line numbers, fixed padding, rounded corners and a soft shadow. Export a 2× PNG for tweets, blogs or docs. It renders locally in your browser; your code is never uploaded (snippets often contain keys and internal implementation that shouldn't go to a server first).

Code Screenshot Beautifier 会在浏览器里生成一张可交付的样机图：放入文件、调好外框与画布，然后导出 PNG。文件不上传，也不加水印。

Input
screenshot/art
Proof
frame + crop
Output
PNG export
blank developer monitor on a dark desk with teal screen glow
Scene illustrationPNG
FrameCropSpec
Theme
Background
Filename

Code Screenshot Beautifier

  1. 1Paste your code snippet into the editor.
  2. 2Pick a color theme (midnight / night / day).
  3. 3Choose a background and optionally add a filename.
  4. 4Click "Download 2x PNG"; you can also use "Copy" when your browser supports copying images to the clipboard.

Code Screenshot Beautifier

  • Local rendering: your code isn't uploaded — snippets often contain API keys, internal logic and unreleased implementation.
  • Consistent layout: line numbers, a window frame and highlighting for common code tokens are added automatically.
  • PNG export: a fixed 2× pixel density for showing code in blogs and docs.
  • Built to share: devs post code daily on X / blogs / docs; a nice code image reads and travels better.

Frequently asked questions

Is my code uploaded?

No. All rendering happens locally with canvas; your code never leaves your device — which matters for code, since snippets often contain API keys, tokens, internal implementation or unreleased logic.

Which languages are supported?

You can paste code text in any language. One lightweight local tokenizer highlights common keywords, strings, numbers, comments and function names. There is no language selector, and the code is not executed.

How does it compare to carbon.now.sh / ray.so?

Same idea — render code into a syntax-highlighted image with a window frame, background and shadow. Carbon has the most themes; ray.so has polished interactions. MockCat is lighter, bilingual, fully local with no upload, with a background that matches the screenshot mockup tool, plus 2× HD and clipboard copy.

Updated · MockCat team

来源、复核与限制

最后核验

2026-06-17

作者

MockupCat editorial desk

复核

Visual asset export review

主要来源

  • 浏览器 Canvas API
  • 站内自绘样机框、灯光和阴影预设
  • 常见社媒与应用商店导出尺寸参考

样机图只是展示素材。发布前请再次确认平台上传规则、品牌素材使用权限和最终导出像素尺寸。