handler.js

PRESET: MIDNIGHT FILM

// Modern JavaScript asynchronous batch processing
import { createDarkroom } from "codeshot";

export async function captureBatch(files, options = {}) {
  const darkroom = await createDarkroom({
    filmStock: "midnight",
    lensProfile: "50mm-f1.4",
    ...options,
  });

  return Promise.all(
    files.map(async (file) => ({
      name: file.name,
      frame: await darkroom.develop(file.buffer),
    }))
  );
}

Ready to customize theme, padding, fonts & export retina PNG? EDIT THIS IN STUDIO →

Free, Private, and Rendered 100% in Your Browser

Unlike online screenshot generators that upload your proprietary source code to cloud servers or lock high-resolution downloads behind monthly paywalls, CodeShot uses an isolated client-side HTML5 Canvas engine. Your code never leaves your local machine, and all downloads (PNG & SVG) are 100% free forever.

Why Developers Choose CodeShot for JavaScript

Instant 60fps Canvas Rendering

No DOM-to-image latency or layout shift. CodeShot renders modern JS code in real time using native HTML5 Canvas.

Template Literals & Destructuring Support

Full visual support for complex modern JavaScript patterns, tagged template literals, arrow functions, and optional chaining.

High-Resolution 2x / 3x Retina Downloads

Ensure your JavaScript code tutorials and dev logs look pixel-perfect on mobile viewports and 4K displays.

Zero Cloud Telemetry

Your JavaScript code remains 100% confidential. No third-party API logs or network tracking.

How to Create Beautiful JavaScript Screenshots

Click Open JavaScript Studio to load our curated JavaScript template.
Paste your source code or write directly into the live canvas viewfinder.
Select your favorite darkroom film stock (Safelight, Midnight, Diya 800, etc.) and window chrome styling.
Customize canvas padding, font size, line numbers, and custom file name title.
Press ⌘S / Ctrl+S or click the Shutter button to instantly download your 2x/3x retina screenshot.

Frequently Asked Questions

How do I download a JavaScript snippet as a PNG or SVG?

Click "Open in Studio", customize your window padding and film stock, then press Shutter (or Ctrl+S / Cmd+S) to save instantly.

Can I link directly to this snippet in my team documentation?

Yes. CodeShot generates compressed URL hash states so your teammates can open the exact code and settings with one click.

Explore Other Code Screenshot Tools

Python Screenshots → TypeScript Screenshots → SQL Screenshots → Rust Screenshots → Go (Golang) Screenshots → Bash & Shell Screenshots → CSS & Styling Screenshots → HTML & Markup Screenshots →

Ready to Frame Your JavaScript Code?

Try CodeShot right now in your browser. No account or installation required.

OPEN JAVASCRIPT STUDIO →