Web Form Automation

Automate web form interactions including login, file upload, text input, and form submission using Playwright. Use when user needs to automate website intera...

Security Scan

The skill's code and instructions broadly match a web form automation purpose, but there are notable mismatches (missing dependency declarations and minor API inconsistencies) and the skill will handle sensitive session files and arbitrary target URLs — review before use.

Purpose & Capability

The name/description (Playwright-based web form automation) matches the provided code and instructions. However, the package declares no required binaries or installs despite using Node/Playwright and shell tools (ImageMagick 'convert'). That omission is disproportionate and could mislead users about what must be present.

Instruction Scope

SKILL.md and form-submit.js only instruct actions needed for form automation: navigating to arbitrary URLs, loading session JSON, adding cookies/localStorage, uploading files, typing, clicking, and taking screenshots. These are within scope. Note: the skill requires reading local files (config, session, upload files) which is expected, but those files may contain sensitive credentials/cookies. Also the docs and code use a 'pressSequentially' API (not part of standard Playwright), which is an implementation/instruction mismatch and may cause runtime errors.

Install Mechanism

This is instruction-only (no install spec). The code nevertheless depends on Node and Playwright and the shell script depends on ImageMagick's 'convert'. None of these are declared or installed by the skill. Missing dependency and install guidance is a practical risk (will fail or lead users to install arbitrary packages themselves).

Credentials

The skill requests no environment variables or credentials, which is proportionate. However, it reads session files (cookies/localStorage) and arbitrary local upload files — these can contain sensitive data. Users should ensure session JSONs and upload paths are trusted before use.

Persistence & Privilege

The skill does not request persistent/always-on privileges and does not modify other skills or system-wide settings. It runs ad hoc when invoked.

What to consider before installing

This skill appears to implement legitimate Playwright automation, but review and take precautions before installing: - It does not declare or install dependencies: you must have Node, Playwright (npm package) and ImageMagick's 'convert' available; otherwise the scripts will fail. Consider running in a controlled environment (container or VM). - The tool will read session JSON files (cookies/localStorage) and local upload files — these can contain sensitive credentials or authentication cookies. Only use session files you trust and avoid pointing it at accounts with broad privileges. - The code and docs reference a pressSequentially API that is not standard Playwright; expect runtime errors or the need to replace that with page.type()/keyboard APIs. - Because the script can target arbitrary URLs and perform authenticated actions (via loaded cookies), test with a safe target first and avoid using it with real accounts until you confirm behavior. If you want to proceed: ensure dependencies are installed from official sources, inspect any session.json before use, and run automation in an isolated environment.

Automate web form interactions reliably using Playwright with best practices for session management, file uploads, and form submission.

Quick Start

const { chromium } = require('playwright');

// Basic form automation
const browser = await chromium.launch({ headless: true });
const page = await browser.newPage();
await page.goto('https://example.com/form');

// Upload compressed images
await page.locator('input[type="file"]').setInputFiles('/path/to/image.webp');

// Type text (triggers events properly)
await page.locator('textarea').pressSequentially('Your text', { delay: 30 });

// Submit form
await page.locator('button[type="submit"]').click({ force: true });

Session Management

Using Browser Session Data

When user provides a JSON file with session data:

const sessionData = JSON.parse(fs.readFileSync('session.json', 'utf8'));

// Set cookies before navigating
for (const cookie of sessionData.cookies || []) {
  await context.addCookies([cookie]);
}

// Set localStorage/sessionStorage
await page.evaluate((data) => {
  for (const [k, v] of Object.entries(data.localStorage || {})) {
    localStorage.setItem(k, v);
  }
}, sessionData);

File Upload Best Practices

Image Compression

Always compress images before upload for reliability:

# Convert to webp for best compression
convert input.png output.webp

# Or resize if needed
convert input.png -resize 1024x1024 output.webp

Size comparison:

• Original PNG: ~4MB
• Compressed PNG: ~1MB
• WebP: ~30-50KB (99% smaller)

Upload Sequence

// 1. Find file inputs
const fileInputs = await page.locator('input[type="file"]').all();

// 2. Upload with waiting time
await fileInputs[0].setInputFiles('/path/to/start.webp');
await page.waitForTimeout(3000); // Wait for upload to process

await fileInputs[1].setInputFiles('/path/to/end.webp');
await page.waitForTimeout(3000);

Text Input Best Practices

Use pressSequentially, not fill()

❌ Don't use fill() - doesn't trigger input events:

await textInput.fill('text'); // May not activate submit button

✅ Use pressSequentially() - simulates real typing:

await textInput.pressSequentially('text', { delay: 30 });

Trigger Events Manually (if needed)

await page.evaluate(() => {
  const el = document.querySelector('textarea');
  el.dispatchEvent(new Event('input', { bubbles: true }));
  el.dispatchEvent(new Event('change', { bubbles: true }));
});

Button Clicking

Force Click When Disabled

If button appears disabled but should be clickable:

await button.click({ force: true });

Check Button State

const isEnabled = await button.isEnabled();
const isVisible = await button.isVisible();

Complete Example: Video Generation Form

const { chromium } = require('playwright');
const fs = require('fs');

async function submitVideoForm(sessionFile, startImage, endImage, prompt) {
  const browser = await chromium.launch({ 
    headless: true, 
    args: ['--no-sandbox'] 
  });
  const context = await browser.newContext();
  const page = await context.newPage();
  
  // Load session if provided
  if (fs.existsSync(sessionFile)) {
    const session = JSON.parse(fs.readFileSync(sessionFile, 'utf8'));
    // Set cookies, localStorage...
  }
  
  // Navigate
  await page.goto('https://example.com/video', { 
    waitUntil: 'domcontentloaded' 
  });
  await page.waitForTimeout(3000);
  
  // Upload images (webp compressed)
  const inputs = await page.locator('input[type="file"]').all();
  await inputs[0].setInputFiles(startImage);
  await page.waitForTimeout(3000);
  await inputs[1].setInputFiles(endImage);
  await page.waitForTimeout(3000);
  
  // Select options
  await page.click('text=Seedance 2.0 Fast');
  await page.click('text=15s');
  
  // Type prompt
  const textarea = page.locator('textarea').first();
  await textarea.pressSequentially(prompt, { delay: 30 });
  await page.waitForTimeout(2000);
  
  // Submit
  await page.locator('button[class*="submit"]').click({ force: true });
  
  // Wait and screenshot
  await page.waitForTimeout(5000);
  await page.screenshot({ path: 'result.png' });
  
  await browser.close();
}

Scripts

The scripts/ directory contains reusable automation scripts:

• webp-compress.sh - Convert images to webp format
• form-submit.js - Generic form submission template

Troubleshooting

Button stays gray/disabled

• Wait longer after file upload (3+ seconds)
• Ensure text input triggers events (use pressSequentially)
• Check if images are still uploading

Upload times out

• Compress images to webp format first
• Reduce image dimensions if very large

Form doesn't submit

• Use force: true for click
• Check button selector is correct
• Verify all required fields are filled