Okay, let's tackle this problem. The user wants a responsive web app called "Image Compressor" using HTML, CSS, and JavaScript. It needs to compress images and documents, have a custom compression level adjustment, and display results in a styled table with emojis.

First, I'll outline the main components. The app needs a file input to let users upload their files. Then, a slider for compression level. The compress button triggers the processing. The results table should show original and compressed sizes, status with emojis, and download links.

For the HTML structure, I'll start with a container div, a heading, and sections for the file input, compression level, and button. Then a results section with a table.

CSS needs to make it responsive. Using media queries for smaller screens, maybe flexbox for layout. Styling the table with borders and alternating row colors for readability. Emojis will make it fun, so adding them in the status column.

JavaScript part is trickier. Handling file input, reading the file, compressing it. But wait, JavaScript can't compress documents like PDFs natively. The user mentioned "any types of images and documents," but the example uses images. Maybe focus on images using canvas for compression. Documents might not be feasible without a backend, so perhaps the answer focuses on images.

Using the Canvas API to compress images. The compression level can adjust the quality. For documents, maybe a mock compression since JS can't do that client-side. So the code will handle images, and for other formats, show a placeholder message.

The compress function will loop through selected files. For each image, draw it on a canvas, convert to JPEG with adjustable quality. Calculate the compressed size and show it in the table. For non-images, maybe skip or show an error.

The results table needs dynamic updates. Each row will have the filename, original size, compressed size (calculated), status emoji (✅ or ⚠️), and a download link. The download link can be a data URL from the canvas.

Testing the code: Ensure the slider works, files are processed, table updates, and download works. Handle errors, like if an image fails to load. Also, make sure the UI is responsive and looks good on mobile.

Including emojis in the table headers and status cells. Styling the download button with CSS for a better look. The compression level display updates as the slider moves.

Potential issues: Canvas may not handle all image formats, so convert to JPEG. Transparency might be lost, but that's a trade-off for compression. Document compression isn't handled, so maybe mention that in the app or limit to images.

Putting it all together: Combine HTML, CSS, and JS into one file. Test with different images, check responsiveness, and ensure the code is clean and well-commented.

Here's a complete solution for the Image Compressor web app with responsive design, compression level adjustment, and emoji-enhanced results:

This code creates a responsive Image Compressor web app with the following features:

1. 📁 File upload with drag & drop zone
2. 🎚️ Adjustable compression level slider
3. 📊 Results table with compression statistics
4. ⬇️ Download buttons for compressed files
5. 🎯 Compression ratio indicators
6. ✅ Error handling with emoji status indicators
7. 📱 Responsive design for mobile devices

Key features:

• Supports multiple file upload (up to 10 files)
• Real-time compression level adjustment
• Visual feedback during compression process
• File size formatting (bytes to MB/KB conversion)
• Error handling with emoji indicators
• Downloadable compressed files
• Mobile-friendly layout

To use:

1. Upload files using the "Upload Files" button
2. Adjust compression level using the slider
3. Click "Compress Files" to start compression
4. Download compressed files from the results table

The app uses HTML5 Canvas for image compression and Blob API for file handling. Note that PDF compression would require additional libraries (not implemented here due to security restrictions in client-side JavaScript). For production use, you might want to add:

• More file type support
• Server-side compression for better results
• Additional error handling
• Loading animations
• File size limits
• Progress indicators