Sample JPEG images

JPEG is a popular graphics format for presenting images; it is the most common image format. JPEG allows you to compress data with or without data loss. Below are the test images in this format available for download.

Sample file: Sky on a cloudy summer day
Sky on a cloudy summer day
20 Kb
400x300
↓
Sample file: Walking path along the river in a park in the center of the city
Walking path along the river in a park in the center of the city
20 Kb
400x300
↓
Sample file: A walking path in a park
A walking path in a park
20 Kb
400x300
↓
Sample file: Large test picture with red fill
Large test picture with red fill
1 Kb
400x300
↓
Sample file: Large test picture with green fill
Large test picture with green fill
1 Kb
400x300
↓
Sample file: Large test picture with blue fill
Large test picture with blue fill
1 Kb
400x300
↓
Sample file: Small test picture with red fill
Small test picture with red fill
1 Kb
200x200
↓
Sample file: Small test picture with green fill
Small test picture with green fill
1 Kb
200x200
↓
Sample file: Small test picture with blue fill
Small test picture with blue fill
1 Kb
200x200
↓
Sample file: Small red picture
Small red picture
1 Kb
100x75
↓
Sample file: Small green picture
Small green picture
1 Kb
100x75
↓
Sample file: Small blue picture
Small blue picture
1 Kb
100x75
↓
Sample file: Single-pixel red image
Single-pixel red image
1 Kb
1x1
↓

🧠 How JPEG Works

JPEG compresses images with loss — it discards details invisible to the human eye. The quality parameter controls how much detail is discarded. Here is how it works:

🖼 RGB original image 🎨 YCbCr luminance separate from color 🧩 Blocks 8×8 image is split into pieces 📉 DCT pixels to frequencies (like notes in music) ✂️ Quantization discard fine details ⬆ quality 📦 Huffman lossless compression (like ZIP) 💾 .jpg final file