JPG Compression Tool
Compress your JPG/JPEG images to different quality levels and compare file sizes. Upload once and get multiple compression options with instant preview and download capabilities. Perfect for optimizing images for web, email, or storage.
Upload Image
Drop a JPG/JPEG image here or click to browse
Supports JPG and JPEG files up to 10MB
How to Use
- Upload your image: Drag and drop a JPG/JPEG file or click to browse.
- View compressions: Instantly see 6 different compression levels with previews and file sizes.
- Compare quality: Review each version to find the best balance between quality and file size.
- Download: Click the download button on your preferred compression level.
Compression Levels Explained
High Quality (95%)
Minimal compression with excellent quality. Best for professional photography or when quality is paramount. Larger file size.
Very Good (85%)
Slight compression with great quality. Excellent for web use and general sharing. Good balance for most uses.
Good (75%)
Balanced quality and size. Recommended for web images, social media, and email. Quality remains high with noticeable size reduction.
Medium (65%)
Moderate compression with acceptable quality. Good for thumbnails, mobile web, or when bandwidth is limited.
Lower (50%)
Higher compression with visible quality loss. Suitable for small previews or when file size is critical.
Low (35%)
Maximum compression with significant quality loss. Only for situations where extremely small file size is essential.
Use Cases
🌐 Web Optimization
Reduce image file sizes for faster website loading times without sacrificing visual quality.
📧 Email Attachments
Compress images to fit within email size limits while maintaining readability.
📱 Mobile Apps
Optimize images for mobile devices to reduce data usage and improve load times.
☁️ Cloud Storage
Save storage space by compressing images before uploading to cloud services.
🎨 Portfolio Sites
Balance image quality and page speed for photography or design portfolios.
📱 Social Media
Prepare images for social platforms with optimal file size for quick uploads.
Tips for Best Results
- Start with high quality: Upload the highest quality original for best compression results.
- Compare side-by-side: Look at each compression level to find where quality loss becomes noticeable.
- Consider your use case: Web images can handle more compression than print materials.
- Test on target devices: View compressed images on the devices where they'll be displayed.
- 70-85% is sweet spot: This range typically offers the best balance of quality and file size.
- Check zoom levels: Compression artifacts become more visible when images are enlarged.
- Batch processing: For multiple images, note which compression level works best, then apply consistently.
Understanding JPEG Compression
JPEG (Joint Photographic Experts Group) compression is a lossy compression method that reduces file size by discarding some image data. The quality parameter controls how much data is kept versus discarded.
How It Works
JPEG compression divides the image into blocks and applies mathematical transformations to reduce data. Higher compression (lower quality) discards more detail, especially in areas with subtle color variations.
What Gets Lost
JPEG compression primarily affects fine details, sharp edges, and areas with subtle gradients. Compression artifacts become visible as blocky patterns or "mosquito noise" around edges at very low quality settings.
When to Avoid Heavy Compression
Avoid high compression for images with text, line art, or graphics with sharp edges. Also use caution with images that will be edited further, as repeated compression compounds quality loss.
Frequently Asked Questions
Are my images uploaded to a server?
No! All compression happens in your browser. Your images never leave your computer.
Can I compress the same image multiple times?
You can, but it's not recommended. Each compression loses more quality. Always start with the highest quality original.
Which compression level should I use?
For web use, 75-85% quality is usually ideal. For thumbnails, 50-65% works well. For print or professional use, stay above 85%.
Will compression affect image dimensions?
No, compression only affects file size and quality, not the pixel dimensions of the image.
Can I compress PNG files?
This tool is specifically for JPEG files. PNG uses different compression and would need a different tool.
Why are some compressed versions larger?
If your original is already heavily compressed, recompressing at high quality may increase file size as it tries to preserve more data.
