Compress JPG images to reduce file size by 50-70% while keeping visual quality. Free online compression.
Drag & drop files here
or Browse Files
Max file size: 10MB · Max 2 files at once
Large JPG files slow down websites, bloat email attachments, and waste storage. ConvertFile compresses your JPG images on our secure server, reducing file size by 50-70% at 85% quality with no visible difference to the human eye.
Select or drag and drop your JPG files
Adjust the quality slider to your desired balance
Click Compress and download your optimized JPG
Most JPG images are saved at higher quality than necessary. A photo saved at 100% quality is roughly 2-3x larger than the same image at 85% quality, with no visible difference to the human eye. That extra data is wasted bandwidth and storage.
Compressing JPG files is essential for web performance. Google's PageSpeed Insights penalizes oversized images, and every extra kilobyte increases page load time. A well-compressed JPG at 80-85% quality delivers the same visual experience at a fraction of the file size.
| Aspect | Uncompressed | Compressed JPG |
|---|---|---|
| Quality Setting | 95-100% | 75-85% |
| File Size (typical photo) | 1-3 MB | 200-500 KB |
| Visual Difference | Baseline | Not visible to human eye |
| Web Performance | Slow load times | Fast, optimized loading |
| Best For | Archival, print production | Web, email, social media |
| Storage Impact | High storage usage | 50-70% less storage |
JPG uses lossy compression based on the DCT (Discrete Cosine Transform) algorithm. It works by dividing the image into 8x8 pixel blocks and discarding high-frequency visual information that the human eye is least sensitive to. The quality setting controls how much information is discarded. At 85%, the compression removes data that is imperceptible to most viewers. Below 70%, artifacts become noticeable around sharp edges and text.
JPG quality is measured on a scale from 1 to 100. At 100%, almost no data is discarded, resulting in large files. At 85%, file sizes drop by 50-70% with no visible quality loss for photographs. At 60-70%, files are very small but compression artifacts become visible. For most use cases, 80-85% is the sweet spot where file size and quality are both acceptable.
Your JPG files are processed on our secure server and temporarily stored for you to download. All uploaded files are automatically deleted within 1 hour. We do not access, analyze, or share your files with any third party.
At 85% quality, expect 50-70% file size reduction with no visible quality loss. At 70%, reductions can reach 70-80%, but some artifacts may appear around sharp edges.
Not at reasonable quality settings. At 80-85%, the compressed image is visually identical to the original for photographs. Only pixel-level comparison would reveal differences.
For web images: 75-85%. For email attachments: 80-85%. For social media: 75-80%. For print: stay above 90%. For archival: keep the original uncompressed.
Yes. Upload multiple JPG files and they will all be compressed with the same quality setting. Download them individually or as a batch.
No. JPG compression is lossy, meaning discarded data cannot be recovered. Always keep your original files if you might need the full quality later.
Files are temporarily stored for download and automatically deleted within 1 hour. We do not keep copies beyond this period.
No. Compression only reduces file size by adjusting the encoding quality. The image width, height, and aspect ratio remain unchanged.
Most cameras and phones save JPGs at 95-100% quality by default. Screenshots and image editors also tend to export at maximum quality. Compressing to 80-85% removes unnecessary data without visible quality loss.