Compress JPG
Free online JPG compressor that runs entirely in your browser — files are never uploaded. Adjust quality and compare sizes before and after.
About this tool
This JPG compressor significantly reduces file size while keeping good visual quality — ideal for websites, email attachments and social sharing. Everything is processed locally in your browser, so your images never leave your device.
How to use
- Click or drag to select an image (JPG is the common use case)
- Adjust the quality slider (lower means smaller file)
- Compare the file size before and after
- Click download to save the compressed image
FAQ
Does compression reduce image quality?
JPG is a lossy format, so some quality is traded for size. Between 70% and 85% quality the difference is barely visible, while file size often drops by more than half.
Are my images uploaded to a server?
No. All compression runs locally in your browser. Your files never leave your device.
How large an image can I compress?
It depends on your device memory, but images of tens of megabytes usually process smoothly.
Can I use an iPhone HEIC or HEIF photo?
Yes. This JPG-focused tool also accepts HEIC, HEIF, PNG and WebP input. In supported modern browsers they are decoded locally, then you choose JPG, PNG or WebP output.
Related tools
PNG to JPG
Convert PNG files to JPG online for free. Everything runs locally in your browser — your files are never uploaded.
JPG to PNG
Convert JPG files to PNG online for free. Everything runs locally in your browser — your files are never uploaded.
HEIC / HEIF to JPG
Convert HEIC / HEIF files to JPG online for free. Everything runs locally in your browser — your files are never uploaded.