Compress JPEG Images Online — Free, No Upload
The most widely used lossy image format, ideal for photographs and complex images with millions of colors. ImageSmith's free JPEG compressor reduces file sizes by 60–90% using advanced lossy compression, entirely in your browser. JPEG uses DCT-based lossy compression. Quality settings of 60–80 are typically imperceptible to the human eye while achieving significant size reduction.
✓Reduces file size by 60–90% vs uncompressed formats
✓Universally supported across all browsers and devices
✓Ideal quality-to-size ratio for photographs
✓Excellent compatibility with email clients and legacy systems
Compress JPEG to a Specific Size
Other Format Compressors
When to Use JPEG
Use JPEG for photographs, product images, and any image with smooth color gradients.
JPEG Compression FAQ
Upload your JPEG image to ImageSmith, set your target file size or quality percentage, and click Compress. Your compressed JPEG downloads instantly — no account and no watermark required.
JPEG is a lossy format. ImageSmith's quality slider lets you precisely control the quality-to-size trade-off. Quality settings of 75–85 are imperceptible to most viewers while reducing file size by 60–80%.
JPEG uses DCT-based lossy compression. Quality settings of 60–80 are typically imperceptible to the human eye while achieving significant size reduction. ImageSmith uses a binary search algorithm to automatically find the highest quality setting that achieves your target file size.
Completely safe. ImageSmith runs entirely in your browser using the Canvas API. Your JPEG images never leave your device — zero server uploads.
There is no file size limit. ImageSmith processes JPEG images of any size locally in your browser. Larger images may take slightly longer, but there is no upload size cap imposed by our servers.