Online JPG Compressor
Optimize JPG and JPEG images with surgical precision. Note that JPG and JPEG refer to the exact same image format—the three-letter extension was originally popularized by legacy MS-DOS file limits. SnapReduce lets you specify exact target kilobyte constraints or adjust perceptual quality sliders.
Online JPG Compressor
Drag & drop your image here, or browse files
Supports JPG, JPEG, PNG, WebP & iPhone HEIC • Up to 50MB
How to Use Online JPG Compressor
Select Your JPG File
Upload any .jpg or .jpeg image from your computer or smartphone.
Adjust Target Size
Specify your desired file size in KB or pick standard web presets.
Verify the Dimensions
See original and resulting resolution before finalizing.
Save Output
Click Download to save the compressed JPG to your device.
How the Processing Engine Works
JPG files use lossy Discrete Cosine Transform (DCT) compression. High-frequency image details (such as subtle grain or imperceptible gradients) are compressed first. Our browser-based JPG compressor iterates across encoding matrices to pinpoint the exact quality percentage that fits under your designated file boundary.
Balancing Quality, Dimensions & Target Size
Because JPEG compression is irreversible, repeatedly re-saving a JPG can compound compression artifacts. Our tool always takes your original pristine upload and encodes the final result in a single clean pass.
Frequently Asked Questions
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Related Guides & Tutorials
JPG vs JPEG: What's the Difference?
Confused between JPG and JPEG? Discover the history behind the 3-letter vs 4-letter extension and why they are 100% identical image formats.
Why Are JPEG Files So Large?
Wondering why your JPEG photos take up 5MB to 20MB? Discover the 5 reasons JPEG files become bloated and how to shrink them effortlessly.
What Is JPEG Compression and How Does It Work?
Understand what JPEG compression is, why it is lossy, and how the algorithm shrinks file sizes while keeping photos sharp.