JPG Compressor
Compress JPG files online. Reduce JPG file size while keeping quality — choose a target size or quality level. Free, fast, no watermark.
Max file size 10MB. Sign up for more.
| File Name | Size | Compress To |
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Checking files and selected compression settings.
| File Name | Compressed Size | Download |
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Create a free account to track usage, then upgrade for more monthly compressions and larger batch limits.
How to Compress JPG Files Online
JPEG uses lossy compression, so every reduction involves a quality trade-off. Our tool finds the optimal balance automatically.
Drag and drop JPG or JPEG files into the upload area. Works with camera photos, screenshots, and edited images. Batch upload is supported.
Pick a target file size from the dropdown. The engine adjusts JPEG quality factor (1-100) to hit your target while minimizing visible artifacts like banding or blockiness.
Download individually or as a ZIP. EXIF metadata (camera model, GPS, date) is stripped during compression to further reduce size and protect your privacy.
Why Choose Our JPG Compressor
JPEG's DCT-based lossy compression discards high-frequency detail the human eye barely notices, achieving 60-70% smaller files at quality 80-85.
Chroma subsampling stores color at half the resolution of brightness, cutting file size by a third with almost no visible difference in photographs.
JPG is the most widely used image format on the web. Every browser, device, email client, and social media platform supports it natively.
Progressive JPEGs render a blurry preview first, then sharpen as data arrives. They are slightly smaller than baseline JPEGs and feel faster on slow connections.
JPG excels at photographs, product images, social media posts, blog hero images, and any image with millions of colors and smooth tonal transitions.
EXIF data like camera model, GPS coordinates, and timestamps are removed during compression, reducing file size and protecting your privacy.
Compress to a size, not to a guess
Most image compressors give you a quality slider and leave you to work out what size it lands on. This one takes the target size directly. In our own testing a 3.4 MB photo came back at 47 KB, 145 KB and 968 KB for 50KB, 150KB and 1MB targets, landing close to each one in under half a second. Every image is capped at 1920px on the long edge, which is ample for screen use and keeps the file honest.
Upload limits worth knowing
The caps people most often run into, and what each one really means in practice.
| Where | Limit | In practice |
|---|---|---|
| Gmail | 25 MB | Attachments above this are converted to a Drive link instead of sending. |
| Outlook.com | 20 MB | Outlook desktop against Exchange is often capped lower, at 10 MB. |
| WordPress (default) | 2 MB | Set by PHP's upload_max_filesize; many hosts leave the default in place. |
| Largest Contentful Paint | under 2.5s | Google treats 2.5s as the good threshold; the hero image is usually what decides it. |
Email attachments are Base64-encoded in transit, which inflates them by roughly 33%. A 20 MB file arrives as about 27 MB, so a 25 MB cap is really closer to 18 MB of actual payload. Leave headroom rather than compressing to exactly the published limit.
How JPG compression works at this target
JPG uses lossy DCT compression tuned by a single quality parameter (0-100). A stock 3 MB smartphone JPG typically starts at quality 92. Reaching a small size target means dropping quality, and the relationship is non-linear: the first 40% size cut is nearly invisible (quality 92 → 80); the last 40% is where visible artefacts appear — mostly ringing near sharp edges (text, faces at close crop), colour banding in blue skies, and blockiness in flat backgrounds. Our compressor iterates quality downward until the size cap is met, so photos with lots of flat area hit the target at higher quality than detail-heavy ones.
Which target size to pick for JPG
Different portals cap JPG uploads at different sizes. Pick the target that matches where you’re uploading rather than shrinking blindly — over-compressing wastes visible quality, under-compressing gets rejected.
JPG Compressor FAQ
Quick answers about compression targets, upload limits, format behavior, and the best cases for compressing JPG files.
How do I compress JPG files online?
What sizes can I compress JPG to?
How does JPG compression work?
Will compressing reduce JPG quality?
Is the JPG compressor free?
Are my JPG files kept private?
Does compressing JPG remove EXIF metadata?
What is the smallest size a JPG can be compressed to?
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