Compress JPG Images Online

What Is This Tool?

A JPG compressor re-encodes JPEG images at a stronger compression setting. Cameras and phones save JPGs at very conservative (high) quality — great as an original, wasteful for sharing: a 5 MB photo typically compresses to well under 1 MB with no difference visible on screen.

JPG compression works by discarding visual detail the eye barely registers, so it's a quality dial, not magic: this tool exposes that dial directly and shows the resulting size per image, plus an optional maximum width, since oversized dimensions are usually the other half of the problem.

Why Use It?

• Purpose-built for JPGs — the format your photos are already in.
• Quality slider with per-image before/after sizes: see exactly what each setting costs.
• Optional max-width resize handles the "4000px photo" problem in the same pass.
• Batch compression, individual downloads.
• Local and private — no upload, no size limit, no watermark.

How to Use

1. Drop JPG files onto the box (or click to choose).
2. Set quality — 75% is the sweet spot for sharing; 60% for maximum savings.
3. Optionally cap the width (1920px covers full-screen use).
4. Download each compressed file; savings are shown per image.

Example

Input

IMG_2054.jpg — 5.1 MB, straight from a phone

Output

IMG_2054-compressed.jpg — 0.62 MB (−88%)

75% quality + 1920px max width: indistinguishable on screen, 8× lighter.

Common use cases

• Shrinking phone photos before attaching them to an email that has a size limit, without leaving your inbox app to find a separate tool.
• Preparing product photos for a website where page-load speed depends directly on image size.
• Fitting a batch of event photos under a messaging app's per-file size cap before sending.
• Reducing storage use for a large personal photo archive without a visible quality trade-off.

Understanding generation loss

Every time a JPG is re-encoded — not just resized, any re-save counts — it discards a little more visual information, because JPG compression is lossy by design and doesn't know it already threw something away the last time. This is why the standard advice is to compress once from a high-quality original rather than repeatedly editing and re-saving the same JPG: five rounds of "just a small edit, re-save as JPG" degrades a photo noticeably more than one careful compression pass at the quality level you actually need, even if each individual re-save looks fine on its own.

Why phone photos compress so dramatically

Phone cameras deliberately save at very high, conservative quality settings — often 90%+ — because manufacturers assume you might crop, edit or print the photo later and don't want to bake in visible compression loss before you've had a chance to use the full detail. For casual sharing, chat, or web use, that conservative quality is mostly wasted: the human eye can't distinguish 90% from 75% quality on a phone or laptop screen, but the file size difference between them is often 3–5×. This is exactly the gap this tool is built to close — you get the file-size benefit of aggressive compression while keeping visual quality that's indistinguishable from the untouched original at normal viewing sizes.

Frequently Asked Questions