Reduce JPEG File Size in Seconds
JPEG is the go-to format for photographs and detailed images, yet straight-from-the-camera files are often far larger than they need to be. This tool re-encodes each JPEG at a quality level you choose, discarding data the human eye barely registers and producing dramatically smaller files for faster-loading pages, quicker email attachments, and lighter storage.
Common Use Cases
Faster Websites
Email & Sharing
Bulk Optimization
How to Compress a JPEG
Add Your Images
Drag and drop JPEG files onto the upload zone, click to browse your device, or paste an image straight from the clipboard with Ctrl+V. You can load up to 20 images in a single batch.
Set the Quality
Drag the quality slider from 1 to 100, or type an exact value. Lower numbers mean smaller files; higher numbers keep more detail. The default of 80 suits most photos, and the result updates live as you adjust.
Preview & Compare
Click a thumbnail to open the side-by-side preview, compare the original against the compressed version, and check the percentage saved before you commit.
Download
Save each compressed image individually, or grab three or more together in one click. Batches of three or more are bundled into a single ZIP archive.
Features
Adjustable Quality
A precise 1–100 slider gives you full control over the trade-off between file size and image fidelity, with live recompression as you drag.
Batch Compression
Process up to 20 images in one go and export three or more together as a single ZIP archive.
Before / After Preview
A side-by-side comparison view with a clear percentage-saved readout and running totals for the whole batch.
Fully Browser-Based
No uploads, no sign-up, no waiting. Everything runs locally for total privacy and instant results.
Quality Setting Guide
| Quality | Result | Best For |
|---|---|---|
| 90–100 | Minimal compression, highest quality | Print, portfolios, archival |
| 70–89 | Great balance of size and quality | Most websites and galleries |
| 50–69 | Noticeable artifacts, much smaller files | Thumbnails, previews |
| 1–49 | Heavy compression, visible quality loss | Maximum size reduction |
Frequently Asked Questions
How do I compress a JPEG without losing quality?
JPEG is a lossy format, so some data is always discarded — but at quality 80 the loss is usually invisible to the eye while the file shrinks substantially. Keep the slider at 80–90, use the before/after preview to confirm the result looks clean, and only go lower if you need an even smaller file.
What quality setting should I use?
Quality 80 is the recommended default — it strikes a strong balance between file size and appearance. Drop to 60–70 for thumbnails where size matters most, or raise it to 90+ when fine detail must be preserved.
Can I compress a JPEG to an exact KB size?
There is no fixed target-size box, but the quality slider gives you the same control. Lower the quality, watch the compressed size and percentage-saved update live in the summary, and stop once the file is under the limit you need. It usually takes only a couple of adjustments to land close to a target like 200 KB.
Are my images uploaded to a server?
No. All compression happens entirely in your browser using the HTML canvas. Your images never leave your device, which makes the tool safe even for private or sensitive photos.
How many images can I compress at once?
You can compress up to 20 images in a single batch. Download them individually, or grab three or more together as one ZIP file. For larger collections, clear the list and run another batch.
Does compression change the image dimensions?
No. The pixel width and height stay exactly the same. The tool only re-encodes the image at a lower quality level to reduce the file size in kilobytes — it does not resize or crop.
Why does JPEG work better than PNG for photos?
JPEG uses lossy compression tuned for the smooth color gradients and fine detail found in photographs, producing far smaller files than PNG for the same picture. PNG is better reserved for graphics with flat colors, sharp edges, or transparency.
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