Compress JPEG Images

JPEG is the most widely used format for photographs and detailed images, but unoptimized JPEGs can be far larger than they need to be. This tool re-encodes your JPEG files at a quality level you choose, stripping away data the human eye barely notices and producing dramatically smaller files for faster-loading websites, quicker email attachments, and lighter storage.

100% private: every image is compressed directly in your browser using the HTML canvas. Nothing is ever uploaded to a server, so even sensitive photos stay on your device.

Common Use Cases

Faster Websites

Shrink product photos and hero images to improve page-load speed and Core Web Vitals scores.

Email & Sharing

Bring large camera photos under attachment limits without resizing or cropping them.

Bulk Optimization

Compress up to 20 photos at once and download them all in a single ZIP archive.

How to Compress a JPEG

1

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. You can load up to 20 images in a single batch.

2

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.

3

Preview & Compare

Open the side-by-side preview to compare the original and compressed versions and check the percentage saved before committing.

4

Download

Save each compressed image individually, or use Download All (ZIP) to grab the entire batch in one click.

Tip: JPEG is a lossy format, so compressing an already-compressed JPEG again can introduce extra artifacts. For best results, start from the highest-quality original you have.

Features

Adjustable Quality

A precise 1–100 slider gives you full control over the trade-off between file size and image fidelity.

Batch Compression

Process up to 20 images in one go and export them together as a ZIP archive.

Before / After Preview

A real-time comparison view with a clear percentage-saved readout for every file.

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

What quality setting should I use?

Quality 80 is recommended for most use cases — it offers a strong balance between file size and visual quality. Drop to 60–70 for thumbnails where size matters most, or raise it to 90+ when fine detail must be preserved.

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 and download them all together as a ZIP file. For larger collections, simply clear the list and run another batch.

Does compression reduce 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.