Browser-local workspace

Compress JPG files in your browser

Reduce JPEG file size locally while choosing the quality balance that suits your image.

No upload
No sign-up
JPG

PixelShrink workspace

Local only

Drop images into the darkroom

Choose up to 20 JPG images. Files are checked and decoded on this device.

Choose images

Nothing selected yet

Output format Quality 80%

Quality applies to JPG and WebP. PNG output remains lossless.

Per image

25 MB

Images per batch

Batch limit

150 MB

A practical guide

Trim photo weight while keeping the details people notice.

JPG compression is most useful for photographs and other images with many colors and gradual changes in tone. The format is lossy: the encoder simplifies visual information to reduce bytes. PixelShrink lets you choose that tradeoff locally, then compare the measured output with the original before saving anything.

The right quality is contextual. A large blog photograph may still look convincing at a moderate setting, while small text, line art, or a product label can show ringing and blur much sooner. Avoid repeatedly saving an already compressed JPEG; each lossy generation can compound artifacts. Keep an original or highest-quality master for future edits.

How to use it

From file to finished in four moves

Drop JPG or JPEG files into the workspace; other formats are rejected on this focused route.
Start near the default quality and lower it gradually when byte size matters more than fine texture.
Compress locally, then inspect edges, faces, gradients, and text in the preview as well as the measured file size.
Download the chosen JPG files or bundle successful batch results into a ZIP.

Format notes

Know what changes—and what does not.

Lossy is a deliberate tradeoff

Lower quality can reduce file size, but the removed detail cannot be restored by increasing quality later.

JPG has no transparency

This route accepts JPEG sources, which are already opaque. Use PNG or WebP when a transparent background is required.

Every source behaves differently

Noise, foliage, fabric, and sharp text are harder to compress cleanly than smooth backgrounds, so one quality value will not suit every file.

Good fits

Useful choices for real files.

A blog hero photograph

Reduce a camera-exported hero image after resizing it to the display dimensions, then check important texture at the final on-page size.

An email attachment

Try a moderate quality reduction and use the displayed byte count to judge whether the attachment is practical to send.

Privacy by design

Your image does not become our file.

Your JPEG is decoded and encoded in the browser. PixelShrink does not receive the selected image or its generated result, and no account is needed. The host can log the page request, but the file content is not part of that request.

Frequently asked questions

Answers before you start.

What JPG quality should I use?

There is no universal number. Start near 80, inspect the actual image, and lower it only while the visible result remains suitable for its destination.

Why is the compressed JPG larger?

The source may already be efficiently encoded, or the selected quality may be higher than its previous save. Keep the smaller original when the new result offers no benefit.

Does this remove image dimensions?

No. Compression preserves width and height on this route. Resize first when excessive pixel dimensions are the main source of weight.

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