Browser-local workspace

Resize JPG images on your device

Set exact JPEG dimensions, scale by percentage, or use a preset without sending files to a server.

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

Width (px) Height (px) Lock aspect ratio Resize by percentage Maximum-size preset Do not upscale Output format JPG background

Per image

25 MB

Images per batch

Batch limit

150 MB

A practical guide

Set practical JPEG dimensions before lowering quality.

A JPEG exported from a camera or design tool may contain far more pixels than a website, marketplace, document, or form can display. This route resizes JPG files to exact dimensions, a percentage, or a maximum-size preset. Keeping the aspect ratio locked protects natural proportions, and the no-upscale option avoids making a small source larger without adding real detail.

Resizing and compression solve different problems. Fewer pixels usually reduce both download work and decoded memory, while JPEG quality controls how those pixels are encoded. Resize to the dimensions the destination needs first; if the resulting file is still too heavy, use the JPG compressor and judge the final preview rather than repeatedly re-saving the source.

How to use it

From file to finished in four moves

Choose JPG files and confirm the original dimensions shown after local decoding.
Enter the required width and height, use a percentage, or select a maximum-size preset.
Keep aspect ratio locked and no-upscale enabled unless the destination explicitly requires otherwise.
Resize locally, verify the exact output dimensions, and download the JPEG results.

Format notes

Know what changes—and what does not.

Keep the natural ratio when possible

Unlocking width and height can distort faces, circles, products, and typography. Use a crop tool later when you need a different composition.

Larger dimensions do not add detail

Upscaling creates more pixels by interpolation; it cannot recreate focus, texture, or resolution missing from the original.

JPEG remains opaque

JPG has no alpha channel. This focused route is intended for sources and outputs that already use a solid background.

Good fits

Useful choices for real files.

A marketplace listing

Fit product photos within an 800 × 800 maximum while retaining the original orientation and avoiding accidental enlargement.

A presentation image

Reduce a large camera photo to the dimensions it will occupy on the slide instead of embedding unnecessary pixels.

Privacy by design

Your image does not become our file.

Pixel dimensions are read and changed with browser APIs on your device. The JPEG file and resized output are not posted to PixelShrink’s server. The page itself loads normally from the host, but image content remains local.

Frequently asked questions

Answers before you start.

Should I resize or compress first?

Resize to the needed display dimensions first. Then compress the resized result only if its measured byte size still needs improvement.

Why did only one dimension match my entry?

With aspect-ratio lock enabled, one side may adjust to preserve the source shape. Maximum-size presets also fit inside a box rather than stretching to fill it.

Can resizing sharpen a blurry photo?

No. Resizing changes the pixel grid; it does not recover focus or detail that the source does not contain.

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