Graviton

Resize images

Drag the corners of your image, or type a width and height in pixels. Graviton keeps proportions unless you unlock them, and enlarges only when you ask.

Drop images or folders here

JPG, PNG, WebP, AVIF, HEIC and GIF, up to 100 MB each

Same format · full qualityProcessed on your device, never uploaded
Resize images

How it works

Resize in three steps

  1. 1

    Drop your images in.

  2. 2

    Pick a size like Full HD or 50%, type a width and height, or drag the corners of a single image.

  3. 3

    Download the resized images one by one or as a ZIP: 3 a day on Free, unlimited on Pro.

Proportions are kept unless you unlock them

With proportions kept, the width and height are a box each image fits inside: a 4000 × 3000 photo fitted to 1920 × 1920 becomes 1920 × 1440. Pick a preset or unlock proportions for an exact size, and choose how each photo meets it: crop it, add bars, or stretch it.

Popular sizes

Full HD (1920 × 1080) fits most laptop screens and is a good default for websites. 1080 × 1350 suits an Instagram post and 1080 × 1920 a story. 4K (3840 × 2160) keeps photos sharp on large screens.

Frequently asked questions

Can I make an image larger?

Yes, when you ask. Type a larger size or drag the image’s corners outward, or turn on Enlarge smaller images for a batch. Enlarging goes up to 4× and 8K (33 MP); it adds pixels but no detail, so a batch leaves smaller images as they are by default.

Does resizing compress my images too?

Not here: Compress is off, so each image is only resized. A JPG keeps about the quality it had, other formats are saved at quality 95, and PNGs without loss. Turn on Compress in the settings to make the files smaller as well, to a quality or an exact file size.

Can I crop as well?

Yes. Crop keeps part of the picture and Resize scales what’s left, so you can use both. Tap Crop above the image to choose the part to keep; the width and height follow the cropped picture.

Are my images uploaded?

No. Graviton converts and compresses inside your browser, so your images never leave your device. Nothing is sent while you compress. When you download, the browser sends only a one-way fingerprint of the image, so the download can be counted and approved. Graviton stores none of it.

Can I resize and convert at the same time?

Yes. Pick an output format such as JPG or WebP in the settings and both happen in one step.

Is it free?

Yes. Compressing and converting are free and unlimited, with no account needed. Downloading needs a free account, which includes 3 downloads a day with every format and setting. Pro removes the daily limit.