Resize images
Set a maximum width and height in pixels. Graviton scales each image down to fit, keeps its proportions and never enlarges it.
Drop your images here
JPG, PNG, WebP, AVIF, HEIC and GIF, up to 100 MB each
How it works
Resize in three steps
- 1
Drop your images in.
- 2
Set a maximum width and height, or pick a preset like 1920 or 1080.
- 3
Download the resized images, one by one or as a ZIP.
Proportions are always kept
The width and height are maximums. A 4000 × 3000 photo resized to 1920 × 1920 becomes 1920 × 1440, so nothing is stretched or cropped.
Popular sizes
1920 pixels fits full-screen on most laptops and is a good default for websites. 1080 suits social media posts. 3840 keeps photos sharp on 4K screens.
Frequently asked questions
Will small images be enlarged?
No. Images already smaller than the size you set are left at their size, because enlarging only adds blur.
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.