Resize images

This image resizer changes the pixel dimensions of your photos without stretching or cropping them. Choose the longest side, a width, a height, a percentage or a box to fit inside, and download the resized copies. It runs entirely in your browser: the images are processed on your device and are not uploaded anywhere.

How to use it

1. Choose one or more images above, or drop them in on a computer.
2. Pick a resize mode and type the size, or tap one of the size presets.
3. Download each copy, or all of them at once as a ZIP.

Every image in the list gets the same settings. Change a value and the list is redone, with the new dimensions shown for each file before you download it.

The five ways to set the size

The other side is always calculated from the original aspect ratio. That means a 4000 × 3000 photo set to a 1920 px longest side becomes 1920 × 1440, and a portrait 3000 × 4000 becomes 1440 × 1920. One setting, both orientations handled.

Fit in a box makes the image as large as possible while staying inside the box on both sides. If the proportions differ from the box, one side comes out shorter. Nothing is cut off and nothing is distorted.

Size presets

The presets fill in the box for you. They are the sizes most platforms and apps ask for, written as plain numbers:

• 1080 × 1080: square post
• 1080 × 1350: portrait post, 4:5
• 1080 × 1920: story or vertical video cover, 9:16
• 1920 × 1080: Full HD, wallpapers and presentations
• 1280 × 720: HD, video thumbnails
• 1200 × 630: link preview image

Because proportions are kept, a landscape photo set to 1080 × 1350 will be 1080 wide and less than 1350 tall. To fill the frame exactly, crop to the right ratio first with the image cropper, which has 1:1, 4:5, 16:9, 9:16 and 3:2 built in, then come back here.

Enlarging, quality and format

Allow enlarging is off by default: if an image is already smaller than the size you ask for, it is left at its original dimensions. Turn it on when you really need a bigger file, but expect a softer picture: resizing up spreads the same detail over more pixels.

Going down, the tool uses high-quality downscaling, reducing large photos in steps so fine detail like text or hair doesn't turn jagged.

The output keeps the same format as the original by default. You can switch to JPEG, PNG or WebP. For JPEG and WebP a quality setting appears, set to 90, which is visually close to the original. Transparent areas sent to JPEG are filled with white, since JPEG has no transparency.

Smaller dimensions usually mean a much smaller file, but not a specific one. If a form asks for "under 200 KB", resize first, then use the image compressor and set the target size.

Metadata is removed

Each resized copy is drawn from the pixels and saved again, so the EXIF block is not carried over: no GPS location, no capture date, no camera or lens model. Your original file is not changed. If you only want to strip metadata and keep the full resolution, use the EXIF remover.

When the photo is a document

People often resize photos because a portal asks for a lighter scan: an ID card for a rental, a payslip, a medical certificate. The copy you upload goes where it has to go. The original stays in your Camera Roll, gets synced, and shows up next to holiday pictures.

sigil. is a place for those originals. Photos and documents are encrypted on your phone with a 256-bit key that only your sign unlocks, there is no account, and location and camera metadata are stripped when files go in and come out. It also works offline, like this tool. See how to keep ID documents safe on your phone and how the private camera keeps new shots out of the Camera Roll.