Resize images to any size, privately

About this tool

Resize Image changes the pixel dimensions of a picture: how many pixels wide and tall it is. Use it to fit a photo into a profile slot, meet a “must be 600 × 600” rule on a form, prepare a banner for a website, or turn a 6000-pixel camera shot into something sensible for a slideshow.

You can resize by percentage, by width, by height, or to an exact size. When you pick an exact size whose shape differs from your photo, the tool can trim the edges evenly so nothing looks squashed. There are quick buttons for common sizes such as an Instagram post and a link preview card.

Everything is done by your own browser. Your photos are not sent to a server, there is no account to create, and there is no watermark or daily cap. It also handles a whole folder of holiday snaps in one go, up to 50 images, and gives them back as a single ZIP file.

How to use Resize Image

1. Press “Choose files”, drag pictures onto the box, or paste with ⌘V / Ctrl+V on a computer. Each one appears with a thumbnail, its pixel size and its file size.
2. Under “Resize by”, pick Percentage, Width, Height or Exact size, then type the number you need. A note shows the first image’s size before and after as you type.
3. For Exact size, choose what happens if the shape differs: “Crop to fill” or “Stretch to fit”. You can also tap a quick size button.
4. Optional: change “Save as” to JPG, PNG or WebP. The default keeps each file’s own format.
5. Press “Resize image” (or “Resize 12 images” for a batch). A big preview opens: before and after, the result alone, or actual pixels. Tap any row to preview it, then download each picture or save them all as one ZIP.

ExampleA 4032 × 3024 phone photo resized to Width 1080 comes out at 1080 × 810, saved as holiday-1080x810.jpg, and is usually a fraction of the original file size.

Features

• Four ways to resize: Percentage (1–800%, starting at 50%), Width, Height, or Exact size.
• Width or Height alone keeps the proportions: the other side is worked out for you.
• Exact size can crop to fill, trimming equally from both sides around the centre, or stretch to fit.
• Quick sizes: Instagram post 1080 × 1080, Portrait 1080 × 1350, Full HD 1920 × 1080 and Link preview 1200 × 630.
• Opens JPG, PNG, HEIC (iPhone photos) in any modern browser, WebP, AVIF, TIFF, GIF (first frame), BMP, SVG and ICO. Camera RAW files are not supported.
• Save in the original format, or as JPG, PNG or WebP. JPG and WebP are saved at 92% quality.
• Smooth shrinking: large reductions are done in halving steps, so edges and fine lines don’t turn jagged.
• File names include the new size, such as photo-1200x630.png.

Tips and good to know

• Making a picture bigger than the original adds pixels but no real detail, so it will look softer. Start from the largest version you have.
• Choose “Crop to fill” for profile pictures and social posts so faces are not stretched. Keep the subject near the middle, as the edges are trimmed.
• JPG has no see-through areas, so transparent parts of a PNG turn white. Pick PNG or WebP to keep them.
• With “Same as original”, HEIC and AVIF photos are saved as JPG, and GIF, BMP, TIFF, SVG and ICO as PNG.
• Safari cannot save WebP, so choose JPG or PNG there, or use Chrome or Firefox.
• Safari can only draw about 16 megapixels. A bigger result is made just small enough to fit, and its row says “capped at this browser’s limit”. Chrome and Firefox go bigger.