Resize any image online
Many websites, forms and social networks need images of a specific size. This image resizer lets you set an exact width and height in pixels, or scale by percentage, and keeps the proportions locked so faces and products never look stretched. It works with JPG, PNG, WebP and GIF files.
How to resize an image
- Drop an image onto the box or click to select one.
- Choose By pixels and enter a width or height, or choose By percentage and use the slider.
- Keep Lock aspect ratio ticked to resize in proportion.
- Choose the output format and quality, then click Resize & download.
Popular image sizes
- Website hero / banner: 1920 × 1080 px
- Blog featured image: 1200 × 675 px
- Open Graph / Facebook link image: 1200 × 630 px
- Instagram post: 1080 × 1080 px (square) or 1080 × 1350 px (portrait)
- Instagram / TikTok story: 1080 × 1920 px
- YouTube thumbnail: 1280 × 720 px
Resizing and quality
Making an image smaller keeps it sharp. Making it much larger than the original adds no new detail, so it can look soft or blurry. For the web, resize images to the largest size they are actually shown at, then shrink the file further with the image compressor. To change file type without resizing, use the image converter.
Resize by pixels or percentage
- By pixels: enter an exact width or height. With the aspect ratio locked, the other side updates automatically.
- By percentage: scale the whole image, for example 50% to halve both sides.
- Crop to fill: when you need an exact shape such as a square, the image is scaled to cover the box and trimmed evenly from the centre, so nothing looks stretched.
Popular preset sizes
- Instagram post: 1080 × 1080 px (square) or 1080 × 1350 px (portrait)
- YouTube thumbnail: 1280 × 720 px
- Passport photo: 413 × 531 px (35 × 45 mm) or 600 × 600 px (US 2 × 2 inch)
- Facebook cover: 1640 × 624 px (displays at 820 × 312)
- LinkedIn banner: 1584 × 396 px
- X (Twitter) header: 1500 × 500 px
- Open Graph / link preview: 1200 × 630 px
Pixels, DPI and print sizes
Screens only care about pixels. For printing, multiply the size in inches by the printer resolution, usually 300 DPI. A 4 × 6 inch photo print needs 1200 × 1800 px. A 35 × 45 mm passport photo at 300 DPI needs 413 × 531 px (1 inch = 25.4 mm).
Resize before you compress
A 4000 px camera photo displayed in an 800 px slot wastes about 95% of its pixels. Resize first to the largest size the image will be shown at, then use the image compressor to shrink the file. This two-step approach gives the sharpest image at the smallest size.
Supported formats
You can open JPG, PNG, WebP, GIF, BMP and SVG, and save as JPG, PNG or WebP. Transparency is kept when saving as PNG or WebP. Animated GIFs are saved as a still image of the first frame.
Frequently asked questions
Will resizing reduce image quality?
Reducing size keeps images sharp. Enlarging far beyond the original resolution can make them look blurry.
What does "lock aspect ratio" mean?
When it is on, changing the width automatically updates the height (and the other way round) so the image keeps its proportions.
Is my image uploaded?
No. The image is resized in your browser and never leaves your device.
Which format should I download?
JPG for photos, PNG for graphics that need transparency, and WebP for the smallest files on websites.