Resize an image to 4K UHD
Resize JPG, PNG, WEBP or HEIC to exact pixels, a percentage, or a preset for Instagram, LinkedIn and more. Free, in your browser, nothing uploaded.
Drop files here or click to choose
Your files stay on this device. Nothing is uploaded.
4K wallpapers and presentation backgrounds are 3840×2160. Upscaling a small photo will look soft; this preset is best for large originals that need exact 16:9 framing. Nothing is uploaded.
How it works
- Drop one or many images.
- Type a width, a height, a percentage, or pick a preset.
- Resize and download.
This tool runs entirely in your browser. Your files are never uploaded, so there is no size limit and it works offline once loaded.
Common situations
- Resize images
- Resize an image for Instagram
- Resize an image for a LinkedIn banner
- Resize an image to 1080×1350 for Instagram
- Resize an image for an Instagram Story
- Resize an image for a LinkedIn post
- Resize an image for a Facebook cover
- Resize an image for an X header
- Resize an image for a YouTube thumbnail
- Resize an image for a link preview (Open Graph)
- Resize an image to 1920×1080
- Resize an image for a profile picture
- Resize an image for a Pinterest pin
- Resize a photo to 2×2 inches (600×600 px)
- Resize an image for a WhatsApp profile picture
- Resize an image for a YouTube channel banner
- Resize an image to A4 size at 300 dpi
Frequently asked questions
Is it really free and private?
Yes. Everything runs in your browser with open-source code; nothing is uploaded. No account, no watermark, no file-size limit other than your device's memory.
Will resizing make my image blurry?
Making an image smaller keeps it sharp. Making it larger cannot invent detail: expect softness above about 150% of the original size.
Which format is the output?
The same as the input by default (JPG stays JPG). You can switch to JPG, PNG or WEBP in the options.