Resize Image
Change the dimensions of any image — set exact pixel dimensions, use percentage scaling, or pick a preset. Aspect ratio is preserved automatically.
Drop an image here
or choose a file
JPEG, PNG, WebP, AVIF, GIF, BMP — up to 150 MB
About image resizing
Resizing images is essential for web development, social media and email. Large images slow down web pages and take up unnecessary storage. Pixuno resizes images using high-quality bicubic interpolation via the browser's Canvas API, giving sharp results at any scale.
Common use cases include resizing photos for social media platforms (1080px for Instagram, 1280px for Twitter/X), creating thumbnails, preparing images for email, and optimising images for web pages.
FAQ
Will resizing change the file format?
The output format matches the original. JPEG inputs produce JPEG output; all other formats produce PNG to preserve quality.
What does "keep aspect ratio" mean?
When enabled, changing the width automatically adjusts the height (and vice versa) to maintain the original proportions and prevent distortion.
Can I make an image larger than the original?
Yes, but upscaling a raster image will reduce sharpness. For the best results, downscale rather than upscale.
What is the maximum output size?
Pixuno supports output dimensions up to 16,000 × 16,000 pixels, limited by your browser's memory.