Resize Images Online Free
Set exact pixel dimensions or scale by percentage. Pick from presets (HD, 4K, Instagram) or enter custom sizes. Batch resize multiple images at once.
How to Resize Images
Set Target Size
Choose "By Pixels" to enter exact width and height, or "By Percentage" to scale up or down proportionally. Lock the aspect ratio to prevent distortion.
Upload Images
Drop one or multiple images onto the upload area. All images get the same target dimensions. Processing happens entirely in your browser.
Download Resized Images
Download each resized image individually or grab all as a ZIP. Output format matches the original file type.
Frequently Asked Questions
What does "lock aspect ratio" mean?
When aspect ratio is locked, you only set the target width. Each image's height is automatically calculated to preserve its original proportions — preventing stretching or squishing.
Can I resize multiple images at once?
Yes. Upload as many images as you want. All images will be resized to the same target dimensions (or percentage). Download them individually or as a ZIP.
Does resizing reduce image quality?
Scaling down (making images smaller) has minimal visible quality loss. Scaling up (enlarging) will soften details as the tool uses bicubic-equivalent canvas interpolation. For AI upscaling, a dedicated tool is needed.
What is the maximum image size I can resize?
There is no hard limit. Processing uses the browser Canvas API. Images up to 6000×6000 px work well on modern devices. Very large images (over 10,000 px wide) may require significant memory.
What file formats are supported?
JPG, PNG, WebP, GIF, and BMP are all supported for upload. Output format matches the original file type. Use the Convert Image tool to change the format.