Image Resizer
Resize by exact pixels or percentage, with aspect-ratio lock.
Drop your file here or browse
JPG, PNG or WEBP · up to 20 MB
How to resize an image
- 1Drop your JPG, PNG or WEBP file into the box above.
- 2Enter the exact width or height in pixels — with the aspect-ratio lock on, the other side is calculated automatically. Or switch to Percentage and drag the slider.
- 3Choose an output format and quality if you want to change them.
- 4Click Resize image, preview the result and download it.
Common resize targets
Popular sizes: 1920×1080 for full-HD wallpapers and covers, 1280×720 for YouTube thumbnails, 1080×1080 for Instagram posts, 820×312 for Facebook covers and 400×400 for profile pictures. Enter the width, keep the lock on, and crop later in your favorite editor if the ratio differs.
Supported formats
Input: JPG, PNG and WEBP up to 20 MB. Output: same format, or convert while resizing. Maximum output size is 12,000 pixels per side.
Frequently asked questions
›Will resizing reduce my image quality?
Shrinking an image is nearly lossless visually — we use high-quality interpolation. Enlarging beyond the original size can't invent detail, so the result may look soft; the tool warns you when you're upscaling.
›How do I keep the aspect ratio?
The link icon between the width and height fields locks the aspect ratio (on by default). Change one side and the other updates automatically, so your image is never stretched.
›Can I resize by percentage?
Yes — switch to the Percentage tab and drag the slider from 1% to 200%. The resulting pixel dimensions are shown live.
›Are my photos uploaded anywhere?
No. Resizing happens locally in your browser. Your photos never touch our servers.