Image Resizer
Resize by exact pixels, percentage, or fit-within-bounds.Image ToolsDrop your images here
Common raster image formats
Up to 25 MB per file · up to 20 files
Resize settings
Your files are processed on this device. Nothing is uploaded to a server.
About this tool
Resize a single image or a whole batch using the same settings. Choose exact pixel dimensions, a percentage scale, or a maximum bounding box that keeps the aspect ratio locked. Dimensions are computed before any pixel work starts, so you can see the target size up front.
How to use the Image Resizer tool
- Add images. Drop JPG, PNG, WebP or AVIF files into the drop area. Several files can share one resize setting.
- Pick a resize mode. Exact (set width and height), Percentage (scale uniformly), or Fit (constrain the longest side while preserving the aspect ratio).
- Choose the output format. Keep each source format, or standardise the batch to PNG, JPEG or WebP. Then resize and download.
Supported formats
Input
- JPEG
- PNG
- WebP
- AVIF (browser-dependent)
- GIF / BMP (first frame)
Output
- Same as source
- PNG
- JPEG
- WebP
Inputs are validated before anything is processed. Invalid values and unsupported files are rejected with a clear error instead of failing silently.
Frequently asked questions
Will resizing stretch my image?
Not by default. Percentage and Fit modes always preserve the aspect ratio. In Exact mode, use the lock toggle to derive one dimension from the other; without it, both values are applied literally.
Can I upscale a small image?
Yes, but upscaling cannot create detail that was not captured. The browser uses bicubic-style smoothing, which looks clean for modest enlargements and soft for large ones.
Is there a maximum output size?
Outputs are capped at 16,384 px per side to stay within common browser canvas limits. Values above that are clamped and the applied size is shown in the result.
Does resizing remove metadata?
Yes — drawing into a canvas and re-encoding produces a fresh file without EXIF, GPS or comment chunks. If you want to keep the pixels but strip metadata losslessly, use the EXIF Remover instead.
Privacy
Images are decoded and redrawn locally. No server sees either the source or the resized output.
No account is required and no file is ever uploaded. See the privacy policy for details about analytics and the limited data this site stores.
Known limitations
- Upscaling cannot restore detail lost in the source image.
- Output dimensions are clamped to 16,384 px per side for browser canvas compatibility.
- Animated formats export the first frame only.
Related tools
Other free tools from the same collection.