Free online tool
Image resizer
Resize images to exact pixel dimensions while preserving the original aspect ratio.
Full capability guide
Resize without accidental distortion
Resize each source by pixels, percentage or longest edge with explicit fitting and enlargement rules.
Three sizing modes
Use exact dimensions, a relative percentage or one longest-edge limit across mixed-size batches.
Contain, cover or stretch
Contain preserves the full image, cover crops edges to fill the canvas, and stretch changes proportions only when selected.
Background and presets
Use transparent or solid contain backgrounds with Square, Portrait, Landscape, Story, HD and Social presets.
High-quality batch control
Every source is calculated independently with optional no-upscale protection, per-file reprocessing and high-quality resampling.
More image tools
How to resize an image
- Add JPG, PNG or WebP images.
- Choose pixels, percentage or longest edge, then select Contain, Cover or Stretch when exact dimensions are used.
- Choose output quality and format, review the result metrics, then download individual files or the batch.
Resize without unwanted distortion
Contain preserves the entire source without distortion, adding background space when proportions differ. Cover fills the requested canvas by cropping edges. Stretch forces the exact width and height and should be used only when changing proportions is intentional.
Downscaling usually produces a cleaner result and a smaller file. Enlarging creates more pixels but cannot recover missing detail. When composition also needs to change, make a selection with the image cropper before resizing.
Common image dimensions
| Use | Width | Height |
|---|---|---|
| Square social post | 1080 px | 1080 px |
| Widescreen image | 1920 px | 1080 px |
| Profile image | 512 px | 512 px |
Image resizing FAQ
How do I avoid stretching?
Leave Keep aspect ratio enabled and edit only one dimension.
Can resizing make a small image sharper?
Increasing dimensions adds pixels but cannot recreate source detail. For best quality, start with the largest original available.
Can I resize several images together?
Yes. Every selected file receives the same output dimensions.