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Resize images without losing quality
Every platform wants images at a different size: website hero banners, product photos, passport-style uploads, email signatures and social posts. This free image resizer changes the pixel dimensions of your picture quickly and cleanly, with no software to install and no file leaving your computer.
When you shrink an image by a large amount, the tool scales it down in several smaller steps instead of one big jump. This step-down technique keeps edges and text sharp and avoids the jagged look that many quick resizers produce.
How to resize an image
- Drop an image into the box, click to browse, or paste it from your clipboard.
- Choose By pixels to type an exact width and height, or By percentage to scale it proportionally.
- Keep Keep aspect ratio ticked so the height updates automatically when you change the width.
- Pick an output format and quality, then press Resize image.
- Check the preview and click Download resized image.
Features
- Exact pixel sizing up to 16,384 pixels per side, or 5–200% scaling.
- One-click presets for Full HD, Instagram and common web widths.
- Automatic aspect-ratio lock to prevent stretched or squashed images.
- Convert between JPEG, PNG and WebP while resizing.
- Descriptive file names that include the new dimensions, such as
photo-1280x720.jpg.
Popular image sizes
| Use | Recommended size |
|---|---|
| Website full-width banner | 1920 × 1080 px |
| Blog featured image | 1200 × 630 px |
| Instagram square post | 1080 × 1080 px |
| Instagram or TikTok story | 1080 × 1920 px |
| YouTube thumbnail | 1280 × 720 px |
| Email signature logo | 300 × 100 px or smaller |
Who uses an image resizer?
- Bloggers and site owners who want fast-loading pages and consistent featured images.
- Online sellers preparing product photos that meet marketplace size rules.
- Students and job seekers uploading photos to application portals with strict dimension limits.
- Social media managers creating graphics for several platforms from one original.
Tip: making a small image larger cannot add detail that was never captured. For the sharpest results, always resize down from the largest original you have, then run the result through our Image Compressor to reduce the file size further.
Frequently asked questions
Does resizing reduce image quality?
Making an image smaller keeps it sharp because the tool uses high-quality, multi-step downscaling. Making an image much larger than its original size will look softer, because no tool can invent missing detail.
How do I resize an image without stretching it?
Leave “Keep aspect ratio” switched on. When you change the width, the height is calculated automatically to match the original proportions.
Can I resize to an exact size like 600 × 600?
Yes. Untick “Keep aspect ratio” and type both values. If the original is not square the image will be stretched, so use the Image Cropper first to cut a square area.
Is there a limit on file size?
No server limit applies because nothing is uploaded. Very large images may take a few seconds on older phones.
Which format should I save in?
Use JPEG or WebP for photos and PNG for graphics with sharp text or transparency.
Related tools
Shrink file size after resizing.
Image CropperCut images to any aspect ratio.
Background RemoverMake transparent product and profile photos.