Add at least one image to start.
How to resize an image
- Choose your images, or drop them on the box.
- Type the new width in pixels, or switch to percent (for example 50 for half size). The height changes automatically so the picture is not stretched.
- Pick JPG, PNG or WebP and tap Resize images. Save each file or all of them as a ZIP.
About this tool
Large photos from a modern phone can be 4000 pixels wide or more. That is far bigger than most websites, forms and chat apps need, and it makes uploads slow. Making the picture smaller is the quickest way to also make the file smaller.
The height is always worked out from the width, so your picture keeps its shape. By default the tool will not enlarge a small picture, because stretching adds blur but no detail. You can turn that off if you really need a bigger canvas.
Everything runs inside your browser, so your pictures are never uploaded to any server.
Tips and common problems
- For WhatsApp, email and most forms, a width of 1280 pixels is plenty. For a website, 1200 to 1600 pixels is usual.
- For profile pictures, 400 to 800 pixels wide is enough. Crop to a square first in your photo app if the site needs a square.
- Need an exact width and height? The height is set from the width, so pick the width and check the result. Crop in your photo app if the shape must be different.
- Still too many megabytes? Lower the quality, or use the Image Compressor after resizing.
- Do not enlarge small pictures. Keep the box ticked. A bigger version of a small picture only looks blurry.
- Keep your original. Resizing creates new files and leaves your first picture untouched.
Common questions
Will resizing make the picture blurry?
Making a picture smaller keeps it sharp. Making it bigger than the original makes it blurry, so the tool does not enlarge by default.
Does the picture get stretched?
No. You choose the width and the height follows, so the picture keeps its proportions.
Can I resize many images at once?
Yes. Add as many as you like, set the size once, and save them one by one or all together as a ZIP.
What is the best size for WhatsApp or email?
A width of about 1280 pixels is good. It looks sharp on phones and keeps the file small.
Are my images uploaded?
No. Everything runs on your own device and your images are not sent to us.
Image Resizer in detail
Size in pixels versus size in kilobytes
These two are different things. The pixel size (for example 1200 by 800) is how many dots wide and tall the picture is. The file size in kilobytes or megabytes is how much storage it uses. Making the pixel size smaller almost always makes the file smaller too, and it is the most effective way to shrink a large phone photo.
Resize by width or by percent
Choose Width in pixels when a form or website tells you the exact width it needs; the height follows automatically so the picture is not stretched. Choose Percent when you simply want it smaller, for example 50 percent to halve each side. A phone photo that is 4000 pixels wide is far larger than most screens need, so 1600 or 2000 pixels is plenty for sharing.
Do not enlarge small pictures
Making a picture bigger than it was cannot add detail that was never there, it only makes it look soft. Resize down whenever you can, and keep your original for printing.
Format and quality
You can save the result as JPG, PNG or WebP. JPG is best for photos, PNG for graphics and screenshots, and WebP gives the smallest files on modern devices. The quality option lets you trade a little detail for a smaller file. Many pictures can be resized together and saved as a ZIP.
Typical uses
Profile pictures, product photos for an online shop, images for a blog post, pictures that must fit a form limit, and photos you want to send quickly on a slow connection. Always check the exact size an application asks for, because each site has its own rules.
Read the guide: How to Reduce Image Size Without Losing Quality
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