How to use Resize Image
- Add one or more images from a phone (iPhone or Android) or a computer, or take new ones with the camera.
- Choose "Pixels" to set a width and height, "Percentage" to scale, or "Print size" to type centimetres, millimetres or inches and a DPI.
- Keep "Lock aspect ratio" on to avoid stretching.
- Click "Resize image" and download the results.
Why use Resize Image
- Exact pixel sizes
- Set width, height or both.
- Aspect ratio lock
- Images fit inside your size without being stretched.
- No accidental upscaling
- Small images are left alone unless you allow enlarging.
- Batch resize
- Apply the same size to many images at once.
- Print sizes in cm, mm and inches
- Type 10 × 15 cm, 35 × 45 mm or 4x6 inches and a DPI: the pixels are worked out for you, and the DPI is written into the JPG or PNG so the photo keeps that print size.
About this tool
Portals often reject images that are too large or the wrong size. Resizing to the requested dimensions avoids rejected uploads and makes pages load faster.
Resizing uses high-quality smoothing in your browser. Downscaling keeps images sharp; enlarging cannot add detail that was not in the original.
Frequently asked questions
How does the aspect ratio lock work?
With the lock on, the image is scaled to fit inside the width and height you enter, so nothing is stretched. Enter just one side to scale the other automatically.
Can I make a small image bigger?
Yes, turn on "Allow enlarging". The image will be bigger but not more detailed.
Which format will I get?
The same format as the original by default. You can switch to JPG, PNG or WebP.
Can I resize many images at once?
Yes. Add as many as you like and download them together as a ZIP.
Are my images uploaded?
No. Resizing is done by your browser on your device.
What size should I use for social media?
Common sizes are 1080 × 1080 pixels for an Instagram post, 1080 × 1920 for stories and reels, 1200 × 630 for Facebook and LinkedIn link images and 1280 × 720 for YouTube thumbnails. Type the width and height, or unlock the ratio.
Will resizing make my photo blurry?
Making an image smaller keeps it sharp. Making it bigger than the original spreads the same pixels further, so it can look soft; to enlarge a photo, use the AI image upscaler, which redraws the detail.
Can I resize an image without losing quality?
Making an image smaller keeps it sharp. Making it much bigger cannot add detail that is not there, so for enlarging use the Image Upscaler, which keeps edges sharp without losing quality.
Photo resize kaise kare, photo ka size kaise badhaye? (How do I resize a photo on my phone?)
Mobile se photo chunein, width aur height pixels me likhein aur "Resize image" dabayein; bara karna ho to "Allow enlarging" on karein. On a phone or a computer, add the photo, type the width and height in pixels or pick a percentage, and tap "Resize image". To make a small photo bigger, turn on "Allow enlarging". It gets bigger, though not more detailed.
What does DPI mean, and which should I use?
DPI (dots per inch) is how many pixels go into each inch of paper. The same 1200 × 1800 pixel photo prints at 4 × 6 inches at 300 DPI, or at 8 × 12 inches at 150 DPI. Use 300 DPI for photo prints, 150 for forms and documents read on a screen, and 72 only for the web. Under "Print size" the tool works out the pixels and writes the DPI into the JPG or PNG, so programs that read it, such as Word, place the picture at that size. WebP has no place for a DPI.
How do I resize a photo to 4x6 inches or 10 × 15 cm?
Choose "Print size", pick inch and type 4 and 6 (or cm with 10 and 15), keep 300 DPI and click "Resize image": 4 × 6 inches at 300 DPI is 1200 × 1800 pixels, 10 × 15 cm is 1181 × 1772, and a 35 × 45 mm passport size is 413 × 531. With "Lock aspect ratio" on, a photo of another shape fits inside that size; turn it off to fill it exactly, or crop the photo to that shape first. A photo too small for the size asked is not quietly made smaller: the tool says so, and you can allow enlarging or lower the DPI.
Can I resize a photo I take with my phone or webcam?
"Take a photo" on a phone, or "Use the webcam" on a computer, opens the camera in the page; take your shots, tap Done, and they join the list at the full size the camera gave. On a computer you can also scan the code under "Use your phone's camera" and shoot with the phone, and each photo comes over to be resized. On an iPhone or an Android phone the whole tool runs in the browser: resize the photo to the pixels or the social-media size you need, without cropping, and save it to Photos on an iPhone or to your files on Android.
Built and maintained by Saad Naeem
AI engineer, Doha · Updated