Compress Image
Reduce JPG, PNG and WebP file sizes directly in your browser.
Resize Image
Resize JPG, PNG and WebP images by pixels or percentage directly in your browser.
Your files stay on your device.
Files are processed locally in your browser and are not uploaded to our servers.
Drop image here Drop to add
or
JPG, PNG and WebP · Up to 50 MB
Your image
- Format
- File size
- Dimensions
- Reading…
Choose an image first. Its size will appear here.
Lower quality gives a smaller file. Around 70 to 85 is a good balance for photos.
PNG is lossless, so there is no quality setting.
Resizing image…
Result
How to resize an image
- Choose a JPG, PNG or WebP image, or drop it onto the box above.
- Enter a new width or height, pick a percentage or choose a preset size. The fields start at your image's current size.
- Optionally choose another output format and, for JPG or WebP, the quality.
- Click Resize Image, compare both versions and download the result.
Resize by pixels
Width and height are measured in pixels. With Keep aspect ratio switched on, you only need to enter one of them: the other is calculated so the picture keeps its proportions. Switch it off to set both freely. The image is then scaled to exactly that size, which stretches or squeezes it if the proportions differ. Nothing is cropped.
Resize by percentage
A percentage scales both sides by the same amount. 50 % turns a 4000 × 3000 image into 2000 × 1500. Note that the number of pixels then drops to a quarter, because both width and height are halved. Values above 100 % enlarge the image.
What happens when you enlarge an image?
Making an image larger adds pixels, but it cannot add detail that was never captured. The browser calculates the new pixels from their neighbours (interpolation), so the result has bigger dimensions but looks softer when viewed at full size. Enlarging is useful when a form or template requires a minimum size; it is not a way to improve a blurry or low-resolution photo.
Why the aspect ratio matters
The aspect ratio is the relationship between width and height, such as 4:3 or 16:9. Keeping it means people and objects look natural. If you need a different shape, for example a square, choose a preset: with the aspect ratio locked, the image is fitted inside that size without distortion.
Supported formats
- JPG: photos; you can set the quality.
- PNG: lossless, keeps transparency; no quality setting.
- WebP: compact, keeps transparency; you can set the quality.
By default the result keeps the format of your original. If you save a transparent PNG or WebP as JPG, transparent areas get a background colour of your choice, white by default.
Need a smaller file instead of different dimensions?
Resizing changes how many pixels an image has. If your goal is a file under a certain size, such as 500 KB, use Compress Image instead: it finds the best quality for your limit and only reduces the dimensions when it has to.
Your images stay on your device
Resizing happens in your browser. Your image is not uploaded or stored anywhere. Images and results larger than 40 megapixels are not supported, because they would exceed what a browser tab can safely handle.
Frequently asked questions
How do I resize an image?
Choose your image in the tool above, enter a new width or height (or pick a percentage or preset), then click Resize Image and download the result. Your original file stays unchanged.
Can I resize an image without changing the aspect ratio?
Yes, that is the default. With "Keep aspect ratio" on, changing the width updates the height automatically and the other way round, so the image keeps its proportions.
Can I make an image larger?
Yes. Enter larger dimensions or a percentage above 100 %. The tool warns you when you enlarge an image, because upscaling increases pixel dimensions but does not add new image detail.
Does resizing an image reduce quality?
Making an image smaller removes pixels, so fine detail is lost, but on screen the result usually looks sharp at its new size. For JPG and WebP, the quality setting also affects the result; PNG is saved without loss.
Can I resize a PNG with transparency?
Yes. If you keep PNG (or choose WebP) as the output format, transparency is preserved. JPG cannot store transparency, so if you save as JPG you choose a background colour for the transparent areas.
What is the difference between resizing and compressing?
Resizing changes the pixel dimensions, for example from 4000 × 3000 to 2000 × 1500. Compressing aims for a smaller file size, mainly by lowering the quality, and keeps the dimensions where possible. If you need a file under a size limit, Compress Image is the better tool.
Are my images uploaded?
No. Your image is resized by your own browser and never sent to our server. Nothing is stored after you close the page.
Does resizing keep the photo metadata?
Not in the new image: your browser saves it without camera details, the date taken or GPS location. Photos are turned upright first, so they still display correctly. To see what a photo contains, use View Image Metadata before resizing. If the tool offers your original unchanged, its metadata stays as it was.