Zylaro Tools / Image Resizer
Resize images online, instantly
Set exact pixel dimensions, lock the aspect ratio, and convert between JPG, PNG and WebP — all inside this tab. Nothing you select ever leaves your device.
↕ Scroll inside the preview to see the full image
Resize settings
Locked — width and height scale together. Click the lock to set an exact width and height independently.
Your resized image is ready
Download imageFree image resizer, no installs
This tool resizes JPG, JPEG, PNG and WebP images directly in your browser. Enter the dimensions you need, keep the aspect ratio to avoid stretching, and export in whichever format works best for where the image is going — WebP for the smallest file size, PNG for transparency, or JPG for broad compatibility.
How to resize an image
- Click the upload area, or drag a file onto it.
- Enter the width and height you want, in pixels — or pick a ready-made social media size.
- Leave the lock icon closed to scale proportionally, or click it open to set an exact width and height independently.
- Pick an output format — JPG, PNG or WebP.
- For JPG or WebP, adjust the quality slider if you want a smaller file.
- Click "Resize image," then download the result.
Does this upload my image to a server?
No. Resizing happens on your own device using the browser's built-in canvas. Your file is never sent anywhere, which also means it's ready almost instantly, even for large images.
Which format should I choose?
WebP usually gives the smallest file for a given quality level, and is well supported by modern browsers. PNG is the right choice when you need transparency. JPG remains the safest choice for maximum compatibility, such as email attachments or older software.
Frequently asked questions
Is this image resizer really free?
Yes — resizing, converting, and downloading are free, with no account and no watermark.
Can I resize a JPG or JPEG file?
Yes, JPG and JPEG images are fully supported, both as input and as output.
Can I resize a PNG and keep transparency?
Yes. Export as PNG to keep transparency, or export as JPG/WebP if you don't need it.
Can I convert between formats while resizing?
Yes — pick JPG, PNG or WebP as the output format regardless of what you uploaded.
Can I set an exact width and height that don't match the original ratio?
Yes. Click the lock icon between the width and height fields to unlock it — each field then becomes independent, so you can type any exact size, or use one of the popular-size buttons.
Is there a size limit?
Images up to 10,000 × 10,000 pixels and 25 MB are supported, which covers the vast majority of photos and screenshots.
Do I need to install anything?
No. It works in any modern browser on desktop or mobile, with no extension or app required.