Image Resizer — Change Image Dimensions Online
Need a photo at exactly 1080px, a passport-sized image, or just half the size? This resizer changes an image's dimensions precisely — by pixels or percentage — with an optional locked aspect ratio so nothing looks stretched. Runs privately in your browser; your image is never uploaded.
How to use this tool
- Drop or choose your image — its current dimensions appear automatically.
- Type a new width or height. With aspect ratio locked, the other value updates for you.
- Press Resize and preview the result.
- Download the resized image — original stays untouched on your device.
Frequently asked questions
Will resizing stretch or distort my image?
Not if you keep Lock aspect ratio ticked — then width and height scale together and the image keeps its proportions. Unlock it only when you deliberately need a specific non-proportional size.
Can I make an image larger without losing quality?
You can enlarge, but images don't gain detail that wasn't captured — upscaling beyond the original size looks softer. For big enlargements, dedicated AI upscalers do better; this tool is ideal for reducing or modest increases.
What size should a passport or profile photo be?
It varies by use: many online passport applications want specific pixel dimensions (e.g. 600×600), and social profiles often use 400×400. Check the exact requirement, enter it here with the ratio locked (crop first if needed), and download.
Is my photo uploaded anywhere?
No. Resizing happens locally in your browser, so your image never leaves your device — safe for personal documents and ID photos.
Which format should I keep?
The tool keeps your original format. JPG suits photos, PNG preserves transparency and sharp graphics. To change format too, use our Image Converter afterwards.