Image Resizer
Resize by pixels or percentage with the aspect ratio locked by default, so images never get squashed. Invalid or impossible sizes are rejected with a clear message.
1 · Choose a file
📂
Choose a file or drop it here
Click to choose another file, or drop to replace
2 · Settings
Original: —
Output: —
Browsing is free — sign in only when you start processing.
3 · Result
The preview and download will appear here after processing.
How to use
- Choose an image and check its original size.
- Enter width/height in pixels (ratio lock optional) or set a percentage.
- Click "Start processing" and sign in.
- Preview the output size and download.
FAQ
Why is the aspect ratio locked?
It prevents accidental distortion. Uncheck "Lock aspect ratio" to set width and height independently.
How large can I go?
Each side is capped at 12,000 px and the total area at ~268 MP (browser canvas limits). The tool explains instead of producing a broken image.
Why does upscaling look blurry?
Upscaling interpolates existing pixels; original detail cannot be recreated. This is a physical limit of every tool.
Does it change the file format?
No — output keeps the original format.