Image Resizer
Resize images while keeping aspect ratio and converting formats
Click or drag to upload image
PNG, JPG, WebP, GIF (max 20MB)
Overview
Resize images and convert between formats. Keep the aspect ratio while resizing, or convert between PNG, JPEG, and WebP. Quickly adjust images for blog thumbnails, social media profiles, email attachments, and more. All processing happens in the browser.
Key Features
- Width / height resize (aspect ratio lock option)
- PNG, JPEG, WebP format conversion
- JPEG quality (compression) setting
- Original vs result preview
- Drag-and-drop file upload
- Download converted image
How to Use
- Upload an image by dragging and dropping or selecting a file.
- Enter the desired dimensions or scale by percentage.
- Choose the output format and click Download.
Tips
- WebP is smaller than JPEG/PNG at the same quality -- great for web optimization.
- Use PNG or WebP if you need a transparent background. JPEG does not support transparency.
- Enlarging an image degrades quality. Stick to downsizing from the original when possible.
FAQ
- Is the image uploaded to a server?
- No. All processing uses the browser Canvas API and runs locally. Images are never sent externally.
- Can I resize GIF files?
- Static GIFs can be processed, but per-frame resizing of animated GIFs is not supported.
- Can I process multiple images at once?
- Currently only one image at a time is supported. Batch processing may be added in the future.