How to Use
- Drop an image or choose a JPG, PNG, or WebP file.
- Enter a target width or height, or pick a preset.
- Keep aspect ratio locked to avoid distortion.
- Choose an output format and adjust JPG/WebP quality if needed.
- Preview the output dimensions, then download the resized image.
Core Features
- Resize by exact pixels: Enter a target width or height to create a clear output size.
- Aspect ratio lock: Keep proportions by default so images do not stretch.
- Useful presets: Start with avatar, Open Graph, YouTube thumbnail, Instagram square, and other common sizes.
- Format and quality controls: Export JPG, PNG, or WebP and balance file size against clarity.
- Local image processing: Resize and export with Canvas in your browser without uploading images.
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Calculation Logic
The tool uses browser Canvas APIs to resize images locally:
- When aspect ratio is locked, the opposite side is calculated from the original width and height.
- Upscaling increases pixel dimensions but cannot recreate missing detail.
- JPG/WebP quality settings affect both file size and visual quality.
- Canvas export creates a new image file; this tool does not claim full EXIF or metadata management.
FAQ
Are my images uploaded?
No. Images are decoded, resized, and exported in your browser without server upload.
Can I resize to exact pixels?
Yes. Enter the target width or height to generate that output size.
How do I keep the image from stretching?
Keep aspect ratio locked. The tool calculates the other side from the original proportions.
Which formats are supported?
The first version supports JPG, PNG, and WebP input, with JPG, PNG, and WebP export.
Does resizing reduce quality?
Downsizing usually keeps a good visual result. Upscaling adds pixels but cannot restore missing detail.
Can I crop or batch resize images?
The first version focuses on single-image resizing, aspect ratio locking, and format export. Crop and batch workflows are not included yet.