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How to Use
- 1Click the upload area to select an image from your device.
- 2Adjust width and height manually or use quick scale presets (25%, 50%, 75%).
- 3Enable aspect ratio lock for proportional resizing.
- 4Choose output format: JPEG, PNG, or WebP.
- 5Adjust the quality slider for JPEG/WebP compression.
- 6Click 'Resize & Compress' and download the result.
About Image Resizer & Compressor
The Image Resizer & Compressor lets you resize images to exact pixel dimensions and compress them to reduce file size — all in your browser. Quick scale presets make common resizing instant, and aspect ratio locking ensures proportional output.
Choose between JPEG (photos), PNG (transparency/lossless), and WebP (best compression ratio). WebP files are typically 30–50% smaller than equivalent JPEG at the same visual quality. The quality slider fine-tunes the trade-off between size and fidelity.
Common uses: optimizing product photos for e-commerce, resizing screenshots for docs, preparing email-ready images, and converting camera photos to web sizes. All processing uses the Canvas API locally — images never leave your device.
Frequently Asked Questions
Are my images uploaded to a server?
No. All processing happens in your browser using the Canvas API. Your images never leave your device.
Which format gives the smallest file size?
WebP generally provides the best compression with good quality. JPEG is the fallback for wider compatibility. PNG is lossless but produces larger files.
What is the maximum image size?
Dimensions should stay between 1 and 10,000 pixels per side. Very large images may be slower depending on your device's memory.
Why is the quality slider disabled for PNG?
PNG is a lossless format that preserves all image data. Quality compression only applies to lossy formats like JPEG and WebP.
What quality setting works best for web images?
80–85% for JPEG or WebP is ideal — virtually identical to the original but significantly smaller. Use 60% for thumbnails where size matters more than detail.