Image Resizer, Compressor & Converter
How it Works
Select your image by dragging and dropping it into the drop zone. Choose to resize by pixels (exact width and height) or by percentage. Once settings are configured, you can optimize the quality and choose to convert the format into WebP, PNG, or JPEG. Your new image is re-compressed on the fly using HTML5 Canvas rendering for instant download.
100% Secure
Since the processing happens on your local device, we don't store or transmit your images in our server network. Your data stays entirely in your browser memory, offering the fastest and most secure solution.
Frequently Asked Questions
Will resizing an image reduce its quality?
Enlarging an image reduces quality — there's no information to fill the new pixels, so the result looks blurry or pixelated. Reducing an image generally preserves quality well, especially when you also set a reasonable JPEG/WebP quality setting (80–90% is usually indistinguishable from the original at smaller dimensions).
What is the difference between resizing and compressing?
Resizing changes the pixel dimensions (width × height). Compressing reduces the file size by encoding the existing pixels more efficiently — the dimensions stay the same but the file is smaller. Both are often done together: resize to the display dimensions, then compress for the web.
What format should I save resized images in?
WebP is the best choice for web use — it's smaller than JPEG and PNG at equivalent visual quality and is supported by all modern browsers. JPEG is best for photos. PNG is best for images with transparency or sharp edges (icons, screenshots, logos). Avoid PNG for photos — file sizes are much larger than JPEG for no visible benefit.
Does this tool upload my images to a server?
No. All processing happens in your browser using the HTML5 Canvas API. Your images are never uploaded anywhere.
What is 'Keep Aspect Ratio'?
Keeping the aspect ratio means the width-to-height proportion stays constant. If you resize a 1920×1080 image to width 960, the height automatically becomes 540. Without this, you can set width and height independently, which can distort the image.