Image Resizer & Compressor
Resize and shrink image file size, right in your browser
Drag & drop an image, or
Large photos slow down websites, bounce off email attachment limits, and eat up storage. This image resizer and compressor lets you resize any image to exact dimensions and compress it down to a smaller file size, all processed locally in your browser using the canvas API — your image is never uploaded to a server.
How to Use the Image Resizer & Compressor
- 1Drag and drop an image, or click to choose a file.
- 2Adjust the width and height (lock the aspect ratio to avoid distortion).
- 3Pick an output format — JPEG for photos, PNG for transparency, or WebP for the smallest size.
- 4Drag the quality slider and download the compressed image.
Why Use This Tool
- 100% client-side — your images never leave your device.
- Live before/after file size comparison as you adjust quality.
- Supports JPEG, PNG and WebP output.
- Aspect-ratio lock prevents accidental stretching.
Frequently Asked Questions
Is my image uploaded anywhere?
No, all resizing and compression happens locally in your browser using HTML5 canvas — your image data is never sent to any server.
Which format gives the smallest file size?
WebP typically produces the smallest file size at a given quality level, followed by JPEG for photos; PNG is best reserved for images that need transparency or sharp edges like logos.
Will resizing reduce image quality?
Reducing dimensions itself doesn't blur a photo, but shrinking below the display size and then enlarging it later will cause quality loss — lowering the quality slider on JPEG/WebP also introduces some compression artifacts at very low settings.