← All Tools

Image Optimizer

Convert & compress images in bulk. Supports PNG, JPG, and WebP.

Ad 728x90

Drop images here or click to browse

PNG, JPG, WebP, GIF -- up to 50 MB per file

Conversion Settings

10%100%

Bulk Image Converter & Compressor for the Web

Optimize your images for faster website loading times and better Core Web Vitals scores. Convert between PNG, JPG, WebP, and GIF formats while reducing file sizes by up to 80% with minimal visual quality loss. The built-in before/after comparison lets you find the perfect balance.

Every image is processed entirely in your browser using the Canvas API — nothing is uploaded to external servers. This is especially important for photographers, designers, and businesses handling proprietary visual content. Process dozens of images simultaneously with batch conversion.

WebP format delivers superior compression compared to JPG and PNG, making it the preferred choice for modern websites. Use our optimizer to convert your entire image library to WebP and dramatically improve your page load speeds and SEO rankings.

Frequently Asked Questions

Which image format is best for the web?
WebP offers the best combination of quality and compression for the web -- it produces files 25-35% smaller than JPG at the same visual quality. JPG is a safe fallback when you need maximum compatibility with older software. PNG is ideal for images that require transparency, such as logos and icons.
Does converting images reduce their quality?
It depends on the format and quality setting. PNG is lossless, so quality is always preserved. JPG and WebP use lossy compression, meaning some quality is traded for smaller file sizes. A quality setting of 80% is usually a good balance -- most people cannot tell the difference from the original at that level.
Can I resize images while converting?
Yes. Switch the resize mode to "Custom" and enter maximum width and height values. Images larger than these dimensions will be scaled down while preserving their aspect ratio. Images that are already smaller than the specified dimensions will not be enlarged, preventing upscaling artifacts.
Are my images uploaded to a server?
No. All image processing happens locally in your browser using the Canvas API. Your images never leave your device, ensuring complete privacy. You can verify this by disconnecting from the internet -- the tool still works.
How many images can I convert at once?
There is no hard limit on the number of images. The tool processes them one by one to avoid overwhelming your browser's memory. For large batches, the progress bar shows how far along you are. When done, use "Download All as ZIP" to grab everything at once.