WebP Image Optimizer

What It Does

Converts JPG, PNG, GIF, BMP, TIFF, and existing WebP files into fresh WebP exports directly in the browser. You can tune compression quality, optionally downscale large images, and compare the original file size against the optimized output before downloading.

Why WebP

WebP delivers 25–35% smaller files than JPEG at equivalent visual quality and supports lossless, lossy, and transparency in a single format. All major browsers have supported it since 2020.

How It Works

When you add an image, the tool reads the file locally with the browser File API, draws it into an off-screen canvas, then exports a new image/webp file with your selected quality setting. If you provide a max width or height, it resizes the image before encoding so you reduce both pixel dimensions and file weight in a single pass. Nothing is uploaded or processed on a remote server.

If you want the technical SEO angle, read WebP for SEO: How Your Image Format Directly Affects Google Rankings . If you want the compression and format basics, read Why Use WebP Format? The 90% Compression Advantage Explained .

How To Use

• Drop or select up to 20 image files.
• Set quality (80 is a good default; lower = smaller file).
• Optionally set a max width or height to scale images down.
• Click Convert to WebP and download individually or all at once.

Where It Pays Off

The obvious case is a slow website. Images are usually the heaviest thing on a page, and a 3 MB hero photo exported straight from a phone camera is doing real damage to your load time. Run it through here at quality 80 with a max width of 1920 and you'll typically ship a fraction of the bytes with no visible difference. The same goes for product galleries before a bulk upload, screenshots for documentation, and email attachments that keep bouncing off size limits. The savings badge on each result card tells you exactly how much you gained — and if a file somehow got bigger (it happens with already-optimized images), the badge shows that too instead of hiding it.

Frequently Asked Questions

Are my images uploaded anywhere?

No. The whole conversion runs in your browser tab using the File API and canvas. Your files never leave your machine, which also means the tool works the same on a confidential design mockup as on a vacation photo.

What quality setting should I use?

Start at 80. For photos, most people can't tell 80 from 100, but the file size difference is dramatic. Drop to 60–70 for thumbnails; push higher only if you're seeing artifacts in flat color areas or text.

Does resizing distort the image?

No. Max width and max height are caps, not exact targets — the aspect ratio is always preserved, and images already smaller than your limits are left at their original dimensions.

Can it convert WebP to WebP?

Yes, and it's a legitimate use: re-encoding an existing WebP at a lower quality or smaller dimensions is a quick way to shrink a file that's still too heavy.