Does compressing an image reduce quality?

At moderate compression levels (the default), the quality loss is invisible to the human eye. The file size reduction is typically 50–80% with no visible difference.

Is my image uploaded to a server?

No. This tool runs entirely in your browser using the HTML5 Canvas API. Your images are never uploaded or sent anywhere.

What is WebP and why should I use it?

WebP is a modern image format developed by Google. It produces files 25–35% smaller than JPEG and PNG at equivalent quality. Google PageSpeed and Core Web Vitals reward WebP images — switching reduces your page load time.

How much does image size affect website speed?

Image files are typically the largest elements on a webpage. Unoptimised images are the most common cause of slow load times. A 3MB hero image that becomes 400KB can reduce page load time by 1–3 seconds.

What image formats does this tool support?

It supports JPEG/JPG, PNG, and WebP as input. Output can be JPEG, PNG, or WebP.

What compression quality should I use?

75–85% quality produces the best balance of file size and visual quality for website use. For thumbnails or background images, 60–70% is acceptable.

Can I compress multiple images at once?

Currently this tool processes one image at a time. For batch compression, use a desktop tool or ask your developer to automate image processing in your CMS.

Will Google penalise me for large images?

Google measures Core Web Vitals including Largest Contentful Paint (LCP). Large uncompressed images significantly worsen LCP scores, which affects both user experience and search rankings.

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WebsiteAudit

Image Compressor

Compress JPG, PNG, and WebP images in your browser. Reduce file size without visible quality loss. Convert to WebP for faster website load times. No upload, no sign-up — fully private.

Free · No sign-up · No data saved Works instantly in your browser.

Generate the link, copy it, and use it anywhere — website buttons, email signatures, social bios, or QR codes.

Image Compressor

Compress JPG, PNG, and WebP images in your browser. Reduce file size without visible quality loss. Convert to WebP for faster website load times. No upload, no sign-up — fully private.

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