What Is the Advanced Image Optimizer?
Compress and convert images with side-by-side quality comparison. Support for WebP, JPEG, and PNG. See file size savings in real time. This tool runs 100% in your browser — your data never leaves your device. No signup, no account, completely free.
How to Use This Tool
Drop an image onto the tool. Choose your output format (JPEG, WebP, or PNG). Drag the quality slider to find the sweet spot between file size and visual quality. The side-by-side comparison shows exactly what you're trading. Download the optimized image.
Tips and Best Practices
- → WebP at quality 80 usually matches JPEG at quality 90 — try it for 30%+ file size savings.
- → Use the magnifier to inspect fine details in the before/after comparison.
- → For photographs, JPEG/WebP at 75-85 quality is usually indistinguishable from the original.
- → For images with text or sharp edges, PNG preserves crispness better than lossy formats.
Related tools
- Before you optimize, the File Size Estimator predicts the on-disk size of an export from pixel dimensions, format, and quality — useful for picking a target before the encode.
Frequently Asked Questions
How is this different from the Image Compressor?+
This tool adds side-by-side before/after comparison, format conversion (JPEG, WebP, PNG), and a quality slider with real-time file size preview. The Image Compressor is simpler — drag-and-drop with automatic compression.
Does WebP work in all browsers?+
Yes — WebP is supported in all modern browsers including Chrome, Firefox, Safari, and Edge. It typically produces 25-35% smaller files than JPEG at equivalent quality.
Are my images uploaded to a server?+
No — all processing happens in your browser using the Canvas API. Your images never leave your device.
How is this different from a regular image compressor?+
It adds a side-by-side before/after view, a quality slider with the resulting file size shown as you move it, and conversion between JPEG, WebP and PNG for one image at a time. It does not do per-region quality, AVIF or JPEG XL output.
Which format gives the best file size?+
Of the formats this tool writes, WebP is usually smallest for photos; in our own 38-photo test, WebP at quality 75 averaged about 26% smaller than JPEG at 75. AVIF can go smaller still, but this tool does not output it. JPEG remains the safest fallback for universal compatibility.
Will my colour profile be preserved?+
No. The image is re-encoded through the browser canvas, which converts it to sRGB and drops any embedded ICC profile (Display P3, Adobe RGB and so on). Wide-gamut photos can look slightly less saturated as a result; for print or colour-managed work, keep the original file.
Can I batch-optimise different formats together?+
No, it handles one image at a time so you can judge the quality side by side. For many images at once, use the Image Compressor, which takes multiple files and saves them as one ZIP.
Does optimisation affect EXIF data?+
It removes all of it. The image is re-encoded through the browser canvas, which drops EXIF (including GPS location and capture date), IPTC and XMP data and any embedded colour profile, so the output is plain sRGB. Keep the original if you need that metadata.
Built by Derek Giordano · Part of Ultimate Design Tools
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Side-by-side preview shows the optimized image next to the original at the exact final byte size, so you can stop guessing where the quality cliff lives for your specific photo. WebP, JPEG, and PNG outputs run through wasm-encoded codecs (mozjpeg, libwebp, oxipng) in the browser — no upload, no server round-trip — which is faster than uploading to TinyPNG or Squoosh-API for a single image and doesn't count against any free-tier quota.