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.
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?+
Beyond simple compression, the optimizer offers per-region quality (higher detail on faces, more aggressive on backgrounds), modern format selection (AVIF, WebP, JPEG XL when supported), and metadata-aware processing that preserves colour profiles for print.
Which format gives the best file size?+
For most photos, AVIF wins (typically 50% smaller than JPEG at equivalent quality), followed by WebP (~30% smaller). JPEG remains the safest fallback for universal compatibility. The tool shows side-by-side size comparisons.
Will my colour profile be preserved?+
Yes by default — ICC profiles for sRGB, Display P3, and Adobe RGB are embedded in the output. Strip them via the "convert to sRGB" toggle if your destination is web-only (saves a few KB).
Can I batch-optimise different formats together?+
Yes. The tool detects each file’s source format and applies appropriate optimisation. Mixed JPEG/PNG/WebP batches export to a single zip with each file’s optimised output.
Does optimisation affect EXIF data?+
Toggleable. The default preserves capture-date and copyright fields while stripping GPS coordinates and camera serial numbers — sensible for sharing photos online. Full strip and full preserve are both available.
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.