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60% Smaller Files
Compress images without losing quality. Perfect for web.
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Image Editor Preview
Crop, compress, and convert images instantly. Fast, private, and completely free. No account required.
Image Editor Preview
Trusted by designers, developers, and content creators
All the tools you need to optimize images for any purpose
Compress images without losing quality. Perfect for web.
Convert between WebP, AVIF, JPEG, and PNG instantly.
Interactive cropping with preset aspect ratios.
100% client-side. No uploads, no servers, no waiting.
Drag the handle to compare the original PNG versus the optimized WebP — same visual quality, dramatically smaller file size, and faster page load speed.
Drag the handle left or right to compare · Touch-enabled · No upload required
Whether you're a designer, developer, or marketer
Optimize product images for faster loading and better conversions.
Create perfectly formatted images for Instagram, TikTok, and more.
Batch process images and generate modern formats for responsive design.
Choosing the right next-gen image format is critical to reduce page load speed, improve Core Web Vitals, and achieve perfect Google Lighthouse scores. Here's the definitive comparison.
JPEG compression reduces file size while preserving photographic color fidelity. Universally supported but superseded by next-gen image formats for web performance.
Best Used For
Photographs, complex color gradients, social media exports, legacy platform compatibility
Compression Efficiency
~70% avg.Quality Loss Level
Lossy — subtle artifacts at high compression ratios above 85%
Lighthouse Score Impact
72PNG lossless image compression preserves every pixel exactly. Essential for graphics requiring transparency layers, but file sizes are far too large for most photographic web content.
Best Used For
UI icons, logos, screenshots, transparency layers, pixel-perfect graphics
Compression Efficiency
~30% avg.Quality Loss Level
Lossless — zero quality degradation, perfect pixel-for-pixel accuracy
Lighthouse Score Impact
55Convert to WebP to reduce page load speed and improve Core Web Vitals. This next-gen image format delivers dramatically smaller files while maintaining visual quality indistinguishable from JPEG.
Best Used For
Web images, ecommerce product photos, banners — supported in all modern browsers
Compression Efficiency
~85% avg.Quality Loss Level
Lossy or lossless — superior quality at 25–35% smaller size than JPEG
Lighthouse Score Impact
93AVIF next-gen format delivers the smallest file size of any web image format. Optimal for achieving perfect Google Lighthouse scores and minimizing Largest Contentful Paint (LCP) on content-heavy pages.
Best Used For
High-performance sites, Lighthouse 100 targets, HDR images, large hero photography
Compression Efficiency
~92% avg.Quality Loss Level
Lossy with HDR support — smallest file size with exceptional perceptual quality
Lighthouse Score Impact
99In-depth answers about image optimization, next-gen formats, web performance, and privacy.
AVIF (AV1 Image File Format) is the most advanced next-gen image format available today. Compared to JPEG, AVIF achieves 70–90% smaller file sizeswith equivalent or superior visual quality. Even against WebP — Google's own next-gen format — AVIF delivers roughly 20–50% better compression efficiency.
For web performance, this translates directly into faster Largest Contentful Paint (LCP) scores, lower bandwidth consumption, and measurably improved Google Lighthouse performance metrics. If your audience uses modern browsers (Chrome 85+, Firefox 93+, Safari 16+), AVIF should be your default export format for photographic content.
That said, WebP remains an excellent universal fallback with near-total browser support, while JPEG is still optimal for platforms that haven't adopted next-gen image formats.
Absolutely not— and this is a core architectural guarantee, not just a privacy policy claim. wsotoolz.com is built entirely on client-side JavaScript using the browser's native Canvas API. Every operation — cropping, compressing, format conversion, resizing — runs exclusively inside your local browser tab.
Your images are never uploaded to any server, never transmitted over the network, and never stored in any database or cloud service. When you close the browser tab, every trace of your image is immediately cleared from memory by the browser's garbage collector.
You can verify this yourself: open your browser's DevTools Network tab and process an image — you will see zero image upload requests. This makes wsotoolz.com safe for personal photos, confidential business graphics, medical images, and any other sensitive visual data.
Image optimization is one of the highest-leverage SEO improvements for ecommerce stores. Here's the direct impact:
Recommended workflow: export all product images at 80–85% quality in WebP for maximum browser compatibility, with AVIF as a progressive enhancement for modern browsers.
The optimal compression quality setting balances visual fidelity with file size reduction. Evidence-based recommendations by format:
WebP (photographs)
Achieves 70–80% size reduction vs JPEG with near-imperceptible quality loss
AVIF (photographs)
Achieves 80–92% size reduction; lower settings are perceptually equivalent due to AVIF's superior codec
PNG / WebP Lossless (UI & icons)
No quality loss — use palette optimization and stripping metadata for ~25% size reduction
General rule: Start at 80% quality and reduce in 5% increments until you notice artifacts at 2× browser zoom. For most photographic content, 75–85% WebP qualityis the sweet spot that satisfies both user perception and Google's “Efficiently encode images” Lighthouse audit.
Ready to optimize? Try wsotoolz.com free — no account, no server upload, 100% private.