1
Drop your images
Drag and drop or browse. JPG, PNG, WebP, GIF — any size.
Use Zovex as a private bulk image compressor for your product photos — directly in your browser. No uploads, no watermarks, no signup. Optimized for Shopify, WooCommerce, PrestaShop, Amazon, eBay and Etsy.
Use Zovex as a private bulk image compressor for your product photos — directly in your browser. No uploads, no watermarks, no signup. Optimized for Shopify, WooCommerce, PrestaShop, Amazon, eBay and Etsy.
Our smart compression removes unnecessary data while keeping your images sharp and clear.
Drag and drop or browse. JPG, PNG, WebP, GIF — any size.
Pick a quality preset or fine-tune. Convert to WebP if you want smaller files.
Get the entire batch instantly. Already named, ready to upload to your store.
Speed up product pages and lift conversions. Ready for Shopify, WooCommerce, PrestaShop and Magento — sized right out of the box.
Improve Core Web Vitals (LCP, CLS, INP) and stop losing positions to faster competitors.
Deliver content faster, reduce hosting costs, and offer a better mobile reading experience without thinking about it.
Optimize images for Instagram, Facebook, LinkedIn and Pinterest. Right format, right weight, right ratio.
All popular image formats are supported so you can work with any file, any time.
Yes — compressed images load faster, which improves Core Web Vitals (especially LCP). Faster pages tend to perform better in search and convert more visitors. The key is using a compressor that doesn't degrade visible quality.
Typically 70–85% smaller without visible quality loss. A 4 MB phone photo usually compresses to 400–700 KB at 80% quality. WebP can push that further to 200–400 KB.
Shopify recommends 2048 × 2048 px maximum. Compress to under 200 KB before upload — Shopify's CDN serves resized versions but can't fix bloated source files.
WebP is typically 25–35% smaller than JPG at the same quality, with browser support over 97% globally. Use WebP for your own store. Stick with JPG for marketplace listings or systems that may not accept WebP.
Yes. Drop your batch into Zovex (10 free, unlimited on Pro), download as ZIP, and upload to Shopify normally. No third-party server, no upload step.
Shopify resizes and serves WebP through its CDN, but doesn't aggressively compress source files. Pre-compressing before upload reduces bandwidth and gives you faster pages.
Not with Zovex. Compression happens 100% in your browser using the Canvas API. Files never touch our servers.
80–85% is the sweet spot for product photos. Below 75% you may see artifacts on smooth gradients. Above 90% file sizes balloon without visible improvement.
Yes. Zovex compresses JPG, PNG, WebP and GIF. PNG is best kept lossless for logos and icons with transparency, but you can also convert PNGs to WebP for much smaller files when transparency is needed.
Lossy removes imperceptible data and produces 5–10× smaller files. Lossless preserves every pixel but only achieves 20–40% reduction. Use lossy for product photos, lossless for logos and icons.
Three things: 100% browser-based (your files don't leave your device), built specifically for ecommerce with platform-specific presets, and no upload bottleneck means you can process large batches as fast as your CPU allows.
All compression happens 100% in your browser using the Canvas API. We never upload, store, or analyze your files.
Page speed is one of Google's top ranking factors — and images are responsible for over 50% of a web page's total weight. A slow store doesn't just hurt your SEO rankings. It kills conversions before they happen.
Research from Google shows that 53% of mobile users abandon a page that takes more than 3 seconds to load. For every additional second of load time, conversion rates drop by up to 7%. If you're running a PrestaShop, WooCommerce or Shopify store with hundreds of product images, unoptimised files are costing you money every single day.
Image compression is the single most impactful technical SEO improvement available to most e-commerce stores — and it costs nothing to implement with Zovex.
The key to effective image compression is finding the right balance between file size and visual quality. Zovex uses smart lossy compression that removes invisible data from your images — data the human eye cannot detect at normal viewing distances.
For most product images, a quality setting between 75% and 85% achieves the optimal balance: files that are 60–80% smaller than the original, with no visible quality difference on any screen size.
Drag and drop up to 10 images (free plan) or unlimited (Pro). JPG, PNG, WebP and GIF are all supported. No file size limits.
Use the quality slider to choose between maximum compression (smallest file) and maximum quality (sharpest image). The live preview updates instantly — showing exact KB before and after.
Process your entire batch in seconds. All compressed images are packaged in a ZIP file — ready to upload directly to PrestaShop, WooCommerce, Shopify or any other platform.
Every e-commerce platform has its own recommended image sizes and quality thresholds. Here are the settings we recommend for the most popular platforms:
Combining compression with format conversion to WebP will achieve the best results on modern platforms. WebP files are typically 25–35% smaller than equivalent JPG files at the same visual quality.
Google's Core Web Vitals are a set of page experience signals that directly influence search rankings. Two of the three Core Web Vitals are directly impacted by image optimisation:
LCP measures how long it takes for the largest visible element on the page to load. On most product pages, this is the main product image. Compressing your hero image is the fastest way to improve your LCP score — and therefore your rankings.
When images load slowly or without defined dimensions, they cause the page layout to shift as they appear — a poor experience that Google penalises. Properly sized and compressed images load faster and reduce layout shifts.
Heavy pages with large uncompressed images take longer to become interactive. Reducing image weight directly improves your store's responsiveness score.
Lossy compression (used by Zovex) removes some image data to achieve smaller file sizes — typically reducing files by 60–80% with no visible quality difference at 75–85% quality settings. This is the industry standard for e-commerce product images.
Lossless compression reduces file size without removing any data, achieving more modest reductions (typically 10–30%). This is appropriate for images that require pixel-perfect accuracy — icons, logos with flat colours, and technical diagrams.
For the vast majority of product photography, lossy compression at 75–85% quality is the right choice. Your customers cannot tell the difference, Google cannot tell the difference, but your page speed scores absolutely can.