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Upload your images
Drag & drop or select multiple images from your device.
JPG、PNG、WebP画像を品質を失わずに一括圧縮。
Reduce image size by up to 80% while keeping perfect quality. Process multiple images in your browser. No uploads, no waiting, no limits.
Our smart compression removes unnecessary data while keeping your images sharp and clear.
Drag & drop or select multiple images from your device.
Pick the compression level and output format you prefer.
Get all your optimised images instantly as a ZIP file.
Speed up product pages and increase conversions. Ready for PrestaShop, WooCommerce and Shopify.
Improve Core Web Vitals and boost your Google rankings.
Deliver faster content and better user experience.
Optimise images for Instagram, Facebook, LinkedIn & more.
All popular image formats are supported so you can work with any file, any time.
We reduce file size while keeping images visually sharp. You can adjust the compression level depending on whether you prefer smaller files or higher quality.
You can compress JPG, JPEG, PNG, WebP and GIF images directly in your browser.
Many images can be reduced by 50% to 80%, depending on the original format, dimensions and selected quality level.
All image processing happens locally in your browser using the Canvas API. Your files are never sent to any server.
Yes. Since your images never leave your device, your private files stay completely under your control at all times.
Yes. You can compress up to 10 images per batch for free. The Pro plan (4.99€/month) unlocks unlimited batches.
Yes. Our tool works as a bulk image compressor and lets you download all optimised files together as a ZIP.
We focus on privacy, speed and e-commerce workflows. Your images stay in your browser — no uploads, no plugins, no friction.
All processing happens 100% inside your browser using the Canvas API. We never upload, store or track your files. Your privacy is safe — unlimited and always protected.
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 imgflow.
The key to effective image compression is finding the right balance between file size and visual quality. imgflow 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 imgflow) 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.