JPG · PNG · WebP · AVIF · GIF · BMP
Up to 100 images, max 20 MB eachOn-device processing · No cookies · GIF: first frame onlyNo images in the queue yet.
Start with a preset for WooCommerce, Shopify, Amazon, TikTok Shop or your website. Set the format, quality and size for a product-image batch before uploading. Images stay on your device and are processed without uploading their contents.
Based on my years in ecommerce, I recommend starting with 800–1000px product images for everyday display, balancing visible detail with smaller files and faster loading. Platform presets therefore fit images within 1000 × 1000px while preserving proportions. You can change the size at any time; use larger images when close-up detail is needed.
Presets start with Balanced quality. The longest-edge limit scales down without cropping or enlarging small images. Presets do not guarantee listing approval. How presets are chosen
Handle thumbnails and detail images in separate batches when they need different sizes. Each batch shares settings while every image keeps its proportions.
Compare file size, lettering and product texture. Download the finished images or a ZIP, then upload them to your platform.
Compare real files, in both appearance and size.
96.5%Smaller in this example
Consider quality and size together. Reduction varies by image; review your own results.
1254 × 1254 px → 1000 × 1000 px · WebP output · Balanced · quality 82 · Longest-edge limit 1000px · no upscaling
Measured 2026-10-20; source scaled down to 1000 × 1000px without cropping.
View the original sampleImages are processed without uploading the originals, and results are created as new files. The queue is temporary, so download what you need before leaving or refreshing.
Warning: refreshing clears all files in the current queue!Unsaved results will also be lost. Download them first. Original files on your device are unaffected.
Keep product details clear while reducing the wait to browse, add to cart and buy.
−90%
For example, reducing a 1 MB image to 100 KB cuts its size by about 90%. The browser has fewer bytes to download, which can reduce image loading time.
Google image performance guide · 90% is an illustration; actual reduction varies by image.
+8.4%
A Google-commissioned study by Deloitte and 55 observed an 8.4% relative increase in retail conversion rates when four speed metrics improved by 0.1 seconds on every page of the mobile shopping journey.
Milliseconds Make Millions, 2020 · 37 brand sites and over 30 million sessions.
A 90% smaller image does not mean a 90% faster page or a fixed conversion gain per second. The study measured site-wide speed improvements, not image compression alone. Check the published page and your store data to measure the benefit.
Yes. Each preset sets an editable output format, quality mode and longest-edge limit. It is a starting point for image preparation, not a guarantee that the images meet every publishing requirement.
No. The tool processes files on your device and does not connect to your store. Download the results, then upload or replace the images yourself.
No. A longest-edge limit only scales larger images down while keeping their proportions. It does not crop, add padding or enlarge small images. Prepare square compositions separately.
Normal mode generates results first. Then choose Download image or Download ZIP. A download request does not confirm a file is on disk; check your browser's download list. Authorized folder writes show Saved after completion.
Writing to a folder needs browser support and your permission. Use browser downloads when folder access is unavailable. Original files are not overwritten.
The queue lives in the current page session. Download the results before leaving; after a refresh, import the images again.
No. Results use new filenames. Authorized folder writes also avoid replacing existing files with the same name.
Add up to 100 images, at most 20 MB each. JPG, PNG, WebP, AVIF, GIF and BMP are supported; GIF uses the first frame only. Batch settings are shared while each image keeps its proportions.
The tool uses format, quality and dimensions rather than a fixed byte target. Adjust settings based on the result; reduction varies between images.
WebP supports photos and transparency, making it a practical starting point for web assets. Other upload services may restrict formats; choose JPG or PNG when required.
Google WebP documentationImages are processed in your browser without uploading their contents to SellerImg. There are no analytics cookies; anonymous usage counts do not include image contents or filenames.
Image processing and ZIP export are free. No account or subscription is needed.
