# Bulk Image Upscaler > To upscale images in bulk on Kenerate AI, open Edit Studio → Batch edit, add up to 20 photos, choose Upscale 4K and press Run batch — Download all saves every result. The same panel also resizes, filters and adds a logo to a batch for free. New accounts get 25 free credits; there is no watermark and no monthly cap. URL: https://kenerateai.com/bulk-image-upscaler Publisher: Kenerate AI (https://kenerateai.com) Last updated: 26 September 2026 ## Key facts - Per batch: Up to 20 photos - Upscale 4K: Image Upscaler engine - Output: About 4096 px on a square photo - Also free in batch: Resize · Filter · Add logo ## Steps 1. Open Batch edit in Edit Studio — Go to kenerateai.com/app/edit and open Batch edit (in the Export tools). 2. Add up to 20 photos — Select up to 20 images at once from your computer or phone. 3. Choose Upscale 4K — Pick Upscale 4K — it uses the Image Upscaler engine for every photo in the batch. 4. Run the batch and download all — Press Run batch, wait for every photo to finish, then press Download all. Failed items can be run again. ## In depth ### Marketplace image sizes at a glance Every major marketplace sets a minimum and a size that lets shoppers zoom. From their own guidance: - Amazon — 500 to 10,000 px on the longest side; over 1,000 px is preferred so customers can zoom, and images should have no pixelation or jagged edges [1]. - Shopify — up to 5000 × 5000 px (25 MP) and under 20 MB; 2048 × 2048 px usually displays best for square images [2]. - eBay — at least one photo 500 px on the longest side, no added borders, text or watermarks [3]; about 1600 × 1600 px recommended, up to 24 photos of 12 MB each [4]. - Google Merchant Center — at least 500 × 500 px for all products from 31 January 2027, about 1500 × 1500 px or larger recommended, up to 64 MP and 16 MB [5]. ### Why a 4K batch covers all of them Supplier and catalogue photos often arrive at a few hundred pixels. Batch edit's Upscale 4K outputs about 4096 px on a square photo — above every recommendation in the list, so one run makes a catalogue ready for all four platforms. In our test four 320 px product shots came out at 4096 × 4096. ### Keep product photos faithful Upscaling for a listing should make a photo sharper, not different. Batch edit uses Image Upscaler, a faithful engine; Real-ESRGAN-style models are trained on blur, noise and JPEG damage so they clean up without redrawing the product [6]. Always check labels and logos at 100% before you publish — eBay, for example, doesn't allow added text anyway [3]. References: [1] Amazon Seller Forums — product image size guidance: https://sellercentral.amazon.com/seller-forums/discussions/t/4b3c4c39-6f8c-4312-aa0e-99982eb8f5e1 [2] Shopify Help — Product media types and sizes: https://help.shopify.com/en/manual/products/product-media/product-media-types [3] eBay — Picture policy: https://www.ebay.com/help/policies/listing-policies/picture-policy?id=4370 [4] eBay — Adding pictures to your listings: https://www.ebay.com/help/selling/listings/adding-pictures-listings?id=4148 [5] Google Merchant Center — Image link [image_link] requirements: https://support.google.com/merchants/answer/6324350 [6] Wang et al. — Real-ESRGAN (ICCV Workshops 2021): https://arxiv.org/abs/2107.10833 ## FAQ Q: How do I upscale multiple images at once? A: Open Edit Studio, choose Batch edit, add up to 20 photos, pick Upscale 4K and press Run batch. When they finish, press Download all. Q: How many images can I upscale at once? A: Up to 20 photos per batch. Run another batch for the next 20 — there is no monthly limit. Q: What resolution does the batch upscale to? A: 4K, using the Image Upscaler engine — the same engine as the 4K option in the single-image upscaler. Q: Can I resize or add a logo to many photos too? A: Yes. Batch edit also does Resize, Filter and Add logo for free, plus Remove BG in the same panel. Q: Can I use other engines in bulk? A: Batch uses Image Upscaler at 4K. For Real-ESRGAN, Clarity Pro, Phota Enhance or exact megapixel sizes, use the single-image upscaler — results are kept in your history. Q: Is there a free bulk image upscaler? A: Kenerate gives 25 free credits on sign-up to try a batch; bigger jobs use one-time credit packs that never expire. No watermark. ## Related pages - AI image upscaler: https://kenerateai.com/ai-image-upscaler - Upscale image: https://kenerateai.com/upscale-image - AI image enhancer: https://kenerateai.com/ai-image-enhancer - Upscale image to 4K: https://kenerateai.com/upscale-image-to-4k - Increase image resolution: https://kenerateai.com/increase-image-resolution - HD photo converter: https://kenerateai.com/hd-photo-converter - Unblur image: https://kenerateai.com/unblur-image - Sharpen image: https://kenerateai.com/sharpen-image - Unpixelate image: https://kenerateai.com/unpixelate-image - Photo restoration: https://kenerateai.com/photo-restoration - Uncensored image enhancer: https://kenerateai.com/enhance-ai - Enhance AI art: https://kenerateai.com/enhance-ai-art - Anime upscaler: https://kenerateai.com/anime-upscaler - Remove glare from photo: https://kenerateai.com/remove-glare-from-photo - Restore old photos: https://kenerateai.com/how-to-restore-old-photos - Best photo restoration software: https://kenerateai.com/best-photo-restoration-software - Denoise photos: https://kenerateai.com/how-to-denoise-photos - Increase image resolution: https://kenerateai.com/how-to-increase-resolution-of-an-image - Sharpen an image in Photoshop: https://kenerateai.com/how-to-sharpen-an-image-in-photoshop - All upscaler alternatives: https://kenerateai.com/image-upscaler-alternatives - Remini alternative: https://kenerateai.com/remini-alternative - Let's Enhance alternative: https://kenerateai.com/lets-enhance-alternative - upscale.media alternative: https://kenerateai.com/upscale-media-alternative - Upscayl online: https://kenerateai.com/upscayl-online - Bigjpg alternative: https://kenerateai.com/bigjpg-alternative - VanceAI alternative: https://kenerateai.com/vanceai-alternative - waifu2x alternative: https://kenerateai.com/waifu2x-alternative - Magnific AI alternative: https://kenerateai.com/magnific-ai-alternative - Topaz Labs alternative: https://kenerateai.com/alternatives/topazlabs-alternative ## Sources - Kenerate Edit Studio: https://kenerateai.com/app/edit - Batch processing — Wikipedia: https://en.wikipedia.org/wiki/Batch_processing