Bulk product image resizer
Resize, pad, compress and rename product images in one local batch.
Export a consistent image batch
Fit images within maximum dimensions or pad to an identical canvas, preserving aspect ratio without enlargement. Choose JPEG, PNG or WebP, inspect exported previews and download individual files or a ZIP. PNG is lossless; the quality setting controls JPEG and WebP.
Resize product photos in bulk
Online stores look more professional when every product photo has the same size and framing. This bulk image resizer takes a batch of PNG, JPEG or WebP photos, resizes them without distortion, optionally pads them onto an identical canvas, and exports consistently named files you can download one by one or as a single ZIP. All processing happens in your browser, so supplier photos and unreleased products never leave your computer.
- Add photos. Up to 20 images per batch, 20 MB each, 80 MB total, and up to 24 megapixels per image.
- Set dimensions. Enter the maximum width and height (or the exact canvas size when padding).
- Pick a mode. Fit inside scales each photo to fit within the box and keeps its own aspect ratio. Pad to canvas produces images of exactly the size you entered, filling the remaining space with your background color or transparency.
- Export. Choose WebP, JPEG or PNG, a quality between 0.1 and 1, and a filename prefix such as
product. Files are numbered in order.
Marketplace image requirements
- Amazon: according to Amazon's product image guidelines, main images need a pure white background (RGB 255, 255, 255), the product should fill 85% or more of the frame, and images should be 1,000 pixels or larger on the longest side to enable zoom. JPEG is the preferred format.
- Shopify: Shopify's image size guide recommends 2048 × 2048 pixel square product images and notes that zoom needs images larger than 800 × 800 pixels. Shopify accepts images up to 5000 × 5000 pixels and 20 MB.
- Your own site: 1200 × 1200 (the default here) in WebP at quality 0.8 is a good balance between sharpness and page speed.
Requirements change, and categories such as clothing or jewelry can have extra rules, so always confirm on the platform's own help pages.
White background vs transparent
JPEG does not support transparency, so padding is always filled with your chosen color. For PNG and WebP you can choose transparent padding — useful for images placed on colored website sections — or a solid color for marketplaces that demand white. Note that this tool pads around your photo; if the photo itself has a grey or cluttered background, remove it in a photo editor first.
Getting the smallest files
File size drops with smaller dimensions and lower quality. Start with WebP or JPEG at 0.8, open the preview at full size and only go lower if the result still looks clean. PNG is lossless, so the quality slider has no effect and files can be larger than the original JPEG. Animated images export as a single still frame.
Preparing a product video as well? Use the Instagram video compressor or compress MP4. For printed catalogs, run your images through the print DPI checker.
Frequently asked questions
What size should product images be?
It depends on the marketplace. Amazon asks for images of at least 1,000 pixels on the longest side so zoom works, and Shopify recommends 2048 × 2048 pixel square product images. Check the current requirements of your platform before exporting.
How do I put a product photo on a white background?
Choose Pad to canvas, keep the background color at #ffffff and export JPEG (or set PNG/WebP padding to Use background color). The product is centered on a white canvas of the exact size you entered. The tool does not remove an existing background; it pads around the photo.
Will the tool enlarge small images?
No. Images are never upscaled, because enlarging cannot add real detail. Small originals stay at their size and are centered when padding.
Which format should I export?
WebP gives the smallest files for websites; JPEG is the most compatible and is preferred by Amazon; PNG is lossless and supports transparency but is larger. Quality applies only to JPEG and WebP.
Are my images uploaded?
No. Decoding, resizing and ZIP creation all happen in your browser.
Is metadata kept?
Browser exports usually drop EXIF metadata and color profiles. Check color-critical artwork separately.
Related tools
- Video Compressor — Shrink MP4, MOV and WebM files for Discord, email and WhatsApp.
- SRT & VTT Subtitle Checker — Find overlaps, bad timestamps, long lines and fast reading speeds.
- Image DPI & Print Checker — Check real PPI, transparency and margins before printing.