Resize & convert
entire catalogues instantly.

How it works

1. Drop your images. Drag and drop up to 50 product photos into the batch editor. Supports JPEG, PNG, WebP, and HEIC. Each file appears in a queue with a live thumbnail preview.

2. Choose your settings. Pick an output format (JPEG, PNG, or WebP), set the target quality, and optionally add a watermark text overlay. Select a marketplace preset to auto-set the exact dimensions Amazon, Shopify, Etsy, or eBay requires.

3. Process and download. Click Process All. Every image is resized, compressed, and watermarked in sequence using your device's GPU. Download all results as a single ZIP file when processing completes.

Understanding the three resize modes

Fit inside is the safest mode. Your image is scaled down until it fits within the target dimensions while preserving the exact aspect ratio. If your photo is 3:4 and your target is square, you'll get a square canvas with the photo centred and white space on two sides. No cropping. No distortion. Use this when the exact pixel count is less important than keeping the full image intact — useful for document photos, portraits, and anything where you can't lose the edges.

Fill & crop is what most e-commerce sellers actually want. The image is scaled up until it fills the entire target canvas with no white borders, and anything that overflows is cropped from the centre. A landscape photo becomes a clean square with the main subject centred. This produces the most professional-looking product grid on any marketplace, and it's the mode to use for Amazon, Etsy, and Shopify where square images look most polished.

Exact stretches or squishes the image to fill the precise target size without preserving the aspect ratio. Only use this when you know your source images are already close to the right ratio, or when the platform requires strictly exact pixel counts regardless of distortion.

Why product images get suppressed on Amazon

Wrong background colour on the main image. Amazon's main product image must have a pure white background — RGB 255, 255, 255. Off-white or cream tones fail the automated check. Product too small in the frame. Amazon requires the product to fill at least 85% of the image. The Fill & crop mode helps by removing excess canvas automatically. Image below minimum resolution. Amazon requires at least 1000 pixels on the shortest side to enable zoom. The recommended size for the zoom feature is 1600×1600 — select "Amazon Zoom" in the preset chips above. Wrong format. Amazon accepts JPEG, PNG, TIFF, and GIF. JPEG is preferred: the file sizes are dramatically smaller at equivalent quality, which matters when uploading dozens of images per listing.

How this protects your product catalogue

Most free batch image resizers upload your photos to a cloud server. For an unreleased product catalogue — new packaging designs, prototypes, seasonal collections — uploading to a third-party server is a genuine confidentiality risk. PixelFix Pro batch-processes all images locally using OffscreenCanvas, which runs on your device's GPU thread. The images are loaded into browser memory, resized, and written directly to a ZIP file without a single byte leaving your network. Disconnect from the internet after loading the page and the batch editor still works perfectly.