Bulk Image Resizer & Padder
Batch resize, crop, and pad product photos to uniform dimensions for eBay, Amazon, Etsy, and web stores directly in your browser.
0 Photos Selected
Total Size: 0 MB
Resizing Batch Images...
Executing local in-browser transformation...
Batch Complete: 0 Photos Processed
Ready for individual or consolidated ZIP archive download
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Fit diverse aspect ratio photos into uniform 1600×1600 or 2000×2000 square canvases with clean borders. Comply with eBay, Amazon, Etsy, and Google Shopping high-resolution zoom requirements without awkwardly cropping or stretching product borders.
All image decoding, aspect ratio scaling, padding rasterisation, and ZIP file compilation occur directly within your web browser memory. Your unreleased inventory and proprietary product images never touch an external server or remote queue.
How to Batch Resize and Pad Product Photos
- Select Image Batch: Drag and drop your JPG, PNG, WebP, or AVIF files into the upload zone or paste directly from clipboard using Ctrl + V.
- Choose Preset or Custom Size: Click a marketplace preset button (e.g. 1600×1600 eBay/Amazon) or input your custom pixel dimensions.
- Configure Fitting & Padding: Choose Fit & Pad Canvas to preserve original framing with custom background borders, or switch to Cover & Crop to fill the frame completely.
- Export Single or ZIP: Click Process Batch Now. When ready, download images individually or click Download All (.ZIP) for single-archive export.
High-Performance Browser Architecture
BWTools uses high-speed HTML5 2D Canvas contexts with bicubic smoothing algorithms (imageSmoothingQuality = 'high') to resample images without blurriness or compression artifacts.
Asynchronous processing loops yield execution cycles back to the browser's UI thread via animation frames, preventing tab freezing during intensive batches. Archive creation executes entirely through client-side JSZip binary stream compression without third-party dependencies.
Marketplace Format & Sizing Specifications
| Platform / Preset | Optimal Dimensions | Format | Fitting Method | Zoom Compliance |
|---|---|---|---|---|
| eBay Marketplace | 1600 × 1600 px | JPEG / WebP | Fit & Pad (White #fff) | 100% Zoom Capable |
| Amazon Standard | 1600 × 1600 px | JPEG | Fit & Pad (White #fff) | 100% Zoom Capable |
| Etsy & Shopify | 2000 × 2000 px | JPEG / WebP / PNG | Fit & Pad or Cover | High-Res Zoom |
| Instagram & Social | 1080 × 1080 px | JPEG / WebP | Fit & Pad / Crop | Standard Feed |
Frequently Asked Questions
What does the "Fit & Pad Canvas" option do?
Fit & Pad scales your entire photograph to fit inside your target dimensions without cutting off any edges. If your image is rectangular, it creates uniform border margins (customisable to pure white or custom colour) to output a square photo without distortion.
Are there batch file size limits?
Because processing runs on your local computer or smartphone hardware rather than a shared server, there are no artificial limits. You can comfortably process dozens of high-resolution photos at once.
Does resizing reduce image quality?
No, our resizer uses high-fidelity bicubic interpolation. You can also manually adjust the export quality slider up to 100% or select PNG format for lossless results.