Free Batch Image Processor — Multi-Photo Tool | InkStu
Batch compress, convert, crop and watermark dozens of photos in one click — all in your browser. No upload, no signup, photos never leave your device. Privacy protected.
1. Select Image
Click or drag images here (processed locally, never uploaded)
2. Settings & Process
3. Preview & Download
Results will appear here.
How to Use the Batch Processing Tool
Batch processing applies operations like compression, conversion, cropping, and watermarking to a whole set of images at once, dramatically improving efficiency. InkStu's batch processing tool runs entirely in your browser — your images are never uploaded, ensuring privacy. This tool lets you select multiple images at once (Ctrl/Cmd multi-select or drag in a batch), apply uniform processing parameters (e.g., compress all to a set quality, convert all to WebP, crop all to an ID photo spec, or add a uniform shop watermark to all), and preview or package-download the results. Whether you're an e-commerce seller batch-processing product images, a content creator batch-compressing illustrations, an HR team batch-cropping employee ID photos, or a designer batch-converting assets, this tool handles it quickly. No registration or software install — open the page and batch-process on your phone or desktop. Since processing is local, speed depends on device performance and image count; we recommend keeping batches under 50 images for a smooth experience.
Batch Processing FAQ
How many images can I process at once?
We recommend keeping a batch under 50 images for a smooth experience. Since processing happens locally in the browser, device memory limits apply — too many images may cause lag or crashes. For larger sets, process in multiple batches.
Which batch operations are supported?
Batch compression (uniform quality or target size), batch format conversion (uniform target format), batch cropping (uniform ratio or spec), and batch watermarking (uniform text and position). Choose an operation type and set uniform parameters as needed.
Is there a file size limit?
We recommend each image under 20MB and a total batch under 200MB (browser memory limits). Very large files or batches may fail on low-end devices — consider splitting into smaller batches or reducing individual image size first.
Can I download the results as a package?
Yes. After batch processing, you can download all processed images as a single ZIP file, or preview and download them one by one. Package download greatly improves efficiency for large batches.
Can each image have different parameters?
This tool applies uniform parameters to the whole batch for efficiency. To set individual parameters per image, use the corresponding single-image tool (Compress, Convert, Crop, Watermark) one at a time.
Are images uploaded to a server?
No. All batch processing happens locally in your browser. Your image data never leaves your device, ensuring full privacy. The process works completely offline once the page is loaded.