Bulk Image Resizer (Batch Resize Photos to KB & Pixels)
Batch resize and compress multiple JPG, PNG, and WEBP photos simultaneously to target file sizes in KB or custom pixel dimensions with one-click ZIP.
Batch Resize Photos Online Free
Upload multiple photos to scale dimensions or compress file sizes under 20KB/50KB with multi-threaded HTML5 Canvas processing and 100% in-browser privacy.
Open Bulk Resizer ToolQuick answer
Resizing dozens of product catalog images or student passport photos individually takes hours of manual labor.
This batch resizer uses client-side multi-threaded Canvas resampling to compress and resize images 100% inside browser memory.
Why batch resize with Photocopywala?
Multi-mode, ZIP output, and private.
Target KB & Pixel Modes
Resize by exact pixels (W x H), percentage scale, or target KB limits (under 50KB).
One-Click ZIP Export
Automatically packages all processed images into a clean, uncompressed ZIP archive.
100% In-Browser Privacy
Your photos stay strictly local inside browser memory. Zero server uploads.
Batch Resizing Capabilities
Supported batch resizing modes:
| Resizing Mode | Supported Controls | Output Format | Primary Application |
|---|---|---|---|
| Batch Pixel Scaling (W x H) | Custom Width & Height in Pixels | ZIP Archive Batch Export | E-Commerce Products & Websites |
| Batch Target File Size (KB) | Max 20KB / 50KB / 100KB Limit | ZIP Archive Batch Export | Government Exam Applications |
Locking aspect ratio prevents image stretching and distortion when converting landscape photos into fixed square thumbnail dimensions.
How to batch resize photos online
Follow these 3 easy steps:
Step 1 - Upload Multiple Photos
Drag and drop up to 100 JPG, PNG, or WEBP images.
Step 2 - Set Resizing Mode & Target Size
Choose Pixel Dimensions, Percentage Scaling, or Target File Size in KB.
Step 3 - Download Resized ZIP Archive
Click Download Resized ZIP to save all scaled photos in one click.
Strict Private Local Image Execution
All processing happens locally in your browser - your files are never sent to any server.
- Zero Cloud Transmissions: Image resampling and ZIP packaging execute 100% locally in browser JavaScript.
- No File Retention: Images are purged when you close or reload the browser tab.
- No Watermarks: Export clean, original-quality resized photos.
Best practices for batch photo management
Tips for photo optimization:
Batch Rename Files
Rename photo batches sequentially using our Bulk File Renamer tool.
Brighten Dark Photos
Fix dark shadows using our Brightness Contrast Adjuster tool.
Remove Photo Background
Cut out portrait backgrounds using our Photo Background Remover tool.
Format Passport Photos
Format official passport photos using our Passport Photo Maker tool.
Frequently Asked Questions
Answers to common queries about batch resizing photos online.
Can I batch resize multiple photos to exact file size limits in KB (e.g. under 50KB)?
Yes. Select 'Target KB Limit' mode, enter your target file size (e.g. 20KB or 50KB), and the batch engine auto-compresses all photos to fit under the threshold.
What image formats can I batch resize?
Supports batch processing for JPG, JPEG, PNG, WEBP, and BMP image files.
Can I batch resize photos by percentage scaling or fixed dimensions?
Yes. Choose between Percentage Scaling (e.g. 50% scale reduction), Exact Pixels (Width x Height), or Fixed Aspect Ratio locking.
How are resized batch images downloaded?
All resized photos are automatically compiled into a single downloadable ZIP archive file.
Are my personal photos uploaded to remote servers?
No. All multi-threaded Canvas resampling and compression execute 100% locally inside client browser memory using client-side JavaScript.
Is this online tool free to use and do you store my uploaded documents?
Yes, this tool is 100% free with unlimited usage. All document rendering, calculation, and image processing run locally in your web browser memory with zero file storage on external servers.
Conversion Step
Need help preparing this file?
If your photo, signature, PDF, or document is still not accepted on a portal, contact us. We can help prepare the final file online.
We do not ask for OTP, passwords, Aadhaar login, MPOnline login or any government portal credentials.