batch image resizer
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JPG, PNG, WEBP – unlimited
All processing local
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From Large Originals to Perfectly Sized Images
Original Images (Large Size)
Resized Images (Smaller, Web‑Ready)
⚡ Batch image resizer – exact dimensions, percentage scaling, or presets. All client‑side, no upload.
Bulk Resize – Exact Dimensions or Percentage
Upload dozens of images at once and resize them all with a single click. Choose between exact pixel dimensions or scale by percentage – ideal for social media, websites, or email attachments.
📏 Exact Dimensions (WxH)
Set a fixed width and height in pixels. Maintain aspect ratio to avoid distortion – perfect for Instagram posts, thumbnails, or product images.
📊 Scale by Percentage
Reduce or enlarge images by a percentage (1‑200%). Slide to 50% to halve the size, or 200% to double it – all images scale proportionally.
⚡ One‑Click Presets
Quickly apply common sizes: 1920x1080 (HD), 1280x720 (720p), 1080x1080 (square), 150x150 (thumbnail) and more.
🔒 100% Client‑Side, No Upload
Your images never leave your device – all processing happens in your browser. No servers, no privacy risks.
How to Resize Multiple Images Online – Batch & Free
Need a free batch image resizer that works with exact dimensions or percentage? Follow these simple steps:
1. Upload Images
Drag & drop multiple JPG, PNG, or WEBP files – unlimited number, no size limits.
2. Choose Resize Method
Pick "Exact Dimensions" to set pixel size, or "Percentage" to scale up/down. Toggle "Maintain aspect ratio" if needed.
3. Apply Resize
Click "Apply resize" – all images are processed simultaneously in your browser. Watch progress bars update.
4. Download
Save resized images individually or get a ZIP archive with all files. No watermarks, no signup.
Why Choose Our Batch Image Resizer?
- Batch image resizer – Resize multiple images at once, saving hours of manual work.
- Resize multiple images online – No software installation, works directly in your browser.
- Resize image to exact dimensions online – Perfect for social media, product photos, or print.
- Resize image by percentage online – Scale up or down proportionally with a simple slider.
- Free batch image resizer online – No limits, no watermarks, no signup. Forever free.
🎯 Perfect For
Instagram Posts
Resize to 1080x1080E‑commerce
Uniform product imagesEmail Attachments
Reduce file sizeBatch Processing
Convert entire folders100% Client‑Side, No Upload
Your images never leave your device – absolute privacy. Perfect for sensitive photos.
🎨 Resize Options – Exact, Percentage & Presets
📐 Exact Dimensions
Enter width and height in pixels. Enable "Maintain aspect ratio" to keep proportions – the other dimension auto‑adjusts.
📊 Percentage Scaling
Scale all images by a percentage (1% to 200%). 50% halves the size, 200% doubles it – perfect for batch uniform scaling.
⚡ Quick Presets
One‑click buttons for common sizes: 1920x1080 (HD), 1280x720 (720p), 1080x1080 (Square), 150x150 (Thumbnail), and more.
Frequently Asked Questions
How to resize multiple images online at once?
Upload all images, choose your target dimensions or percentage, and click apply. All images are resized simultaneously – no need to process one by one.
Can I resize an image to exact dimensions?
Yes. Switch to 'Exact (WxH)' mode and enter the width and height in pixels. You can also maintain aspect ratio to avoid stretching.
How to resize an image by percentage?
Select 'Percentage' mode and adjust the slider from 1% to 200%. The image will be scaled up or down accordingly while preserving proportions.
Is there a free batch image resizer online?
Yes, our tool is completely free. No signup, no watermarks, no file limits. All processing happens in your browser.
Will my images lose quality?
Resizing to smaller dimensions reduces file size and may slightly affect detail, but we use high‑quality interpolation (bilinear) to preserve sharpness. For enlarging, quality may degrade – we recommend starting with high‑resolution originals.
Can I download all resized images as a ZIP?
Yes. After resizing, click the "Download all as ZIP" button. A single archive containing all your resized images will be created instantly.
How We Compare to Other Image Resizers
| Feature | InstantConvert | Other Free Tools |
|---|---|---|
| Batch processing (multiple images) | ✅ Yes, unlimited | ❌ Usually single only |
| Exact dimensions + percentage | ✅ Both | ⚠️ One or the other |
| Maintain aspect ratio | ✅ Yes | ⚠️ Often missing |
| Client‑side (no upload) | ✅ 100% | ❌ Server upload |
| ZIP download | ✅ Yes | ❌ Individual only |
✨ Only InstantConvert gives you true batch processing with exact/percentage modes – all private and free.