Image Resizer
Best app to Change the dimensions of your images online free
Upload Images
JPG, PNG, WEBP supported.
Resize Multiple Images – Fast Batch Resizer for Any Size
You need to resize 20 product images for your online store. Instagram requires specific dimensions but resizing one by one takes hours. Your graphics need exact pixel measurements but desktop software is expensive. Whether you're resizing a single image for social media, resizing multiple images for websites, or batch processing photos for print materials, with this free Image Resizer tool you can resize multiple images instantly. It handles batch processing with presets for all major platforms, supports measurements in pixels, inches, and centimeters, and works directly in your browser without installation or sign-up.
Key Features
100% Free
No hidden charges, no daily limits, no premium versions
Browser-Based
Files Process locally on your device, never upload to servers
Social Media Presets
Built-in dimensions for Instagram, Facebook, Twitter, YouTube, TikTok, LinkedIn
No Sign-Up
Use immediately without creating an account
Multiple Measurement Units
Resize in pixels, inches, centimeters, or use presets
Formats Supported
Works with JPG, PNG, WEBP images
Batch Image Resizer
Process dozens of images at once
How to Use Image Resizer
Step 1: Upload Your Images
Click the upload area and select images in JPG, PNG, or WEBP format. Upload single or multiple images for batch processing. The tool supports resizing one image or dozens simultaneously, making it flexible for any project size.
Step 2: Choose Resize Dimensions
Click Continue to Editor to open the editor in full-screen mode. Select your measurement unit from Pixels, Centimeters, or Inches. Use social media presets for instant sizing – Instagram Square (1080x1080), Instagram Portrait (1080x1350), Instagram Story (1080x1920), Facebook Post (1200x630), Twitter Post (1200x675), YouTube Thumbnail (1280x720), LinkedIn Post (1200x627), TikTok Video (1080x1920), and more. Or enter custom width and height values.
Step 3: Fine Tune Your Settings
Enable "Lock Aspect Ratio" to prevent distortion and maintain proportions automatically. View the original dimensions display showing current image size. The tool processes images in their original format (JPG stays JPG, PNG stays PNG, WEBP stays WEBP) to preserve quality.
Step 4: Resize and Download
Click the resize button to process all selected images instantly. Download your resized images immediately in their original format, ready to use on websites, social media, print projects, or email.
Why Use This Tool?
Unlike desktop software like Photoshop requiring expensive licenses and installation, this bulk image resizer works instantly in any browser without downloading anything. Unlike many alternatives that impose daily caps, require accounts, or add surprise fees, this tool has no limits, no cost, and no setup.
Desktop applications and many online services process images on their servers, storing files temporarily and creating privacy risks. The tool runs entirely within your browser on your own device, images never leave your browser or computer. Complete privacy protection without tracking or data collection, which matters for business materials, personal photos, and sensitive content.
When you need to resize image in cm or adjust pixel dimensions, most tools take 10-30 seconds per image. This batch image resizer handles multiple images in just seconds, making processing large collections practical instead of time-consuming. Speed means productivity.
This Image Resizer tool works universally. Whether you need to resize image pixels online for websites, resize image in inches for print projects, or use this as your image resizer app for mobile and desktop, one tool handles everything. Support for multiple measurement units means no conversions needed
Common Use Cases
E-Commerce and Product Photography
Online stores need consistent product image sizes. Amazon, Shopify, and other platforms require specific dimensions. Resizing 100 product photos individually takes hours, but this bulk image resizer processes all simultaneously to exact specifications. Single product images resize instantly for quick uploads. Merchants handling multiple product listings save significant time with batch processing.
Social Media Content Creation
Instagram requires 1080x1350px for feed posts, 1080x1920px for stories, 500x500px for profile pictures. Facebook has different optimal sizes for different placements. Twitter, LinkedIn, and TikTok each specify unique dimensions. Built-in presets handle these automatically. Whether resizing a single image for your profile or dozens for a content calendar, this tool creates multiple versions from originals instantly while maintaining aspect ratios.
Graphic Design and Print Projects
Print materials require specific dimensions in inches or centimeters. A 4x6 inch photo print needs exact pixel conversion. Brochures, flyers, and postcards each have standard sizes. Designers using image resize centimeters measurements can work directly in required units without manual calculations. Batch resizing multiple design elements saves hours. Single images resize perfectly for quick projects.
Website Optimization and Speed
Websites load faster with appropriately sized images. Hero images often need 1920px width, featured images 800px, thumbnails 300px. Resizing entire image galleries one by one is inefficient. This batch resizer reduces hosting costs and improves site performance by processing galleries instantly. Single images resize instantly for quick website updates. Works for WordPress sites, custom websites, and e-commerce platforms.
Educational and Presentation Materials
Teachers preparing lesson materials need images resized to presentation slide dimensions. Students creating project presentations need consistent image sizes. Resize image dimensions to fit 16:9 or 4:3 aspect ratios instantly. Whether resizing one image for a slide or dozens for a presentation, batch processing helps educators prepare material collections quickly.
Small Business Marketing
Small businesses need product images for catalogs, email campaigns, and social media posts. GST invoice attachments, business proposals, and marketing materials all require specific sizes. Resizing in bulk saves time for large campaigns while single-image resizing handles quick updates. Built-in social media presets ensure images display perfectly on every platform.
Technical Details
How This Image Resizer Works
This tool uses advanced client-side algorithms that intelligently resize images while maintaining quality. Built-in social media presets provide instant dimensions for Instagram, Facebook, Twitter, YouTube, LinkedIn, and TikTok – no manual calculations needed. For custom dimensions in pixels, inches (72 DPI or 300 DPI for print), or centimeters, the tool converts automatically. Lock Aspect Ratio prevents distortion by automatically calculating proportional dimensions. Images preserve their original format – JPG stays JPG, PNG stays PNG – maintaining quality and compatibility. Batch processing applies dimensions to all images simultaneously, significantly reducing total time.
Privacy and Security
All processing is handled locally on your device, not on external servers. No file uploads to servers, no data storage on databases, no tracking of any kind. Complies with GDPR (Europe), CCPA (California), and India's DPDPA. Images never leave your browser, are never stored, and are removed automatically when you close the page. Complete data privacy protection.
Browser Compatibility
Works on Chrome, Edge, Firefox, Safari and all modern browsers. Compatible with Android phones, iPhones, iPads, tablets, and Chromebooks. The tool functions offline once the page loads – important for users in rural areas or with unreliable internet. Internet speed doesn't affect processing since everything happens on your device.
Measurement Units and Format Support
JPG works for photographs on all systems worldwide. PNG preserves detail for graphics with transparency. WEBP is Google's modern format ideal for websites. Pixels are standard for web and social media. Inches are standard for US print (300 DPI for professional quality). Centimeters are standard for international and metric countries. Social media presets eliminate manual dimension lookups.
Tips and Best Practices
Tip 1: Use Social Media Presets for Instant Sizing
Instagram, Facebook, Twitter, LinkedIn, TikTok, and YouTube have different optimal image sizes. Instead of remembering or looking up dimensions, this tool has built-in presets. One click sets Instagram Portrait to 1080x1350px or TikTok Video to 1080x1920px. Perfect for single image posts or batch resizing content calendars. No guesswork, no manual calculations needed.
Tip 2: Understand Measurement Units for Your Project
For web images and social media, use pixels (px) as your measurement. For print projects in the USA, use inches (in) at 300 DPI for professional quality. For international or metric-system countries, use centimeters (cm). When image cm resize is needed, the tool converts automatically without confusion.
Tip 3: Maintain Aspect Ratios to Prevent Distortion
When resize image dimensions, maintaining aspect ratio prevents distortion and stretching. Enable "Lock Aspect Ratio" and the tool automatically calculates proportional dimensions. This is critical for product photos, profile pictures, and professional images where distortion is unacceptable.
Tip 4: Batch Processing Saves Hours
Upload 10, 50, or 100 images at once. Apply identical dimensions to all or customize individually. The bulk image resizer processes all simultaneously in seconds. Perfect for e-commerce sites with hundreds of products, photographers processing shoots, or content creators with large collections. Single images resize instantly for quick one-off needs.
Tip 5: Format Preservation Maintains Quality
Images stay in their original format (JPG remains JPG, PNG remains PNG, WEBP remains WEBP). This preserves compatibility with all platforms and maintains quality without unnecessary conversions.
Frequently Asked Questions
1. How do I resize an image?
Upload your image and enter desired dimensions in pixels, inches, or centimeters. Use social media presets for instant sizing or enter custom dimensions. Enable "Lock Aspect Ratio" to prevent distortion. Click resize to process. Download your resized image instantly. For batch processing, upload multiple images and apply settings to all at once.
2. Can I resize image for Instagram without cropping?
Yes, this tool prevents cropping while resizing. Use the aspect ratio lock feature to maintain proportions. Instagram accepts various dimensions – enter 1080x1350px for feed posts, 1080x1920px for stories, or 500x500px for profile pictures. The tool automatically calculates proportional dimensions preventing distortion or cropping.
3. How do I resize image in inches?
Select "Inches" from the measurement unit dropdown. Enter width and height in inches. For print projects, specify 300 DPI for professional quality or 72 DPI for screen display. The tool automatically converts inches to pixels. Works for standard print sizes like 4x6, 8x10, or custom dimensions.
4. Can I resize image pixels online free?
Yes, completely free. This tool resize image pixels online instantly at no cost. No sign-up, no daily limits, no premium versions. Resize single or multiple images. Download immediately.
5. How do I do image cm resize for international projects?
Select "Centimeters" from the measurement unit dropdown. Enter width and height in centimeters. The tool automatically converts to pixels. Ideal for international print projects, metric-system countries, and anyone working with centimeter measurements. This image resize centimeters feature eliminates manual conversion. Whether you need standard cm resize operations or custom dimensions, the tool handles metric measurements perfectly.
6. How do I resize image dimensions while keeping aspect ratio?
Enable "Maintain Aspect Ratio" option. Enter width or height – the tool automatically calculates the other dimension. This prevents distortion and stretching. Essential for product photos, profile pictures, and professional images. Customizable for each image in batch mode.
7. Can I resize multiple images at once?
Yes, upload all images simultaneously. This bulk image resizer processes all at once in seconds. Apply identical dimensions to all or adjust each separately. Perfect for photographers, e-commerce sites, and anyone managing large collections. Saves hours versus processing individually.
8. Do I need separate software to resize images?
No, this tool works completely in your browser. No software installation, no subscriptions, no complicated programs. Works as a free image resizer app for all devices – computers, phones, tablets, and any device with a web browser. Just upload, enter dimensions, and resize instantly.
Resize multiple images or single images instantly with our free, fast, private online tool. Whether you need to resize image pixels online, bulk image resizer for large collections, image cm resize for international standards, image resize centimeters for print projects, or quick single-image resizing for social media, this tool delivers instantly. Built-in social media presets save time. No installation, no sign-up, no limits, no charges – just upload, resize, and download. Works everywhere you need it, every time you need it, completely free.