Free Image Resizer Online – Resize JPG, PNG & WebP Photos
Online Image Resizer – Resize Image by Pixels, Dimensions & KB
Free, fast, and secure tool to change image resolution, reduce dimensions, or scale photos with zero quality loss.
Click to upload or drag and drop your photo
Supports JPG, JPEG, PNG, WEBP (Fast In-Browser Processing)
Free Online Photo Resizer – Adjust Width, Height, and File Size in Seconds
Are you looking for an easy and reliable way to resize images online? Whether you need to adjust photo dimensions for strict online portal uploads, resize a passport photo to 3.5 × 4.5 cm, or optimize banners for social media, our MB to KB Image Resizer makes it fast, accurate, and completely free.
Unlike traditional tools that require software installation or upload your personal images to cloud servers, MBtoKBConverter.org processes everything right inside your web browser. This ensures that your confidential documents, ID cards, and private pictures remain 100% secure.
Resize by Pixels & Dimensions
Set custom width and height in pixels (px), centimeters (cm), or inches (in). Keep the aspect ratio locked to prevent photo stretching or distortion.
Reduce File Size (MB to KB)
Changing image dimensions is the most effective way to shrink file size. If you need exact KB limits, check our dedicated 100KB Image Compressor or 20KB Photo Compressor.
Passport & Exam Presets
Instantly resize photos and signatures for competitive exams (SSC, UPSC, TNPSC, Banking) and Visa applications with one click.
Multiple Format Support
Seamlessly convert and save your resized pictures as JPEG/JPG, PNG, or high-performance Google WebP format.
How to Resize an Image Online (Step-by-Step)
Upload Your Image
Drag and drop your JPG, PNG, or WebP photo into the upload box above or click “Select Image”.
Choose Resize Mode & Enter Dimensions
Select By Dimensions to enter custom width/height, By Percentage to scale down proportionally, or choose a preset like Passport Size.
Select Output Format & Quality
Pick your preferred file format (JPG, PNG, WEBP) and adjust the quality slider to balance visual clarity and file size.
Click ‘Resize Image Now’ & Download
Preview the before and after dimensions, check the final file size in KB, and click the download button.
Explore More Free Image & PDF Optimization Tools
Check out our full suite of free browser-based productivity tools:
Frequently Asked Questions (FAQ)
Always maintain the original aspect ratio by keeping the Lock Ratio button active. Our tool uses high-quality bicubic interpolation filters to ensure clean edges, vibrant colors, and sharp text when scaling images down.
The most common international passport photo size is 3.5 cm × 4.5 cm (or 413 × 531 pixels at 300 DPI) with a file size between 20KB and 50KB. You can select this directly from our Presets tab.
Yes! Scaling down the pixel dimensions (e.g., from 4000×3000 to 1200×900) drastically reduces the total number of pixels, bringing file sizes from 5MB–10MB down to under 200KB easily.
No. All processing happens 100% locally in your web browser memory. Your files are never uploaded to any server or cloud database, guaranteeing complete security and privacy.
