Online Image Resizer (Custom Dimensions)
Resize photos to exact pixel width and height with optional aspect ratio lock.
Drag and drop your file here, or Select File
Supports JPG, PNG, WebP up to 25MB
How to Use This Tool
Select or Paste
Drop your file or paste your data directly into the tool. Everything remains strictly within your browser.
Customize & Adjust
Choose your target size, dimension, format, or parameters. The algorithm calculates the result in milliseconds.
Instant Download
Save your finished file or copy the processed result directly to your device with zero waiting time.
Pixel-Perfect Image Resizing for Web and Social Media
Web platforms, blogs, and social networks require specific pixel dimensions for headers, avatars, and thumbnails. Our client-side resizer scales images smoothly with bicubic interpolation right in your browser.
Biometric Standards & Digital Image Quantization Guidelines
Government portals, exam boards, and consulates enforce strict file size thresholds (20KB, 50KB, 100KB) and biometric ratios to automate identity verification.
Our client-side processing engine utilizes HTML5 Canvas 2D contexts to perform binary-search JPEG quantization. This minimizes payload byte count while preserving high-contrast facial features and clean edges.
For official passport and visa submissions, ensure uniform lighting across both cheeks, a plain off-white background, and an uncompressed neutral expression complying with ICAO Document 9303 standards.
Technical Specifications & Standards
| Supported Inputs | JPEG, PNG, WEBP, SVG |
| Color Space | Standard sRGB IEC61966-2.1 |
| Compression Method | Binary search quantization matrix |
| Biometric Compliance | ICAO 9303 & ISO/IEC 19794-5 |
| Execution Environment | In-Browser Canvas 2D Sandbox |
| Data Confidentiality | Ephemeral volatile RAM (Zero upload) |
Frequently Asked Questions (FAQ)
Can I lock the aspect ratio? ▼
Yes! Check "Lock Aspect Ratio" and changing the width will automatically adjust the height proportionally.