Online Passport Photo Resizer & Compressor
Crop and resize passport photos to standard 3.5cm × 4.5cm dimensions and compress file size to required KB.
Strict 100% In-Browser Binary Compression
Tested on 50+ official Indian exam engines (SSC, UPSC, IBPS, NTA, Passport Seva). Zero server upload, zero data collection.
Official passport and visa applications require precise pixel aspect ratios (e.g., 3.5cm × 4.5cm or 350 × 450 pixels) alongside strict KB limits (20KB - 50KB). With our interactive Drag & Position Crop frame, you can frame headshots perfectly and output compliant photos.
How to Online Passport Photo Resizer & Compressor
- 1Upload your portrait selfie or scanned photo.
- 2Click 'Adjust Crop & Frame Position' to center your head and shoulders inside the passport frame.
- 3Select target file size (e.g. 50 KB or 20 KB).
- 4Download your official passport photo.
Target Specifications
Official Portal Upload Criteria Comparison
| Exam / Portal Name | Photo Limit | Signature Limit | Dimensions | Required Format |
|---|---|---|---|---|
| SSC (CGL/CHSL/MTS) | 20 KB - 50 KB | 10 KB - 20 KB | 3.5 x 4.5 cm | JPG / JPEG |
| UPSC Civil Services | 20 KB - 300 KB | 20 KB - 300 KB | 350x350 px min | JPG / JPEG |
| IBPS Bank Exams | 20 KB - 50 KB | 10 KB - 20 KB | 200x230 px | JPG (Black Ink) |
| NEET / JEE (NTA) | 10 KB - 200 KB | 4 KB - 30 KB | 4x6 Postcard | JPG / JPEG |
How Client-Side Image Binary Compression Works Under the Hood
When you select a target size (e.g., 20KB or 50KB), ResizeInKB executes an in-browser binary search algorithm using the HTML5 HTMLCanvasElement.toBlob() API. It dynamically adjusts JPEG quantization matrices and pixel dimensions directly inside your browser's V8 JavaScript engine memory. Because no HTTP requests send image data across the network, your processing is instant, works offline, and keeps your private photos completely secure.