Select Or Drag & Drop Your Signature Here
Supported formats: JPG, PNG, GIF, BMP
Tip: Crop image to maintain aspect ratio and focus on your signature
🚂 RRB Signature Resizer
Resize your signature to meet Railway Recruitment Board requirements: 3.5cm × 2cm, 30-49 KB, JPG format
How to Resize Your Signature to 3.5cm × 2cm
Using our RRB signature resizer tool is straightforward. Here's how you can create a perfect signature for Railway Recruitment Board applications in just a few seconds:
- Upload Your Signature: Start by selecting your signature image. You can upload it directly from your device or drag and drop it into the upload area.
- Crop If Needed: Before resizing, you have the option to crop your signature. This is particularly useful if you want to focus on a specific part of the image and maintain the proper aspect ratio.
- Set Dimensions & DPI: By default, the tool sets the width and height to 3.5cm × 2cm as required by RRB. The default DPI is set to 200, ensuring high-quality output suitable for railway applications.
- Resize and Download: Click the "Resize Image" button, and within seconds, your signature will be resized to meet RRB requirements. You can then download the compliant signature file.
Key Features
Perfect for RRB Applications
Railway Recruitment Board portals require signature images sized at 3.5cm × 2cm. Our tool is designed to meet these specifications exactly.
User-Friendly Interface
The tool is designed to be simple and intuitive, ensuring a smooth experience even for those who aren't tech-savvy.
Fast and Efficient
The entire process from uploading to downloading your resized signature takes just a few seconds.
High-Quality Output
The default 200 DPI setting ensures your resized signatures are of high quality, suitable for professional railway applications.
Compliance Checking
Automatically verifies that your signature meets all RRB requirements including file size (30-49 KB), dimensions, and DPI.
Privacy and Security
We prioritize your privacy. All processing is done locally in your browser, ensuring your signature images remain secure.
RRB Signature Size Calculation Table (3.5cm × 2cm)
Understanding the relationship between DPI (Dots Per Inch) and pixel dimensions is crucial for creating compliant RRB signatures. The table below shows exact pixel dimensions and estimated file size ranges for different DPI settings:
⚠️ Important Note About File Sizes:
The estimated JPEG sizes in this table are based on typical signature images with varying complexity. Your actual file size may be significantly different depending on:
- Image complexity: Simple signatures (few strokes, solid colors) = smaller files
- Background noise: Clean white backgrounds compress better than textured/colored backgrounds
- JPEG quality settings: Our tool uses optimized compression for RRB compliance
- Image content: Handwritten signatures compress differently than printed text or logos
Example: A simple black signature on white background might be only 10-15 KB at 200 DPI, while a complex signature with multiple colors could be 30-45 KB.
| DPI | Width (pixels) | Height (pixels) | Total Pixels | Est. JPEG Size Range | RRB Compliance |
|---|---|---|---|---|---|
| 96 DPI | 132 px | 75 px | 9,900 | 8-20 KB Simple: 8-12 KB Complex: 15-20 KB |
❌ Too Small |
| 200 DPI | 276 px | 157 px | 43,332 | 10-45 KB Simple: 10-18 KB Complex: 25-45 KB |
✅ Perfect |
| 300 DPI | 413 px | 236 px | 97,468 | 25-80 KB Simple: 25-40 KB Complex: 50-80 KB |
⚠️ May Be Too Large |
| 600 DPI | 827 px | 472 px | 390,344 | 100-300 KB Simple: 100-150 KB Complex: 200-300 KB |
❌ Way Too Large |
💡 Pro Tips for RRB Signatures:
- 200 DPI is Optimal: Provides the perfect balance between quality and file size for RRB requirements.
- Target 30-49 KB: RRB specifically requires signature files to be between 30-49 KB in size.
- Minimum 140×60 pixels: Ensure your signature meets the minimum resolution requirements.
- JPEG Format: Always save as JPG/JPEG format as required by RRB portals.
- White Background: Ensure your signature has a clean white background for best results.