When applying for the RRB ALP (Railway Recruitment Board Assistant Loco Pilot) exam, applicants must pay close attention to the photograph and signature image specifications required during the online application process. In this guide, we explain the detailed criteria, introduce a converter tool to ensure your images meet the standards, and provide a sample Python tool to help automate the conversion process.
What are the RRB ALP Photo and Signature Requirement?
The RRB online application process demands that every candidate upload a properly formatted photograph and signature image. These files must adhere to stringent file size and resolution standards to ensure that the details remain clear and verifiable. Missing or improper image formats can lead to application delays or even rejections.
| Item | dimensions | size | Format | Other Requirements |
|---|---|---|---|---|
| Photo | 3.5 cm x 4.5 cm | 50 KB to 150 KB | JPEG/PNG | Recent, clear, front-facing, 80% face coverage |
| Signature | 3.5 cm x 2 cm | 30 KB and 49 KB | JPEG/PNG | Handwritten in black ink, clear and legible |
Photograph Specifications
Note: focus on dimensions in CM or mm ignore resoultion. increase DPI to increase size.
Format: JPG/JPEG
Original Requirement: Indian passport size (35mm width x 45mm height) 3.5cm width *4.5cm (just use passport size photo in 50-150KB)
Scanning Resolution: Minimum 150 DPI
Pixel Resolution: At least 240 pixels in width x 320 pixels in height
File Size: Between 50 KB and 150 KB
Signature Specifications
Format: JPG/JPEG
Scanning Resolution: Minimum 100 DPI
Pixel Resolution: At least 140 pixels in width x 60 pixels in height
Signature Area: The signature should be clearly visible and centered within a scan box measuring 35mm width x 20mm height or 3.5cm width *2cm height
File Size: Between 30 KB and 49 KB
3. SC/ST Certificate (Only for candidates requested for free passes for train travel): – The scan document should be
in the PDF format only with size below 400 KB only. The certificate should be legible, clear, LATEST & VALID on
the closing date of submission of online application.
Understanding these detailed requirements can be challenging, so having a converter tool specifically designed for the RRB ALP application process is invaluable.
Or drag and drop your image anywhere in this dotted area.
Drop your image here
Preview & Crop
Current Dimensions: N/A
Estimated Size (JPG): N/A
Select aspect ratio, adjust selection, then Apply Crop.
Resize Settings
Note: Exact size limiting during save requires advanced logic and is not strictly enforced here.
Output Format
Transform
Filters
Saved Image Preview
| Property | Original | Output |
|---|---|---|
| Width x Height | N/A | N/A |
| Format | N/A | N/A |
| File size | N/A | N/A |
| Quality | N/A | N/A |
Use https://imageresizer.sarkariresultz.in/
Upload image , crop or drag untill ideal image size.
save changes, right click on save image.
https://imageresizer.sarkariresultz.in/
https://tools.sarkariresultz.in/
RRB Assistant Loco Pilot ALP CEN 01/2025 Recruitment 2025 Apply Online for 9970
- Application Begin : 12/04/2025
- Last Date for Apply Online : 19/05/2025
- Last Date Pay Exam Fee : 21/05/2025
- Correction / Modified Form : 22-31 May 2025
Post Name | Total Post | Railway RRB ALP Eligibility 2025 | |||||||
Assistant Loco Pilot | 9970 |
| |||||||
important Links | |||||||||
Apply Online | |||||||||
Download Date Extended Notice | RRB ALP recruitment CEN 1/ 2025 | ||||||||
Why Use a Photo and Signature Converter Tool?
A dedicated converter tool enables applicants to:
Quickly validate the image dimensions and file sizes.
Convert scanned images to the required format with the correct resolution.
Ensure compliance with the specifications to avoid any hassle during the application process.
Automate parts of the process, reducing the chances of manual errors.
A tool designed for this purpose not only saves time but also enhances accuracy in preparing images that satisfy the official criteria.
How the Converter Tool Works
The “RRB ALP Photo and Signature Size Converter” tool works in the following way:
Image Upload: The user uploads the scanned photograph and signature image.
File Format Check: The tool verifies that images are in the JPG/JPEG format.
Resolution Verification:
For the photograph, it checks that the image resolution is at least 240 x 320 pixels and scanned at 150 DPI.
For the signature, it ensures a minimum resolution of 140 x 60 pixels and that the full signature is centered in a defined scan box.
File Size Adjustment:
The photograph file size should be between 50 KB and 150 KB.
The signature image must fall between 30 KB and 49 KB.
Output: The tool processes the images to meet the specifications and provides a ready-to-upload file.
indian passport size photograph (35mm width
x 45mm height) It should be JPG/JPEG format scanned with minimum 150 DPI resolution and size of the
photograph should be between (50-150 KB). resolution (minimum of 240pixels in width x 320pixels in Height), Signature:
Image should be in JPG/JPEG format with size of file between 30 to 49 KB. The image is obtained by scanning with
minimum of 100 DPI resolution. The uploaded signature image should have proper resolution (Minimum of 140
pixels in width x 60 pixels in height) and complete image of signature should be visible and be available in the centre
of the scan box (size of 35mm width x 20mm height) of online application.