Loading page...
Merge passport photo and signature scan for Indian Railway RRB NTPC and Group D online application form uploads.
RRB NTPC, Group D, ALP, and RPF online applications require a passport photo under 40 KB and a signature scan under 20 KB, uploaded as separate JPEG files within precise pixel boundaries. Get both sized and export-ready in one place.
Railway RRB Official Upload Rules (NTPC / Group D / ALP)
| Parameter | Photograph Specs | Signature Specs |
|---|---|---|
| Dimensions | 320×240 px (or 35×45 mm) | 140 × 60 px |
| File Size Bounds | 20 KB – 50 KB | 30 KB – 50 KB (or 10–20 KB) |
| Format & Background | JPG / JPEG · Plain light/white background | JPG / JPEG · Black ink on white paper |
| Rejection Traps | Caps/sunglasses prohibited, face covers 50-70% | Must be in running handwriting, NOT capital letters |
How to Use
Select your official passport-size photograph and scanned signature image.
Position photo and signature inside required portal dimensions with automatic KB capping.
Download the merged photo card formatted specifically for government online application portals.
Railway Recruitment Board (RRB) online forms require a clear passport photo with light background strictly under 40 KB, and a black ink signature on unlined white paper strictly under 20 KB in JPEG format.
Depending on your specific RRB notification (NTPC, Group D, ALP, or RPF), the tool gives you both options: separate auto-compressed JPEG files under 40 KB & 20 KB, or a merged examination card.
Yes! Our integrated background whitening erases paper shadows and boosts black ink contrast so your signature meets Railway automated verification size and clarity rules.
Most people confuse DPI with resolution. This guide explains the real relationship between DPI and pixels, why changing DPI metadata doesn't add detail, and when 300 DPI genuinely matters.
How client-side Optical Character Recognition (OCR) processes document images using WebAssembly and Tesseract. Learn the pipeline of binarization, baseline fitting, and font recognition.