RRB Railway Photo & Signature Resizer
Railway Recruitment Board applications — NTPC, Group D, ALP and technician posts — specify a 35 × 45 mm colour photograph and a 50 × 20 mm signature, both between 30 KB and 70 KB. The lower bound trips up most candidates, because a heavily compressed phone photo often arrives well under 30 KB and the portal refuses it. This page pre-loads the RRB specification and the bracket engine deliberately raises the JPEG quality until the file is at least 30 KB while staying below 70 KB. RRB also requires the photograph to be recent, in colour, front-facing and without a cap or dark glasses. Every step runs inside your own browser using the Canvas API and Web Workers — no upload, no server, no account.
Drop images or a PDF to scan
Up to 30 pages · huge 108MP photos are auto-downscaled to keep your browser stable
Output & compression
Resize any photo to exact size & KB
Passport photos, signatures, thumb impressions — never stretched, never uploaded.
Smart Fit & Center is always on: photos of any shape are cropped or letterboxed, never stretched or squashed.
Dimensions
Fitting & cleanup
Output
- Resolution
- 413 × 531 px
- Format · DPI
- JPG · 300
- KB bracket
- 20 – 50 KB
- File size
- —
Frequently asked questions
35 × 45 mm at 300 DPI is roughly 413 × 531 pixels; the readout updates as you change the DPI.