Complete Photographic, Signature & Biometric Guidelines for Indian Recruitment Portals
Every year, millions of candidates apply for competitive government examinations across India. However, examination bodies report that over 15% to 20% of online applications face rejection or provisional withholding due to incorrect photographic dimensions, blurry signatures, mismatched file sizes, or poorly captured left thumb impressions.
Government recruitment servers use automated validation scripts. If an uploaded signature is 20.2 KB on a portal that enforces a 20.0 KB ceiling, the server rejects the upload with an obscure error. Our Government Exam Image Resizer features exact iterative compression algorithms that clamp output files within the precise allowable window (e.g. strictly 11 KB to 19 KB for SSC signatures).
Recruitment Commission Document Specification Matrix (2026)
| Commission | Document Type | Dimensions (cm / px) | File Weight (KB) | Format |
|---|---|---|---|---|
| SSC (CGL, CHSL, JE, GD) | Photograph | 3.5 × 4.5 cm (413 × 531 px) | 20 KB – 50 KB | JPEG / JPG |
| Signature | 6.0 × 2.0 cm (4.0 × 2.0 cm) | 10 KB – 20 KB | JPEG / JPG | |
| Left Thumb Impression | 3.5 × 1.5 cm / 4.0 × 2.0 cm | 10 KB – 20 KB | JPEG / JPG | |
| Railway RRB (ALP, NTPC, JE) | Photograph | 35 × 45 mm (300 DPI) | 30 KB – 70 KB | JPEG / JPG |
| Signature | 60 × 20 mm / 50 × 20 mm | 10 KB – 40 KB | JPEG / JPG | |
| Left Thumb Impression | 35 × 35 mm (Square) | 10 KB – 40 KB | JPEG / JPG | |
| India Post GDS | Photograph | 200 × 230 Pixels | Up to 50 KB | JPEG / JPG |
| Signature | 140 × 60 Pixels | Up to 20 KB | JPEG / JPG | |
| Left Thumb Impression | 140 × 140 Pixels | Up to 20 KB | JPEG / JPG |
How to Resize and Compress Exam Documents (Step-by-Step)
Select Commission & Document
Choose whether you are applying for SSC, RRB, India Post GDS, or a custom examination, then select Photo, Signature, or Left Thumb Impression.
Clean Shadows & Enhance Ink
When uploading smartphone photos of signatures or thumbprints on paper, turn on Shadow Cleaner & Ink Booster to turn grey paper pure white.
1-Click Compliant Download
Click Download. The image is instantly clamped within the exact allowable KB range and saved as a pristine, high-resolution JPEG ready for direct upload.