Magic B&W Signature Background Cleaner
Convert phone photo signatures on paper into high-contrast black ink on pure white background. Applies real-time pixel luminance thresholding (L = 0.299R + 0.587G + 0.114B) to eliminate paper shadows, yellow tone, and background noise.
Indian Govt Exam Photo & Signature Specifications (2026-27)
| Recruitment Portal | Target Size (KB) | Dimensions | Name & Date? | Background |
|---|---|---|---|---|
| SSC (CGL, CHSL, MTS, GD) | 20 KB – 50 KB | 3.5 × 4.5 cm (100×120 px) | Yes (Mandatory) | White / Light |
| UPSC Civil Services (OTR) | 20 KB – 300 KB | 350 × 350 px (Square 1:1) | Recommended | White / Plain |
| Bank (IBPS, SBI, RRB) Signature | 10 KB – 20 KB | 140 × 60 px (2:1 Ratio) | No | Pure White Ink |
| NTA NEET UG Passport & Postcard | 10 KB – 200 KB | Passport & 4×6 inch Postcard | Yes (DOP Stamp) | White Background |
| Railway RRB (ALP, Tech, NTPC) | 30 KB – 70 KB | 35 × 45 mm | Optional | White / Plain |
How to Use Online Signature Cleanup Resizer Online
- 1Upload phone photo of signature on paper.
- 2Toggle Magic B&W enhancement.
- 3Download clean high-contrast signature.
Official Requirements: Online Signature Cleanup
Applies real-time pixel luminance thresholding (L = 0.299R + 0.587G + 0.114B) to eliminate paper shadows, yellow tone, and background noise.
- Black ink on pure white background.
Always verify the latest requirements on the official application website before final submission. Last verified: Verified September 2026.
Pro Tips to Prevent Form Rejection
- Avoid shadows across signature when taking phone photo.
Frequently Asked Questions (FAQ)
How to make phone photo signature clean white background?▼
Upload phone photo of signature, enable Magic B&W cleanup toggle, and download crisp black ink on pure white background.
Popular Government Exam & Sarkari Recruitment Portals
FileZenith’s binary-search compression engine is calibrated to the official photograph and signature submission guidelines of all major central and state government examinations:
SSC CGL, CHSL, MTS, CPO SI, GD Constable, Stenographer Grade C & D, Selection Posts (3.5×4.5 cm, 20–50 KB with Name & Date DOP).
UPSC IAS, IPS, IFS, NDA, CDS, CAPF (AC), IES, and OTR One-Time Registration (350×350 px, 20–300 KB).
IBPS PO, IBPS Clerk, IBPS RRB Scale I/II/III, SBI PO, SBI Clerk, RBI Grade B, LIC AAO (Photo 20–50 KB, Signature 10–20 KB).
RRB NTPC, RRB Group D, RRB ALP, Technician, Delhi Police, UP Police SI, Bihar Police (30–70 KB, white background).
Related Govt Exam & ID Tools
View All Govt Tools →Online Signature Cleanup Quick Specs
Official Application Portals
All image compression, dimension cropping, and name stamping occur purely inside your browser memory using HTML5 Canvas. Your biometric photos never touch our servers.