Signature Resizer 10 to 20KB (Online Form Specialist)
Resize, clean, and crop signature scans to 10KB–20KB for government job portals (SSC, IBPS, SBI, Railway RRB). Most Indian recruitment portals (SSC CGL, CHSL, IBPS PO/Clerk, SBI, RRB NTPC, State PSCs) reject uploaded signatures if the file size exceeds 20KB, falls below 10KB, or has dark paper shadows. Our client-side studio crops, cleans background noise with Magic B&W thresholding, and binary-searches JPEG quality to hit 10–20KB safely.
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 Govt Job & Bank Portals Resizer Online
- 1Sign with a black or dark blue ink pen on clean white paper.
- 2Take a clear photograph or mobile scan of your signature without heavy shadows.
- 3Upload the file above and toggle Magic B&W to clean paper grain and force background to pure white.
- 4Adjust target size slider between 10KB and 20KB (recommended: 18 KB).
- 5Click Download to save your verified 10–20KB JPEG file ready for upload.
Official Requirements: Govt Job & Bank Portals
Official recruitment portal standards (SSC, IBPS, UPSC, State PSCs) require signatures to be signed on white paper with black/blue pen, cropped neatly without border shadows, and weighted strictly between 10KB and 20KB in JPEG/JPG format.
- File size must strictly remain between 10 KB and 20 KB.
- Dimensions: 2:1 rectangle aspect ratio (400×200 pixels or 140×60 pixels).
- Signatures in capital letters, red ink, or on ruled paper are rejected by exam portals.
- Clear high contrast between pen ink and 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
- Use good lighting when photographing signatures on mobile to avoid shadows.
- Toggle Magic B&W to eliminate paper shadows, yellow tint, and mobile camera noise.
- Do not upload cropped images of signatures from lined notebook paper.
Frequently Asked Questions (FAQ)
Why does online job portal reject my signature upload?▼
Government portals like SSC, IBPS, and SBI reject signatures if the file size exceeds 20KB, falls below 10KB, or has low contrast with gray/yellow paper backgrounds. Our tool uses binary search compression and B&W enhancement to fix all three issues.
What is Magic B&W Signature Cleanup?▼
Our Magic B&W mode thresholding converts shadows, mobile photo yellow tint, and paper grain into pure white while forcing pen ink to crisp high-contrast black.
What are the official pixel dimensions for signature in online applications?▼
Most portals specify 140 × 60 pixels or a 2:1 aspect ratio (e.g. 400 × 200 pixels). Our tool locks the aspect ratio so your signature never stretches or distorts.
Can I use blue ink pen or is black ink mandatory?▼
SSC and IBPS officially recommend black ink pen for maximum optical scanning contrast. However, dark blue pen is accepted if contrast is sharp. Red or green ink is strictly rejected.
Will reducing signature to 10-20KB make it blurry?▼
No! Our tool applies intelligent client-side canvas binary-search compression, ensuring maximum pixel sharpness at the exact target file size.
Is my signature uploaded or saved on any server?▼
Never! All canvas processing runs 100% locally inside your web browser. Your signature never leaves your computer or phone.
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 →Govt Job & Bank Portals 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.