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PixelKit PixelKit
140×60 px · 280×140 px · 10KB–20KB JPG Compliant

Signature Resizer & Compressor Online

Crop unnecessary borders, rescale to official 2:1 signature dimensions, and compress strictly between 10KB and 20KB JPG with pin-sharp ink strokes.

Locked Preset: 10–20 KB • 280 × 140 px (2:1 aspect)
Drop photo for passport or visa portal or browse files

Supports JPG, PNG, HEIC, WEBP, PDF, SVG, TIFF, AVIF, GIF, BMP

No file size limit Add unlimited photos 100% in-browser

No files selected yet. Drag & drop photos, documents or click browse above.

Government & Banking Exam Signature Standards

Compare signature dimension and file size requirements across major recruitment portals:

Portal / Exam Required Dimensions File Size Bracket Ink Color
UPSC CSE & NDA 280 × 140 px (3.5 × 1.5 cm) 10 KB – 20 KB Black ink only
SSC CGL, CHSL, MTS 140 × 60 px (4.0 × 2.0 cm) 10 KB – 20 KB Black / Blue ink
IBPS PO & Clerk 140 × 60 px (2:1 ratio) 10 KB – 20 KB Black ink on white
SBI PO & Clerk 140 × 60 px 10 KB – 20 KB Black ink on white
Railway RRB NTPC 80 × 35 mm (approx. 140×60 px) 10 KB – 40 KB Blue or Black ink
NTA JEE & NEET 3.5 × 1.5 cm 4 KB – 30 KB Black ink on white

Why In-Browser Processing is Essential for Sensitive Photos & IDs

🔒 Zero Cloud Uploads

Signatures, Aadhaar IDs, and passport photos are sensitive personal biometric assets. PixelKit processes all operations locally in browser RAM.

⚡ Sub-Second Quantization

Powered by WebAssembly and Canvas binary-search encoding, resizing and compressing takes under 200ms with zero server latency.

🎯 Portal Pass Guarantee

Dimensions, aspect ratios, and KB file limits are locked directly to the official government guidelines for immediate intake clearance.

Related Signature & Biometric Tools

10KB to 20KB Signature Resizer Crop Image 2:1 Signature Ratio Thumb Impression Resizer UPSC Signature Resizer Portal Photo & Signature Chart

Frequently asked questions

What are the exact photo and signature dimensions required for online exams?
Most portals specify a 2:1 horizontal rectangle: 140 × 60 pixels or 280 × 140 pixels (equivalent to 3.5 × 1.5 cm or 4.0 × 2.0 cm at standard print resolutions). File size must strictly be between 10 KB and 20 KB in JPG format.
Why do exam portals reject signatures smaller than 10 KB?
Portals enforce a minimum file size (typically 10 KB) to prevent candidates from uploading blank or corrupt placeholder files. PixelKit uses binary search quantization targeting 14 KB–18 KB, landing right in the sweet spot.
How do I keep my signature legible and crisp when compressed under 20KB?
Crop all excess white paper margins tightly around the signature strokes before resizing. Removing large empty white borders allows the JPEG encoder to allocate all bits to the ink strokes rather than plain background.
Is my candidate signature kept secure and private?
100% yes. Signatures are sensitive biometric assets. PixelKit operates entirely inside your local browser memory using Canvas and WebAssembly. No signature photos ever touch external servers.