Compress Image to 20KB Online
Free JPG Resizer for Online Forms
Compress your photograph, signature, or scanned thumb impression strictly under 20 KB in seconds. Perfectly tuned for SSC, IBPS, Sarathi Parivahan, and state recruitment portals with zero quality degradation.
Upload Photo, Signature, or Thumb Impression
Drag and drop image here, or tap to browse from phone/PC
Your resized preview will appear here with live file size stats.
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Direct dimensions, pixel limits, and KB requirements for top Indian government and entrance exam forms.
| Exam / Application Portal | Photo Dimensions & Size | Signature Dimensions & Size | Thumb / Marksheet Rules | Quick Preset |
|---|---|---|---|---|
| SSC CGL / CHSL / MTS / GD | 3.5 × 4.5 cm (200 × 230 px) 20 KB to 50 KB JPG |
4.0 × 2.0 cm (140 × 60 px) 10 KB to 20 KB JPG |
White background, without spectacles or cap | |
| UPSC Civil Services / OTR | 3.5 × 4.5 cm (min 350 × 350 px) 20 KB to 300 KB JPG |
min 350 × 350 px 20 KB to 100 KB JPG |
Face must cover 75% of photo; name & date at bottom | |
| NSDL & UTI PAN Card | 213 × 213 px (300 DPI) Under 50 KB JPG |
400 × 200 px (300/600 DPI) Under 50–60 KB JPG |
Aadhaar PDF / Proof documents under 300 KB | |
| NEET UG & JEE Main (NTA) | 3.5 × 4.5 cm (Passport & Postcard) 10 KB to 200 KB JPG |
3.5 × 1.5 cm 4 KB to 30 KB JPG |
Postcard size: 4"x6" (10-200 KB); Fingers/thumb 10-200 KB | |
| IBPS / SBI PO & Clerk | 200 × 230 px (4.5 × 3.5 cm) 20 KB to 50 KB JPG |
140 × 60 px (Black ink only) 10 KB to 20 KB JPG |
Left Thumb Impression: 240 × 240 px (10 KB to 20 KB) | |
| Sarathi Driving Licence | 35 × 45 mm (Passport photo) 10 KB to 20 KB JPG |
35 × 15 mm 10 KB to 20 KB JPG |
Medical cert & documents PDF under 200 KB | |
| MPSC & Police Bharti | 3.5 × 4.5 cm (160 × 212 px) 20 KB to 50 KB JPG |
256 × 64 px 10 KB to 20 KB JPG |
Caste certificate & Non-Creamy Layer PDF under 250 KB |
📐 CM to Pixel & DPI Calculator
Need to convert centimeter or millimeter requirements to pixel dimensions? Use our formula-accurate calculator:
Frequently Asked Questions
Answers to common questions about compress image to 20kb and fixing upload validation errors.
How to compress image to exactly 20KB online?
Upload your photo or signature file above, ensure the max size is set to 20 KB, and tap Download. Our compression engine optimizes the image matrix to ensure it stays strictly under 20 KB while preserving sharpness.
Will my photo become blurred when compressed to 20KB?
No. Our algorithm uses adaptive quantization to retain face details, contrast, and clean white backgrounds without pixelation.
Can I compress my signature to 20KB on mobile?
Yes! This tool runs completely inside your mobile browser on Android and iPhone with no app download required.