Document & Certificate Optimizer
Resize Image to 100KB Online Free
Compress scanned certificates, marksheets, thumb impressions, and photos to exactly 100 KB or less. High-contrast legibility preserved for official portals.
Target 100 KB Active: Preserves high text contrast and fine print on certificates while strictly capping file size under 100.0 KB
Click to upload or drag & drop photo(s) here
Select candidate photo, signature, or certificates • Supports multiple files
Target 20KB / 50KB / 100KBSSC & UPSC Exam PresetsPassport 3.5 × 4.5 cm
Other Common Target Sizes:Resize to 20KB (Signatures) →Resize to 50KB (Photos) →Convert to PDF →Signature Maker →
Document & Certificate Standards Reference
Standard 100KB Document Guidelines
| Portal / Exam | Target Document | Allowed File Size | Standard Dimensions | Format |
|---|---|---|---|---|
| SSC & State PSC Recruitment | 10th / Degree Certificate | 50 KB – 100 KB (or max 100 KB) | A4 / 200 DPI scan | JPG / PDF |
| UPSC Civil Services OTR | Photo ID / Caste Certificate | 20 KB – 300 KB (Recommended: ≤100 KB) | Standard scan | JPG / PDF |
| University & Board Portals | Marksheets & Transfer Certificate | Max 100 KB | Clean legible crop | JPG / JPEG |
| Banking & Insurance Recruitment | Left Thumb Impression (LTI) | 20 KB – 50 KB / 100 KB | 240 × 240 px (200 DPI) | JPG / JPEG |
100% In-Browser Privacy Protection
Your certificates and marksheets never upload to remote servers. All calculations occur inside your local device memory using WebAssembly.