Best Online JPG File Compressor & Size Reducer
Whether applying for competitive examinations like SSC CGL, UPSC Civil Services, IBPS Bank PO/Clerk, Railway RRB, CTET, NEET, or submitting passport and visa forms, almost every recruitment portal has strict file size criteria for JPG images.
A photo taken with a modern smartphone typically ranges from 3 MB to 8 MB (3000KB to 8000KB). When you try to upload this image to an official portal demanding a file size under 50KB or 20KB, the upload fails immediately with errors like "File size must be between 20KB and 50KB".
SizeSnap’s JPG to KB tool solves this challenge by mathematically recalculating the image matrix to meet your required KB specification while maintaining full readability of your facial features and documents.
Standard JPG File Size Specifications for Govt Portals
| Exam / Portal Name | Photograph Required | Signature Required | Acceptable Format |
|---|---|---|---|
| SSC (CGL, CHSL, MTS, GD) | 20 KB – 50 KB | 10 KB – 20 KB | JPG / JPEG |
| UPSC (CSE, CDS, NDA, OTR) | 20 KB – 300 KB | 20 KB – 300 KB | JPG / JPEG |
| IBPS / SBI Bank Exams | 20 KB – 50 KB | 10 KB – 20 KB | JPG / JPEG |
| Railway RRB (NTPC, ALP, Group D) | 30 KB – 70 KB | 30 KB – 70 KB | JPG / JPEG |
| PAN Card (NSDL / UTIITSL) | Under 50 KB (200 DPI) | Under 20 KB (200 DPI) | JPG / JPEG |
Frequently Asked Questions (FAQ)
How does the JPG to KB compressor work?▾
SizeSnap uses an intelligent binary search compression engine that runs directly inside your browser. It adjusts the JPEG quantization matrices and pixel dimensions iteratively until your output file reaches your exact requested target (e.g. exactly 50KB or 20KB), without uploading your file to any cloud server.
Can I compress my JPG to an exact KB number like 20KB or 50KB?▾
Yes! You can choose popular presets (20KB, 40KB, 50KB, 100KB, 200KB) or enter any custom target KB number required by your exam or employment portal (such as SSC, UPSC, State PSCs, or Bank exams). SizeSnap guarantees the file will not exceed your limit.
Will my JPG photo lose clarity or become blurry?▾
SizeSnap is engineered to maximize visual fidelity. It prioritizes perceptual quality first, so your facial features, text documents, or signature lines stay sharp and legible while shedding unnecessary metadata and redundancy.
Why do portals require photos to be strictly under 50KB or 20KB?▾
Government and institutional recruitment servers handle millions of applicants concurrently. Limiting individual passport photographs to 20KB-50KB and signatures to 10KB-20KB keeps server bandwidth lightweight and database indexing lightning-fast.
Is it safe to compress Aadhaar, PAN card, or personal passport photos here?▾
Yes, 100% secure. SizeSnap processes your pictures locally using HTML5 Canvas and WebAssembly. Your documents and photographs are never sent over the internet and never saved to any database.