Image Science & Form Guidelines फोटो साइज ज्ञान एवं सरकारी फॉर्म नियम
Clear, jargon-free explanations on how image compression algorithms work, why file size calculations differ, and how to avoid online form rejections • फोटो रिसाइजिंग और फॉर्म नियमों की संपूर्ण जानकारी।
KB vs MB: Image File Sizes Simply Explained
Learn the exact difference between KB and MB, why 1 MB is 1,024 KB, and why government application forms insist on strict KB limits.
What is 1 KB in Bytes? 1,024 vs 1,000 Explained
Understand the critical difference between 1,024 bytes (KiB / binary) and 1,000 bytes (KB / decimal) so your photo never gets rejected at portal validation.
Why Was Your Photo Rejected on an Online Application Form?
Detailed checklist of why UPSC, SSC, NEET, and visa portals reject uploaded photos, and how to fix size, dimensions, and background errors immediately.
JPEG vs PNG vs WebP: Which Format Do Online Forms Accept?
Compare JPEG, PNG, and WebP formats. Learn why 99% of government exam forms mandate JPG/JPEG and how to convert PNG without errors.
How Image Compression Works Behind the Scenes
Understand Discrete Cosine Transform (DCT), quantization, and chroma subsampling in plain language without advanced mathematics.
Pixels vs DPI vs File Size Explained
Understand the difference between digital pixels (200x230), print DPI (300 DPI), and file size in Kilobytes (50 KB) for exam forms.
How to Scan Signature for Online Forms with Phone
Step-by-step guide to capturing, whitening, cropping, and compressing signatures for SSC, UPSC, and IBPS online application forms.
How to Take a Valid Passport Photo at Home with Smartphone
Lighting, backdrop, posture, and facial framing guidelines to take an official passport photo at home without professional studio equipment.
Original Data Study: We Compressed 1,000 Photos to 20/50/100 KB
Empirical benchmark study analyzing PSNR (Peak Signal-to-Noise Ratio), SSIM, and visual readability across 1,000 real smartphone portraits.