Expert technical write-ups on digital resolution math, exact-KB binary search compression, PDF stream compaction, and navigating government exam portal file restrictions.
Understand how browser-local binary search iteration achieves exact file sizes within 1 KB tolerance without sending images to remote servers.
Why changing pixel dimensions changes byte weight, and why high-resolution images can still be compressed to low kilobytes.
Master the formula Pixels = (Inches) × DPI and Pixels = (CM / 2.54) × DPI for printing, passport photos, and technical diagrams.
A side-by-side benchmark comparing lossy DCT compression, DEFLATE lossless transparency, and modern VP8-based WebP encoding.
Step-by-step specifications for SSC, UPSC, IBPS, State PSCs, US Visa, and Passport applications: 20 KB to 50 KB strict restrictions.
Understanding 8x8 DCT quantization blocks, chroma subsampling artifacts, and how dimension downsampling preserves sharper text than aggressive compression.
Raster image wrapper PDFs vs vector/text object streams: why scanned PDFs don't allow text selection without OCR and take more space.
A deep-dive into how PDF-Lib and client-side engines strip unused XObjects, compress streams, and downsample embedded image DCT data.
Uncovering author names, edit history, software versions, and embedded file paths stored inside PDF Info dictionaries and XMP packages.
Fix "File size exceeds limit", "Invalid file signature/MIME type", "Dimension aspect ratio mismatch", and corrupted PDF header rejections.
