Why Manual Quality Sliders Waste Time
Job application portals, government immigration portals, and academic examination boards regularly enforce strict file size thresholds (e.g., "Passport photo must be under 50KB" or "Signature scan must not exceed 20KB"). Using typical graphic software requires repeatedly exporting at trial-and-error quality percentages, checking folder properties, and re-exporting until the file lands under the threshold.
DocSnap executes an automated **binary search quantization algorithm** inside HTML5 Canvas. Within milliseconds, the engine tests multiple JPEG quality and matrix scaling values, homing in on the highest possible visual clarity that remains strictly beneath your specified kilobyte cap.
Frequently Asked Questions
How does the exact KB compression algorithm work?
The tool uses a binary search quantizer inside your browser canvas. It evaluates iterative JPEG compression levels between 0.01 and 0.99 until the generated binary blob size lands right below your requested kilobyte target.
Does compressing an image below 50KB alter its dimensions?
The engine prioritizes JPEG quality quantization first. If the file cannot meet the target size without extreme artifacting, it scales down canvas pixel dimensions proportionally to satisfy the byte ceiling.