Compress PNG Images Without Uploads
ImageHob compresses PNG files entirely in your web browser using local hardware, reducing file sizes by 45% to 78% while preserving alpha transparency. Your PNG images are never uploaded to a cloud server, guaranteeing complete privacy for UI assets, screenshots, and sensitive graphics.
How do I compress a PNG without losing quality or transparency?
Drop your PNG into ImageHob and adjust the Visual Fidelity slider between 75% and 85%—our browser engine preserves the full alpha transparency channel while stripping redundant pixel overhead.
Is it safe to compress confidential screenshots and PNG documents here?
Yes, ImageHob is 100% client-side, meaning your PNG screenshots, financial statements, and unreleased product mockups never leave your computer’s volatile memory.
Frequently Asked Questions
Does compressing a PNG remove its transparent background?
No. When you keep the output format set to Auto, PNG, or WebP, ImageHob preserves the full 8-bit alpha channel so your transparent background remains intact.
Why should I convert a large PNG to WebP?
WebP supports full alpha transparency just like PNG, but uses predictive block coding that makes transparent images an average of 68% smaller than standard PNG files.