Image Compression FAQ
Image Compression FAQ
Learn how PixelPress handles privacy, local compression, target file sizes, GIF limits, and format conversion in your browser.
FAQ
Frequently Asked Questions
Will my images be uploaded to a server?
No. PixelPress uses browser File APIs, Canvas, and Blob downloads. Your files stay inside your local browser session.
What is the difference between lossless-first and smart compression?
Lossless-first keeps original pixels when possible. Smart compression adjusts quality and dimensions to reach a target size for web, ecommerce, and social media use.
Can animated GIFs be compressed?
Browser Canvas cannot re-encode animated GIFs directly. GIF output is preserved; converting to PNG, JPEG, or WEBP processes the first frame.
Why do some PNG files not become smaller?
If a PNG has already been optimized, browser re-encoding may not reduce it much. In smart mode, PixelPress can convert or resize to reach stricter targets.