The short answer
JPEG, PNG, and WebP use optimized image compression when the server runtime is available. Documents, spreadsheets, PDFs, text, audio, and video are packaged into a compressed ZIP privately in your browser.
Online File Compressor
Compress images or create a ZIP for PDFs, DOCX, Excel, text, audio, and video files before sharing.
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Put the result to work.
Create a temporary Room or Quick Share when you are ready.
Designed for temporary work
File results are stored outside direct public access and use a session-bound link. They expire after 60 minutes. Calculator inputs stay in your browser and are not uploaded.
Common questions
Which files are supported?
JPEG, PNG, WebP, PDF, DOCX, XLS, XLSX, CSV, text, common audio, and common video formats are accepted. ZIP compression may save little space for media and Office files that are already compressed.
How long is my result stored?
Temporary results expire after 60 minutes, or are marked consumed after a Room or Quick Share handoff.