How One Resizer Works

A simple 4-step workflow that keeps your private documents and photos on your device.

Step 1: Select or Drag & Drop Your File

Choose your file. It is read into browser memory as a local Blob or ArrayBuffer. No network upload occurs.

Step 2: Choose Exact Settings

Select dimensions (PX, IN, CM, MM), target KB/MB limits, compression levels, or watermark parameters in the real-time workspace.

Step 3: Client-Side Processing

HTML5 Canvas and WebAssembly algorithms process your pixels or PDF streams locally on your device hardware.

Step 4: Verified Instant Download

Verify the actual calculated output dimensions and file size before saving directly to your downloads folder.