Optimise images for web & sharing

Large photos are slow to upload and email. These tools shrink and reshape images entirely in your browser.

By goal

• Reduce file size (smaller JPG/PNG/WebP) → Compress Image
• Change dimensions (fit a width/height) → Resize Image
• Switch format (JPG ↔ PNG ↔ WebP) → Convert Image
• Cut to a region or aspect ratio → Crop Image

A typical flow

1. Crop to the part you want.
2. Resize to the width your page or platform needs.
3. Convert to WebP, then Compress to trim the last bytes.

Before you post

Photos often carry hidden metadata (location, device). If you are sharing publicly, also strip EXIF data — see Protect privacy.

Related guides

• Work with PDF files
• Share files without leaking private data

All task guides · Image tools category · Knowledge pack root

機器可讀原始檔（供 AI 檢索）：/okf/guides/optimise-images.md