# Convert to WebP — Convert images to WebP on Mac

Make small, web-ready WebP images, lossy or lossless, with transparency kept. Part of OneMacTools, 151 private tools in one native Mac app (macOS 26 or later); category: Images. Runs on your Mac; nothing is uploaded.

Convert JPEG, PNG, HEIC, TIFF and RAW images to WebP, the format websites load fastest. Choose lossy compression with a quality slider, or lossless for graphics and screenshots, and optionally cap the size. Transparency is kept, and camera details are removed so the files stay small and private.

Page: https://www.onemactools.com/tools/convert-to-webp · Download: https://www.onemactools.com/download · Pricing: https://www.onemactools.com/pricing

## How to use it
1. **Install the WebP encoder once.** The first time, OneMacTools offers to install Google's free WebP encoder through Homebrew with one click.
2. **Drop your images.** Add JPEG, PNG, HEIC, TIFF or RAW files, as many as you like.
3. **Choose the compression.** Lossy with a quality slider for photos, or Lossless for screenshots, logos and graphics. Cap the size if the images are bigger than your site needs.
4. **Click Convert.** Each image becomes a .webp file with the same name.
5. **Upload them.** The WebP files are saved in a new dated folder in Downloads › OneMacTools, ready to upload. Use the Preview (eye) button or Show in Finder to open them.

## Options
- **Compression:** Lossy makes the smallest files and suits photos. Lossless keeps every pixel exactly and suits screenshots, icons and graphics with flat colour and text.
- **Quality:** From 40% to 100%, 80% by default. Shown for lossy compression only. 75–85% is a good range for website photos; go higher for hero images and product shots.
- **Max size:** Keep original, or cap the longest edge at 3840, 2048, 1600 or 1024 px. Smaller images are never enlarged.

## Tips
- Size images for where they'll appear. A blog image shown at 800 px wide rarely needs more than 1600 px, which covers high-resolution screens.
- Use Lossless for screenshots and UI images. It's often much smaller than the original PNG and keeps text perfectly crisp.
- Keep your originals. WebP is great for delivery, but JPEG, PNG or HEIC masters are easier to edit later.
- If a site or app won't accept WebP, convert back with Convert Images, which reads WebP and saves PNG or JPEG.

## Questions
**How do I convert JPG or PNG to WebP on a Mac?**
Drop the images onto Convert to WebP, choose Lossy for photos or Lossless for graphics, and click Convert. The .webp files are saved in a new folder and your originals stay as they were.

**Lossy or lossless WebP?**
Lossy for photos: it's much smaller and the difference is hard to see at 75–85%. Lossless for screenshots, logos and diagrams, where it keeps edges and text exactly sharp.

**What quality should I use for WebP?**
80%, the default, suits most website photos. Drop to 70% for thumbnails or backgrounds, and go up to 90% for images people will look at closely.

**Does WebP keep transparency?**
Yes. Transparent PNGs stay transparent in both lossy and lossless WebP.

**Can I convert HEIC iPhone photos straight to WebP?**
Yes. HEIC, RAW and other formats are read with macOS's own image support first, then encoded as WebP.

**Will WebP images work everywhere?**
All modern web browsers show WebP. Some older apps, email clients and upload forms don't accept it, so keep a JPEG or PNG version for those.