Convert your images to WebP and ship lighter pages
WebP is the safe modern default: meaningfully smaller than JPEG and PNG, with transparency and animation support, and it works in every current browser. Optimagio converts single images, whole folders, or API payloads to WebP in one step.
- Roughly 25–35% smaller than equivalent-quality JPEG
- Keeps PNG-style transparency without the PNG file size
- Convert one image, a 50,000-file batch, or an API request
Real product capability — not a placeholder.
What is WebP and why convert to it?
WebP is an image format developed by Google that supports both lossy and lossless compression, transparency (an alpha channel), and animation. For the same perceived quality it is usually 25–35% smaller than JPEG and far smaller than PNG, which is why it has become the default modern web format.
When to choose WebP over AVIF
WebP and AVIF are both excellent. WebP encodes faster and has slightly broader long-tail support, making it the safe universal default. AVIF compresses photographs even further and is ideal when you want the absolute smallest files. Many teams serve AVIF with a WebP fallback — Optimagio can produce both.
A complete WebP workflow
From any source
Convert JPEG, PNG, GIF, or AVIF inputs to WebP — by upload, by URL, or from a ZIP archive.
Transparency kept
Alpha channels survive the conversion, so logos and cut-outs stay clean without shipping a heavy PNG.
Lossy or lossless
Pick auto/medium for photos or push to max for the smallest possible feed and thumbnail assets.
Bulk at scale
Convert tens of thousands of images in a single resumable batch with live progress.
Developer API
Add format=webp to an /api/optimize call and get a converted, optimized result back.
Resize on convert
Drop oversized images to their real display size in the same pass you convert them.
Convert to WebP from the API
One request converts and compresses in a single pass.
curl -X POST https://optimagio.com/api/optimize \
-H "X-API-Key: opt_your_key" \
-F "accept_file=true" \
-F "[email protected]" \
-F "format=webp" \
-F "compression=auto"Returns the optimized WebP URL plus original/optimized size and percent saved.
Frequently asked questions
How much smaller is WebP than JPEG?
For the same visual quality, WebP is typically 25–35% smaller than JPEG and dramatically smaller than PNG for graphics with transparency.
Do all browsers support WebP?
Yes. Every current major browser — Chrome, Edge, Firefox, and Safari — supports WebP, which is why it is a safe default format for the modern web.
Can I convert images to WebP in bulk?
Yes. Upload a folder or ZIP, or send an upload-first batch through the API. A single batch supports up to 50,000 files with pause, resume, and a downloadable ZIP of results.
Does WebP support transparency?
Yes — WebP supports an alpha channel, so transparent logos and cut-out product shots convert from PNG to WebP without losing transparency and without the PNG file size.
Start optimizing your images today
Try the free public tool now, then upgrade for higher limits, bulk batches, the API, storage, and reports.
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