FreeNo uploadNo sign-upBatch
PDF to WebP Converter
Make PDF images lighter for the web with WebP. Free and private.
Drop PDF files here
batch and mixed formats welcome
- Private by design. Converted inside your browser.
- Instant. No upload queue, no waiting.
- Unlimited. Convert hundreds of files, download as ZIP.
How to convert PDF to WebP
Add your PDF files
Drop them on the converter, click Choose files or paste from the clipboard. You can add as many as you like.
Adjust the settings
Set the WebP quality. 80–90% is a good balance between size and sharpness.
Download your WebP files
Each file converts automatically. Save files one by one or all at once as a ZIP.
Why convert PDF to WebP?
PDF is a fixed-layout document format that looks the same on every device. It is the standard for forms, contracts, invoices and printing.
Each page is rendered exactly as a PDF viewer would show it.
WebP files are usually much smaller than JPG and PNG while keeping transparency, which makes pages load faster.
PDF vs WebP
| PDFPortable Document Format | WebPWebP image | |
|---|---|---|
| Type | Fixed-layout document | Raster image for the web |
| Compression | Depends on the content | Lossy or lossless |
| Transparency | Supported | Supported |
| Animation | Not supported | Supported |
| Support | Every device; accepted by most portals | All modern browsers; patchy in older desktop apps |
| Best for | Sending, printing and submitting documents | Website images where page speed matters |
Frequently asked questions
Is WebP smaller than PDF?
Usually, yes. WebP compresses efficiently and is supported by all modern browsers. The exact saving depends on the image.
Can I convert many PDF files at once?
Yes. Add as many files as you like; each one converts automatically and you can download them all as a ZIP.
How do I open PDF files without converting?
You need software that supports PDF. If you only need to view, share or upload the image, converting it is usually quicker than installing a new program.
Are my files uploaded to a server?
No. formatmath converts files with code that runs inside your browser. Your files are never uploaded, stored or seen by us.
Is it free?
Yes. There is no watermark and no daily limit. An account is optional and only keeps a history of your conversions.