PDF to WebP

Runs in browser PDF Conversion

Pages are rendered with pdf.js and encoded as WebP by the browser (or by a WebAssembly encoder where the browser cannot). Choose pages, DPI and quality; download singly or as a ZIP.

Privacy: Processed locally in your browser. Your file is not uploaded.

When should PNG, JPEG or WebP be used?

PNG is lossless with transparency, right for screenshots, diagrams and anything with sharp edges or text; JPEG is lossy and much smaller for photographs; WebP offers both modes at roughly 25–35% smaller sizes than the older formats and is supported by every current browser. Converting a page to an image fixes its appearance but loses the text layer, so the choice depends on whether the result must stay searchable.

How to use PDF to WebP

  1. Drop a PDF.
  2. Set DPI and quality.
  3. Click "Convert to WebP".
  4. Download.

PDF to WebP features

  • WebP encoding by the browser, with a WebAssembly fallback (libwebp)
  • Quality slider and DPI options
  • Page selection
  • ZIP download
  • Password-protected input supported
  • Local processing

PDF to WebP example

Web thumbnails of a brochure

Input:

brochure.pdf, 96 DPI, quality 80

Output:

brochure-page-01.webp … — roughly a third smaller than the JPEG equivalents

Frequently asked questions about PDF to WebP

Why WebP?

WebP files are typically 25–35% smaller than JPEGs of the same visual quality and support transparency, which makes them the best choice for images on web pages.

Does it work in Safari?

Yes. Where a browser cannot encode WebP itself, a small WebAssembly encoder (libwebp) is loaded from this site and used instead.

What quality should I choose?

80–85 is a good default for pages with text and pictures; go lower for thumbnails and higher for detailed artwork.

Is my PDF uploaded to a server?

No. The file is opened and processed by your browser with WebAssembly and JavaScript; nothing is sent to Mutqan Soft or anyone else. Close the tab and the file is gone. Downloading the result needs a free account — no subscription, no payment.

Can I use it on a password-protected PDF?

Yes, if you know the password: the file list asks for it once and every operation then works on the decrypted pages. The output is saved without a password unless you protect it again.

Technical notes

canvas.toBlob("image/webp") is probed once; browsers that silently return PNG (Safari) get @jsquash/webp, a libwebp build loaded from this origin. Output dimensions match the PDF page at the requested DPI.

References