PDF to WebP Converter

Convert PDF to WebP Online

Turn every page of a PDF into a WebP image — the format built for web delivery, where lossy files run 25–34% smaller than a comparable JPEG at the same SSIM quality and lossless files land about 26% under an equivalent PNG, according to Google's own comparison study. That makes it the right target for document previews, card thumbnails, catalogue pages and anything else that has to load fast in a browser. Each page comes back as its own .webp file, with a "Download All (Zip)" button for multi-page documents.

Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark.

How to Convert PDF to WebP

1. Upload Your PDF File: Drag the PDF onto the page or click "+ Add Files". Every page is rendered separately, so a 12-page brochure returns 12 WebP images in page order.
2. Set the Conversion Quality (DPI): This is the render density. 72 or 96 DPI is right for thumbnails and card previews, 150 DPI for something a reader will actually look at on screen, and 300 DPI — the preselected value — for a page someone may zoom into.
3. Choose Quality Preset and Lossless: Quality Preset sets the WebP encoder's quality target and opens on Very High (Recommended). Lossless? opens on No (Recommended), which is where the format's size advantage comes from; switch it to Yes only when the pixels must round-trip exactly.
4. Convert and Download: Click "Convert" and download the images. No sign-up, no watermark.

WebP vs PNG vs JPG for Page Images

For pages that need real transparency, use PDF to PNG. For the widest possible compatibility with old software and mail clients, PDF to JPG is still the safe answer.

Quality, Lossless and Size Targeting

The Quality Preset dropdown maps to a numeric quality value handed to the WebP encoder. Those values are worth knowing, because the gap between "Very High" and "Medium" is much bigger than the labels suggest on text-heavy pages.

Switching Lossless? to Yes changes the encoder mode entirely: pixels round-trip exactly, which is the right choice for diagrams, screenshots and pages of pure line art. Expect a much larger file — lossless WebP competes with PNG, not with JPEG.

There is also a Specific file size mode under Image Compression. Name a byte budget and the converter repeatedly re-encodes, narrowing the quality value until the result fits — and with Auto Scale enabled it will also search the pixel width. The budget is applied to each page independently, not to the set as a whole, so a ten-page PDF with a 500 KB target produces ten files of roughly 500 KB each.

Frequently Asked Questions

Can I keep the transparent background from my PDF?

Not on this conversion. WebP the format supports an alpha channel, but the Image Transparency control here offers fill colours only — White is preselected — and the "Unchanged" entry that preserves alpha is available exclusively when the output is PNG. Transparent regions are painted with your chosen colour before the page is encoded, so every WebP comes out opaque. Convert with PDF to PNG if the alpha matters.

Does a multi-page PDF become one animated WebP?

No. WebP does support animation, but this conversion is a page rasteriser: a 20-page PDF gives you 20 separate still images, delivered together with a "Download All (Zip)" button. Nothing on this page assembles the pages into a single animated file.

Should I leave Lossless off?

For web use, yes. Lossy WebP at the preselected Very High preset is where the 25–34% advantage over JPEG comes from, and on a rendered document page the difference from lossless is rarely visible at 100% zoom. Turn Lossless on when the page is a diagram, a UI screenshot or line art that must stay pixel-exact, or when the image is a master you will re-encode later.

What DPI should I use for a website thumbnail?

96 DPI puts a US Letter page at 816 × 1056 pixels, which is comfortably enough detail for a card preview, a modal or a hover thumbnail, and it keeps the file tiny. Move to 150 DPI when the reader is expected to read the page rather than recognise it, and to 300 DPI only when they will zoom in. Rendering a thumbnail at 300 DPI and then scaling it down in CSS wastes bandwidth on every page load.

Is there a maximum page size WebP can handle?

Yes — 16383 × 16383 pixels, a hard limit that comes from VP8 storing width and height in 14 bits each. A US Letter or A4 page stays inside that at every DPI offered here, including 1200. Large-format pages do not: a tabloid or A3 sheet at 1200 DPI works out well past 16383 pixels on the long edge. If you are rasterising posters, plans or spreads, keep the DPI to 600 or lower.

Why is the text in my WebP not selectable?

Because the conversion rasterises each page: vector glyphs and embedded fonts are painted into a grid of pixels, so there is no text layer left. That is true of every image format, not a quirk of WebP. Keep the PDF as the searchable copy and use the WebP purely for display, or run OCR on the image if you need the words back.

Will old browsers or email clients show these images?

Modern browsers all will — Chrome from version 32, Firefox from 65, Edge from 18 and Safari from 16. Email clients are the weak spot, since several desktop and webmail clients still do not decode WebP reliably. For an email campaign or a document you are attaching for someone else to open, PDF to JPG remains the safer target.

How do I get the files smaller without making the text unreadable?

In this order: lower Conversion Quality (DPI) first, because pixel count dominates everything else; then scale the finished image under Image resolution; then step the Quality Preset down to High or Medium. Reach for the Specific file size mode when you have a hard budget and want the converter to find the quality value for you. An already-converted file can be squeezed further with Compress WebP.

Does the conversion strip metadata from the PDF?

The output is a fresh image encoded from the rendered page, so PDF-level metadata — title, author, keywords, bookmarks, form fields, annotations — does not carry across into the WebP. Only the visible appearance of each page does. If any of that information matters, keep the original PDF alongside the images.