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WebP to PDF converter

WebP to PDF places the decoded WebP still on one PDF page, which is useful for uploads but not for searchable text or animation.

  • Converted with Image engine · nothing stored
  • Free: 5 conversions a day · 5 MB each
  • Higher limits →

From real runs

What you get — and what changes

  • Decoded still image Kept

    The 860 byte 420×260 RGBA WebP became one 7,843 byte PDF page in the API test.

  • Page dimensions Changed

    At default 96 dpi, the 420×260 image produced a 315×195 point PDF page.

  • Transparency Lost

    WebP alpha was flattened before PDF writing, using the configured background color rather than PDF transparency.

  • Animation Lost

    The image reader uses the first frame for animated sources, so WebP frame timing is not represented in the PDF.

  • Searchable text Lost

    Text inside a screenshot WebP remains pixels on the PDF page and cannot be selected without OCR.

  • WebP metadata Changed

    The generated PDF is focused on visible pixels; WebP chunks are not preserved as equivalent PDF metadata.

Sample conversions

Transparent WebP asset

Input
860 byte lossless WebP at 420×260 with RGBA transparency around overlapping shapes.
Output
7,843 byte PDF, one page, 315×195 points. The visible art was present, with transparency flattened for the page.

Screenshot WebP for a portal

Input
A WebP screenshot containing visible UI labels and annotations that an upload form wanted as PDF.
Output
A PDF page image. The upload format was satisfied, but the labels were not real PDF text.

A real WebP → PDF run

We converted our WebP sample (23 KB) with Image engine on 2026-10-20. It took 36 ms and produced a 32 KB PDF file, 1.4× larger than the input. The engine raised 1 warning, listed below.

Input · sample.webp · 23 KB

1200 × 800 px, extended VP8X

Width
1,200
Height
800
Encoding
extended VP8X

Output · sample.pdf · 32 KB

PDF 1.4, 1 page, no text layer, 1 image object

Version
1.4
Pages
1
Images
1
Text layer
no
  • Image metadata stripped from output.

Is your file a scan?

WebP screenshots and photographed documents become image-only PDF pages. Deep Read is the path when the receiving workflow needs selectable text, tables, or structured fields.

Options and when to change them

dpi
Adjust DPI when the same WebP pixels should occupy a different physical size on the PDF page.
background
Set the color used when transparent WebP pixels are flattened into the PDF image.
width
Resize before PDF creation if the upload target expects smaller page imagery.

Do it yourself

Pillow 11

bash
from PIL import Image

im = Image.open("image.webp").convert("RGBA")
bg = Image.new("RGBA", im.size, "white")
bg.alpha_composite(im)
bg.convert("RGB").save("image.pdf", resolution=96)

The PDF is image-only and uses one still frame; OCR and animation export require other tools.

WebP to PDF by API or MCP

The HTTP API and the MCP server run the exact engine this page uses (Image engine); the response carries the same warnings the web converter shows. Check support first with GET /api/v1/pairs?from=webp&to=pdf.

curl
curl -X POST https://filetypeconverters.com/api/v1/convert \
  -H "Authorization: Bearer $FTC_API_KEY" \
  -F "file=@input.webp" -F "from=webp" -F "to=pdf" \
  -F 'options={"dpi":96}' \
  --output output.pdf

Options this engine accepts for WebP → PDF

KeyApplies toTypeDefault
dpiReading WebPnumber96
widthWriting PDFnumber0
heightWriting PDFnumber0
fitWriting PDFcontain · cover · fillcontain
qualityWriting PDFnumber90
backgroundWriting PDFstring#ffffff
stripMetadataWriting PDFbooleantrue
API reference

When this is the wrong conversion

  • Use /convert/webp-to-png when transparency should stay editable as an image alpha channel.
  • Use screenshot-to-text when a WebP screenshot needs text extraction instead of a page image.
  • Keep animated WebP or convert through video tooling when motion is the important content.

WebP to PDF questions

Does WebP to PDF keep transparency?

No in the PDF output we tested. The RGBA WebP was flattened to a page image before our image engine wrote the PDF.

Why is the PDF page size 315×195 points?

Our image engine maps pixels through the DPI setting. Our 420×260 WebP at 96 dpi became 4.375×2.708 inches, or 315×195 points.

Will WebP screenshot text be searchable in the PDF?

No. The conversion places the screenshot as an image. Use OCR or Deep Read when the words need a text layer.

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