Need to turn a photo into a PDF? Or combine a stack of scanned pages into a single document? Most online tools require you to upload your files to a server — and hope they get deleted afterwards. There is a better way.

WebConverter's Image to PDF tool runs entirely in your browser. Your images never leave your device. There is nothing to install, no account to create, and no file-size limit. This guide explains exactly how it works and what you can do with it.

Step-by-Step: Convert Images to PDF

  1. Open the converter — go to Image to PDF.
  2. Add your images — drag and drop files onto the page, or click to browse. You can add JPEG, PNG, BMP, GIF, WebP, TGA, and more.
  3. Reorder if needed — the thumbnail queue shows all images in order. Remove any you don't want.
  4. Click "Convert to PDF" — the PDF is built in seconds, entirely in your browser.
  5. Download — click the download button to save your PDF.

That's it. No upload, no waiting, no watermarks.

Combine Multiple Images into One PDF

One of the most common use cases is merging multiple images into a single PDF. This is perfect for:

  • Combining scanned pages into one document
  • Creating a photo portfolio or lookbook
  • Packaging receipts or invoices for email
  • Submitting multi-page forms as a single file

Simply drop all your images at once (or add them one by one). Each image becomes one page in the final PDF. The pages appear in the order shown in the thumbnail queue.

Make Your PDF Searchable with OCR

If your images contain text — scanned documents, screenshots, photos of whiteboards — you can enable OCR (Optical Character Recognition) to make that text searchable and selectable in the PDF.

Toggle the "Make PDF searchable with OCR" checkbox before converting. The OCR engine (Tesseract.js) is downloaded on first use (~10 MB) and runs entirely in your browser. No images are sent to any server.

Once enabled, the resulting PDF contains an invisible text layer behind each page image. You can:

  • Press Ctrl+F to search for text in the document
  • Select and copy-paste text directly from the PDF
  • Use PDF indexing tools to catalogue the content

Try it with the dedicated Image to Searchable PDF page, which has OCR pre-enabled.

Supported Image Formats

The converter accepts any image format your browser can decode:

  • JPEG — photos, camera output (JPEG to PDF)
  • PNG — screenshots, graphics with transparency (PNG to PDF)
  • BMP — legacy bitmap images (BMP to PDF)
  • GIF — simple graphics and memes (GIF to PDF)
  • WebP — modern web images (WebP to PDF)
  • TGA — game development and digital art (TGA to PDF)
  • ICO, HDR, HEIC — and any other format supported natively by your browser

How It Works Under the Hood

The converter uses two key technologies:

pdf-lib

pdf-lib is a pure JavaScript library for creating and modifying PDF documents. It runs in a Web Worker so the main page stays responsive while the PDF is being built. Each image is decoded via the browser's Canvas API, re-encoded as JPEG, and embedded into the PDF as a full-page image.

Tesseract.js (OCR)

When OCR is enabled, Tesseract.js — the leading open-source OCR engine — analyses each image for text. The recognised words are placed as an invisible text layer in the PDF, positioned to match the original image. This makes the text selectable without altering the visual appearance of the page.

Why Not Just Use a Server-Based Tool?

Server-based PDF converters have several drawbacks:

  • Privacy — your files are uploaded to someone else's server. You have no control over how long they are stored or who has access. Read more about the privacy risks.
  • Speed — uploading multiple high-resolution images and waiting for the server to process them can take minutes.
  • Limits — most free tools cap file size, page count, or number of conversions per day.
  • Energy — every server-side conversion consumes electricity. Browser-based conversion produces near-zero CO₂.

With WebConverter, the PDF is built on your own device in seconds. There are no limits, no accounts, and no compromise on privacy.

Try It Now

Ready to convert your images to PDF? Pick the page that fits your use case:

Convert Images to PDF — free, private, and instant.

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