JPG to PDF

How to do it

1. Download Asteria and open it. It's free and needs no account.
2. Drop your JPG files onto its window, or press ⌘O (Ctrl O on Windows) to choose them. Drop as many as you like.
3. Type searchable pdf (ocr)and press Enter. Searchable PDF from a scanned image.
4. The first time, Asteria asks to download Tesseract OCR, a free add-on from the Tesseract project, under the Apache-2.0 license. It shows the download size before you say yes, and needs no administrator password. On Mac and Windows, it opens Tesseract OCR's official download page instead, and finds it once it is installed.
5. Press ⌘↵ (Ctrl ↵ on Windows) to save. The PDF files appear next to the originals, which stay exactly as they were.

Language: Tesseract code, e.g. fra+eng, default eng.

What it needs

JPG to PDF uses Tesseract OCR, a free program for text from pictures (OCR). Asteria doesn't bundle it. The first time you need it, Asteria offers to download it, checks the download against a pinned checksum, and keeps it in its own folder, where Settings can remove it again. If Tesseract OCR is already on your computer, Asteria uses that copy.

How it was tested

A real JPG file was converted on macOS on Apple silicon and Linux, and the PDF that came out was opened and checked with poppler pdfinfo to make sure it is what it says it is.