Converting JPG to PDF gives you a larger file with identical content. It runs in your browser: nothing is uploaded, there is no queue and no size limit.
What changes when you convert JPG to PDF
- PDF is lossless, but it cannot restore what JPG already threw away. The file will be larger, often much larger, with exactly the same picture in it.
- Each image becomes one page, at its own size or fitted to A4 / Letter. Drop several images to get a single multi-page PDF, in the order you dropped them.
When to convert, and when not to
Convert to PDF for documents that must look identical for everyone. Fixed layout that looks the same everywhere. The format for sending, signing and printing.
Keep JPG for photographs shared with anyone. The universal photo format. Lossy, no transparency, opens everywhere.
Do not convert to PDF hoping to improve quality: the detail JPG discarded is gone. Convert only when a tool insists on PDF.
How to convert JPG to PDF
- Drop your JPG files on the converter above, or click to choose. Several at once is fine.
- Check the options if you need them: page size.
- Click Convert, then Download. Nothing was sent anywhere, your browser did the work.
Questions
Is my JPG file uploaded?
No. The conversion runs in your browser with WebAssembly. There is no upload endpoint on this site. You can open your browser's Network tab, or go offline after the page loads, and it still works.
Is there a file size limit?
No fixed one. The limit is your device's memory: a large images file on a phone is slower than on a laptop, but nothing is rejected for being big.
Is it free?
Yes, without an account, without a daily cap and without a watermark. Your device does the computing, so there is no server bill to pass on.
Will the quality drop?
No. PDF is lossless: the images content is stored exactly.
Can I convert several files at once?
Yes. Drop them all; each is converted in turn and you can download them one by one or as a single ZIP. For PDF, several inputs are merged into one document.
Which engine does the conversion?
PDF engine (pdf.js + pdf-lib), compiled to WebAssembly and running in your browser. First use downloads about 1.5 MB, cached afterwards.