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JPG to PDF

Combine one JPG or a hundred into a single PDF. Because PDF supports JPEG natively, the original compressed data is copied in as-is — no second round of compression, no blur. Converted on this device; nothing is uploaded.

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Why JPG to PDF doesn’t have to lose quality

Most converters decode your JPEG and compress it again. Step through what happens here, then compare with other formats.

  1. 1

    Read the bytes

    The browser reads the file from your disk into memory.

  2. 2

    Copy the JPEG stream as-is no quality loss

    PDF understands JPEG natively (the DCTDecode filter), so the compressed data is placed in the PDF unchanged — no second round of compression.

  3. 3

    Size the page

    Pixel dimensions become points (1 px = 0.75 pt at 96 px/in), then scaled to fit the page you picked.

Convert JPG to PDF in three steps

  1. Drop or choose your JPG files (camera photos, scans, screenshots saved as JPEG).
  2. Drag them into order and rotate any that are sideways.
  3. Pick A4, Letter or “Same as image” and press Convert.

JPG vs JPEG

They are the same format. “.jpeg” is the full extension; “.jpg” dates from old Windows systems that allowed only three letters. Both are handled identically.

When to choose a smaller file

Many upload portals (visa applications, job sites, university forms) cap PDFs at 2–5 MB. A single modern phone photo is often 2–4 MB, so choose “Smaller file” — each photo is resized to 1600 px on the long side and saved at 72% JPEG quality, which keeps documents legible and usually lands around 200–400 KB per page.

Questions

Are my files uploaded anywhere?

No. The page loads once, then all reading, decoding and PDF building happens in your browser tab with JavaScript and WebAssembly. You can switch to airplane mode after the page has loaded and it still works.

Does converting JPG to PDF reduce quality?

Not at “Original” quality: the JPEG bytes are embedded unchanged. Only the “High” and “Smaller file” options resize and recompress.

How many JPGs can I put in one PDF?

There is no fixed limit. The practical ceiling is your device’s memory; hundreds of photos work on a laptop.

Why is my photo sideways in the PDF?

Some cameras save the picture sideways plus a “rotate me” tag. Use the ⟳ button on the card before converting — what you see in the preview is what goes into the PDF.

Can I convert JPG to PDF on iPhone or Android?

Yes. Open this page in Safari or Chrome, tap “Choose JPG images” to pick from Photos, or “Take a photo” to shoot a document directly.