Is my PNG uploaded to a server?

No. The PDF is built entirely in your browser: your PNG never leaves your device, and there's no queue and no account.

Does image quality change?

Transparency-carrying PNGs are embedded losslessly, so every pixel — and the transparency itself — survives onto the page.

What size is the PDF page?

Your choice: fitted exactly to the image (best on screen), or A4 with the image centered inside a margin (best for printing and form uploads).

PNG to PDF

Convert PNG to PDF, free and 100% in your browser. No upload, no signup — fit the page to the image or center it on A4.

How to convert an image to PDF

Drop or pick your PNG image.
Choose the page: fitted to the image, or centered on A4.
Convert and save the PDF — all on your device.

About image to PDF

PNG is a lossless format with an alpha channel, pixel-perfect for logos, screenshots and line art. As a PDF its transparency survives onto the page, embedded losslessly — logos and screenshots stay pixel-crisp.

OptImg builds the PDF entirely on your device: nothing is uploaded, sideways camera shots come out upright, and you choose the page — shrink-wrapped to the image or centered on A4 for printing.

Frequently asked questions

Is my PNG uploaded to a server?: No. The PDF is built entirely in your browser: your PNG never leaves your device, and there's no queue and no account.
Does image quality change?: Transparency-carrying PNGs are embedded losslessly, so every pixel — and the transparency itself — survives onto the page.
What size is the PDF page?: Your choice: fitted exactly to the image (best on screen), or A4 with the image centered inside a margin (best for printing and form uploads).