PNG is the image format for pages that are mostly text, lines and flat colour: a flyer, a menu, a certificate, a newsletter page you want to post online or drop into a slide. This page opens the converter with PNG on, PDF off and 150 DPI. You get one PNG for each page.
- Output
- One PNG per page
- Resolution
- 150 DPI, or 300 DPI for print
- Compression
- Lossless
- Background
- White, not transparent
This page opens the converter with PNG, 150 DPI. Checked: September 2026.
PNG or JPG?
PNG is lossless: every pixel is stored exactly, so the edges of letters and thin rules stay crisp. JPG discards detail it expects you not to notice, which suits photographs and shows up around sharp black text on white as a faint grey haze. For a page that is mostly type, PNG looks cleaner and usually stays small anyway, because large areas of one colour compress well. For a page full of photographs the PNG can be several times the size of the JPG, and there the JPG is the better choice.
PNG does not bring transparency here. Pages are rendered the way Publisher would print them, on a white sheet, so the background of every image is solid white. If you need a logo on a transparent background, take it from the original artwork, not from the page.
150 or 300 DPI
DPI sets how many pixels each inch of the page gets. At 150 DPI an A4 page is about 1240 × 1754 pixels and a US Letter page 1275 × 1650: plenty for a screen, an email, a web page or a slide. At 300 DPI the same pages are about 2480 × 3508 and 2550 × 3300 pixels. That is four times the pixels, so the files are several times larger and a big folder takes longer to download.
Choose 300 DPI when the image will be printed, or when small print has to stay readable after zooming in. Six-point text, the size of a footnote, is only about 12 pixels tall at 150 DPI: fine on screen, soft when enlarged.
What arrives
Every page is its own file, numbered in page order: flyer_p001.png, flyer_p002.png and so on, in the same folders as the original .pub files. A PNG is a picture, so its text cannot be searched or edited. If you need that as well, add PDF to the same job; it still counts as one use per .pub file.
How to do it
- 1Drop .pub files, a folder or a ZIP below. PNG and 150 DPI are already set.
- 2Check page 1 of each file in the free preview.
- 3Switch to 300 DPI if the pages will be printed, then convert.
- 4Download the ZIP: one numbered PNG per page, in your folders.
Known pitfalls
- Expecting a transparent PNG: the page background is white.
- Big jobs at 300 DPI: a 24-page newsletter is 24 images per file, each with four times the pixels of the 150 DPI version.
- Fonts: the same replacement as for PDF applies. Same-width twins keep every line break; other fonts can reflow, and the report says which.
- Linked text boxes can repeat the story in each box; the report flags those files.
Questions
Can the PNG have a transparent background?
No. Each page is rendered on white, as it would print. Transparency has to come from the original artwork.
Which DPI for a website or social media?
150 DPI. An A4 page at 150 DPI is already about 1240 pixels wide, more than most posts and web layouts display.
Why is my PNG larger than expected?
Photographs. PNG stores every pixel exactly, which is expensive for photos. Convert photo-heavy pages to JPG instead.
Can I edit the text in the PNG?
No, it is a picture. For editable text, convert to ODG and open it in LibreOffice Draw.
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