Document to Image

The pixel sizes above follow from simple arithmetic: the page width in inches times the DPI. They describe a standard A4 page; Letter pages and widescreen slides come out slightly different, but in the same proportion. A higher setting never adds detail that the document did not have, but it does stop text and thin lines from breaking up when someone zooms in.

DPI only describes how many pixels are drawn for each inch of the page. A screen ignores the number and shows the pixels it gets, which is why a 150 DPI image looks the same on a phone whether its file says 150 or 72. What changes is the pixel count, and with it the file size and how far someone can zoom before letters break up. A printer does read the value: it uses it to decide how large the picture should come out on paper, so a 300 DPI page prints at its original size with clean edges.

The output format matters as much as the resolution. Document pages are mostly flat color, sharp text and thin lines, which is exactly what lossy compression handles worst. PNG keeps every letter crisp and is the best choice for pages with small print, tables, charts and slides with large plain areas. JPG gives a smaller file and is fine for pages that are mostly photos, or when a form only accepts JPG; keep Quality at the default of 85 or higher so the edges of letters stay clean. WebP suits pictures you will put on your own website. GIF turns all pages into one animated image that steps through them, which works for a short slide preview in a chat or an email.

Whichever format you pick, it has to open on the other side. The table below shows which current browsers display each still-image format.

One caution about GIF: the format holds at most 256 colors per frame. Text, charts and flat slide designs survive that well, but photos inside the pages turn grainy. If the deck is photo-heavy and you still want motion, a short video made from the slides will look better than a GIF, and a static PNG of each slide is the safest option of all.

Turning pages into images is useful wherever a document format is not welcome. Social networks and chat apps show a picture instantly but make people download a DOCX. Website builders and slide tools let you drop an image anywhere on a page. Some upload portals, product listings and print services accept only JPG or PNG. In each case, an image of the page carries the layout without asking the reader to have Word or PowerPoint.

The trade-off is that an image is a dead end for editing. Words cannot be selected, links stop working, and a screen reader cannot read the content aloud. When you share page images publicly, add the key text in the post or as alt text. When people need to read, search or print a full document, a PDF made with Convert to PDF is usually the better format, and the rest of the document tools cover other cases.

Results are named after the source file with a page number added, so a ten-slide deck gives ten files that sort in the right order. With Download as one ZIP switched on, all of them arrive in one archive; switch it off when you only need a few pages and want to save them one by one.

Spreadsheets need a little preparation more often than other files. A sheet with hundreds of rows becomes many page images, and the split follows the print layout stored in the workbook. Setting a print area, choosing landscape and hiding helper columns in Excel or LibreOffice before you upload gives far tidier results than converting the raw sheet. For data you want to reuse rather than show, the Data Converter page is the better tool.