Convert PowerPoint to PNG with sharp text and charts

To convert PPT to PNG, press Select PowerPoint file (or drop a .pptx or .ppt on the tool above), pick a Resolution and press Convert to PNG. Everything your audience would see is saved as PNG images. A file with one slide downloads as a single PNG with the same name, cover.pptx as cover.png. Anything longer downloads as a ZIP named after your file, with the images numbered in order: roadmap.zip held roadmap-p001.png, roadmap-p002.png and onwards.

People save PowerPoint as PNG when a slide has to sit inside something else: a wiki page, a report, a help article or a design file. PNG is lossless, which means every pixel is kept exactly as it was drawn. Small labels, thin lines and flat colour keep clean edges, without the faint blur a JPG adds around them, so PPTX to PNG is the route for text, charts and diagrams.

• Anything hidden is skipped: our test file had five slides, one of them hidden, and gave four PNGs.
• Speaker notes are left out, so each image shows what the audience sees, edge to edge.
• There is no transparency. Where no background colour is set, the image is white, and a coloured background fills the whole picture.
• An older .ppt file works as it is, with no resaving: a .ppt copy of our test file gave the same four PNGs.

The page shows the route as two steps, PPTX to PDF and PDF to PNG, graded Picture-perfect. Your presentation is first laid out as a PDF, one page per slide, and each page is then drawn at the resolution you chose. The images look right down to the pixel, but their words are pixels too.

Resolution, in dots per inch (DPI), sets how many pixels each image gets: 96, 150 or 300 DPI, with 150 as the default. A widescreen (16:9) slide comes out 1281 × 720 pixels at 96 DPI, 2001 × 1125 at 150 and 4001 × 2250 at 300. At 150 DPI an older 4:3 one is 1500 × 1125, and a square one 1125 × 1125.

• 96 DPI suits images seen on a screen at their normal size, such as in a wiki page or a chat.
• 150 DPI suits reports, help articles and design files, with room to zoom in a little.
• 300 DPI is for printing, or for a chart with small labels that people will zoom into.

Text and shapes stay small at every setting, because PNG stores flat colour compactly. A photo does not: ours passed 6 MB at 300 DPI. For a presentation that is mostly photos, convert PowerPoint to JPG instead, which made the same picture 914 KB at 300 DPI.

• Shape: each PNG takes the slide's own shape, so set the slide size in PowerPoint first. Our square test came out 1125 × 1125 pixels at 150 DPI, ready for a square social post.
• Fonts: our server has no Microsoft fonts, so look-alikes stand in and a line break can move. Check any place where text already filled its box.
• Length: up to 100 slides in one file. Our 100-slide test gave a ZIP of 100 PNGs, and at 101 the file was stopped before converting, with a message giving its page count.

Other documents become PNG images the same way: convert Word to PNG for a .docx or .doc, or convert HTML to PNG for a saved web page. Going the other way, convert PNG to PowerPoint to turn a picture back into a slide.