Publisher to WebM Converter

Convert Publisher to WebM: What This Tutorial Covers

This walk-through is for anyone who needs a Microsoft Publisher (.pub) page turned into a .webm video clip — usually to drop a flyer, poster, or title slate into an HTML5 web-video workflow. Be clear up front about what comes out: a .pub is a document and a .webm is a video container, so this conversion renders the publication to a still picture and holds that frame for a duration you choose. The result has no motion and no audio — it is a rendered page wrapped in a WebM, not an animation. By the end you will know which settings matter, why the clip does not move, and when WebM is the wrong target and Publisher to PDF is what you actually want.

How to Convert Publisher to WebM

1. Upload Your Publisher File: Drag and drop your .pub file onto the page or click "+ Add Files" to browse. You can queue several Publisher files and convert them in one batch.
2. Set the Image Duration: Open Advanced Options and choose "Image Duration" (the default is 5 seconds per frame) — this is how long the rendered page is held on screen, from a single frame (1/60s) up to 10 seconds.
3. Choose Background Color and Resolution (Optional): Use "Background Color" (default Black) to fill any area around the page that does not match the video frame's aspect ratio, and set "Video resolution" with "Keep original" or a fixed preset.
4. Convert and Download: Click "Convert" and download your WebM. No sign-up, no watermark, no Publisher license required.

Walk-through: Duration, Merge, and What the Clip Actually Contains

This tool turns a rendered page into video by repeating one frame, so the output never moves on its own — there is nothing in a static layout to animate. Two controls decide what you get:

• Image Duration sets the clip length for one page. Picking "5 seconds per frame" produces a 5-second WebM showing the rendered page the entire time. A very short value like 1/60s yields essentially a one-frame clip — useful when something downstream just needs a WebM wrapper rather than a watchable length.
• Merge strategy decides what happens with multiple pages or files. Leave it on "Video per image" and each rendered page becomes its own separate WebM. Switch to "Merge images" and the pages are joined into a single clip, each shown for the Image Duration you set, in order. This is a plain fixed-duration slideshow — frames appear one after another with no cross-fades, pans, or transitions.

The audio track is intentionally empty. A Publisher page carries no sound, so the WebM is silent by design; there is no music or voice-over option on this page. The video codec defaults to VP9, with VP8 and AV1 also selectable under the codec option — all three are open, royalty-free codecs the WebM container is built around. If you need motion, narration, or transitions, that is editing work for a video editor, not a one-page format conversion.

A Note on Fidelity

.pub is Microsoft Publisher's proprietary desktop-publishing format, and it is notoriously hard for non-Microsoft software to reproduce exactly. This conversion first renders the publication to pixels using an open-source engine (the Document Liberation project's Publisher import, the same family LibreOffice uses), then wraps that rendered image in a WebM. Straightforward single-page layouts — a flyer, poster, or certificate — render cleanly, but documents with unusual fonts, heavy layering, or assets linked from outside the file can shift or substitute elements. Spot-check anything complex. For a print-exact copy, exporting from Microsoft Publisher itself, while you still have access, remains the most accurate route.

Common Errors and How to Fix Them

• "The video doesn't move when I play it" — Correct, and expected. A rendered Publisher page is one still frame; holding it for a duration is the most a still-to-video conversion can do. Real motion needs source frames that already differ from one another.
• "There's no sound" — Also expected. A publication has no audio, so the output WebM is silent. Add an audio track in a video editor afterward if you need one.
• "The page is letterboxed with black bars" — The page's aspect ratio does not match the chosen video resolution, so the empty area is filled with the "Background Color". Set "Video resolution" to "Keep original" to match the rendered page, or change "Background Color" if black is not what you want behind it.
• "Fonts or spacing look off" — A .pub references fonts that may not be embedded; if the renderer cannot find one, it substitutes a close match, which can shift text. Where possible, embed fonts when saving from Publisher, or convert to PDF to better preserve the layout.
• "My multi-page publication only gave me the first page" — A single WebM holds one rendered frame, so multi-page input does not become a page-flipping video. If you need every page kept together, convert to PDF instead.

When This Doesn't Work

For most people, a .pub does not actually need to become a video — and if your goal is just to view, share, or archive the document, WebM is the wrong target. The right call is almost always Publisher to PDF: it keeps every page in one file with selectable text, and it is the format Microsoft itself recommends for viewing publications before Publisher's October 2026 retirement. WebM only makes sense when something genuinely needs a video file — an HTML5 <video> slate, a flyer or poster shown as a fixed-length title card in a web-video pipeline, or a placeholder clip. Even then, if the clip has to play on arbitrary devices and older apps rather than just modern browsers, Publisher to MP4 is the more universally compatible video target. And for files that resist clean rendering — password-protected publications, very old Publisher versions, or layouts that depend on fonts and images stored outside the .pub — exporting directly from Microsoft Publisher (or a perpetual/Office LTSC install) gives the most accurate output.

Frequently Asked Questions

Why is my Publisher to WebM result a still frame with no movement?

Because a rendered Publisher page is a single image, and there is nothing in a static layout to animate. This conversion builds a video by holding that one frame for the Image Duration you pick, so the clip plays but never changes. Motion in a video comes from a sequence of differing frames; one rendered page, by definition, has only one. If you upload several files and turn on "Merge images", you get a basic slideshow where each page appears in turn — still no in-frame motion or transitions, just one picture after another.

Does the WebM have any audio?

No. A Publisher page stores layout and graphics, not sound, so the output WebM is silent by design and there is no music or voice-over control on this page. WebM as a container can carry Opus or Vorbis audio, but a rendered-document source provides none, so the audio track is left empty. If you need sound, add it in a video editor after converting.

What video codec does the WebM use, and will it play everywhere?

The clip is encoded with one of WebM's open video codecs — VP9 by default, with VP8 and AV1 also selectable under the codec option. WebM was introduced by Google in 2010 as a royalty-free, open container based on Matroska, and it plays natively in current Chrome, Firefox, Edge, and Safari (which added WebM support on macOS in 2021 and iOS shortly after). Older desktop media players may need a codec pack or may not support WebM at all — if you need to hand the file to an arbitrary device or app, Publisher to MP4 is more universally compatible.

How faithful is the conversion for a complex Publisher layout?

In our testing, simple single-page flyers, posters, and certificates render cleanly into the WebM frame, while documents with unusual fonts, heavy layering, or assets linked from outside the file are more likely to shift or substitute elements. .pub is Microsoft's proprietary format, and the page is reconstructed with an open-source engine (the Document Liberation project's Publisher import, the same family LibreOffice uses), which cannot reproduce every complex layout perfectly. Spot-check complicated files, and for a print-exact copy export from Publisher itself where you still can.

Should I convert my .pub files now that Microsoft is retiring Publisher?

For keeping the document itself, yes — but to PDF, not WebM. Microsoft has confirmed that Publisher reaches end of support on October 1, 2026; after that date Microsoft 365 subscribers will no longer be able to open or edit .pub files in Publisher (perpetual and Office LTSC installs can still run the app), and Microsoft recommends converting publications beforehand — PDF for viewing, Word for editing. Use Publisher to PDF to preserve a viewable, all-pages copy; reach for WebM only when you specifically need a video clip of a page for a web workflow.

Is the conversion private, and how long are my files kept?

Your file is uploaded over an encrypted connection, rendered and converted on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public. You can convert standard .pub documents without installing any software; for very large publications, the practical limit is upload time rather than the page itself.