Convert PUB to HTML Online, Free and Unlimited
Need your Microsoft Publisher content on the web instead of on paper? PubOpener reads the real .pub file structure directly in your browser and pulls out its text and embedded images into clean HTML you can drop into a site or CMS. With Publisher itself losing support on 13 October 2026, this is a free way to keep .pub content usable long after the app is gone — note that this extracts and reflows content, it does not reproduce Publisher's exact print layout.
No signup, no limits, no install. Your file never leaves this browser tab — no upload, no server.
Verify: how it works ↗
HTML is the better export when a .pub file needs to live on a website rather than in a printer tray. Unlike a PDF, an HTML file is text you can paste into a CMS, style with your site's own CSS, or hand to a developer to drop into a page template — no flattened image of a page, just headings, paragraphs, and image tags you can edit directly.
PubOpener parses the .pub file's internal structure — text frames, embedded pictures, and their reading order — and writes them out as plain HTML tags. Multi-column flyers and newsletters get reflowed into a single readable column rather than an exact copy of Publisher's print grid, so always skim the result and adjust spacing or image placement before publishing.
Once you have the HTML, open it in any code or text editor to fix copy, swap in new images, or wrap it in your own template — no Microsoft Publisher installation required at any point. This makes it a practical stopgap for anyone migrating old .pub newsletters, flyers, or brochures into a blog post, intranet page, or static site before Publisher stops receiving support.
Everything happens in your browser tab: the .pub file is read locally and the HTML is generated on your machine, so nothing is uploaded to a server and there is no file size limit, watermark, or sign-up wall. That also means it keeps working after Microsoft Publisher's 13 October 2026 end-of-support date, since it never depended on Publisher being installed in the first place.
Steps
- Open your .pub fileGo to PubOpener and drag your .pub file into the browser window, or click to browse and select it from your computer.
- Choose HTML as the export formatOnce PubOpener parses the file's text and images, select HTML from the export options to generate a web-ready version of the content.
- Download or copy the HTMLDownload the generated HTML file, or copy its markup directly, and paste or upload it into your website, CMS, or code editor.
Common questions
Is this PUB to HTML converter really free and unlimited?
Yes. PubOpener converts as many .pub files as you want, with no per-file limit, no watermark, and no account required — it always has been and always will be free.
Is my .pub file uploaded anywhere?
No. The file is read and converted entirely inside your browser tab. It is never sent to a server, which also means it works fine on a slow or offline connection once the page has loaded.
Do I need Microsoft Publisher installed to convert to HTML?
No. PubOpener parses the .pub file format itself, so you can open and convert Publisher files on Windows, Mac, Chromebook, or Linux without Publisher — or after it stops receiving support on 13 October 2026.
Will the HTML look exactly like my Publisher layout?
Not pixel-for-pixel. Publisher's print-oriented columns, text boxes, and precise positioning don't map cleanly to HTML, so PubOpener extracts the text and images and reflows them into a simpler, single-column HTML structure that you can then style yourself.
Can I edit the HTML after it's generated?
Yes — that's the point of exporting to HTML rather than PDF or PNG. Open the output in any text or code editor to fix wording, swap images, or wrap it in your own site's template.
Should I convert to HTML or PDF instead?
Choose HTML if the content needs to live on a webpage or be edited as text; choose PDF if you need a fixed, print-accurate copy of the original layout. PubOpener supports both from the same .pub file.