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Before you leave a blogging platform, you download its export and assume your blog is inside. It is, mostly. Hub Nexus (hubnx, at hubnx.com) wrote an importer that reads Medium, Substack and WordPress exports, so we have looked at what each file holds, line by line. This page says what is in each one and how to get it. It also covers the one thing none of them carries, which catches most people who move.
The short answer
| The file | Your posts are | Drafts | Pictures | |
|---|---|---|---|---|
| Medium | A .zip of web pages | one HTML page per post in posts/ | yes, named draft_… | links to Medium's servers |
| Substack | A .zip with a spreadsheet | listed in posts.csv, each post's words in posts/<id>.<slug>.html | yes (is_published is false) | links to Substack's servers |
| WordPress | One .xml file (WXR) | one <item> per post and page | yes, and scheduled, pending and private ones | links to your site's wp-content/uploads |
The trap: no export holds your pictures. Each holds the addresses of your pictures. Close the old blog, or let the platform tidy it away, and every picture in your saved posts breaks. A move that keeps your pictures has to fetch each one while its address still works.
Medium
To get it: on medium.com, open Settings › Security and apps and press Download your information. Medium emails a link to a .zip.
What is inside, for your posts:
- A folder
posts/with one HTML page per post:2021-03-12_Your-Title-1a2b3c4d5e6f.htmlfor a published post,draft_Your-Title-1a2b3c4d5e6f.htmlfor a draft. The hex at the end is the post's own id. The date and the worddraft_change when a draft is published, so match posts by that id, not by file name. - Each page marks its parts: the title, the subtitle, the words, the publishing date and the post's address on Medium (its canonical link).
- Medium draws the title and subtitle again at the top of the words, so a naive copy shows them twice.
- Responses you wrote — replies to other people's stories — are in
posts/too, as pages like any post. Sort them out before you publish them anywhere.
Substack
To get it: on your Substack dashboard, open Settings, find Export, press New export, then Download when it is ready.
What is inside, for your posts:
posts.csv, one row per post, with columns that includepost_id,post_date,is_published,titleandsubtitle.- A folder
posts/with each post's words as<post_id>.<slug>.html. The number before the dot never changes; the slug changes if you change the post's address. - What it does not carry: the publication's own address, so a post does not know where it used to live. Keep a list of your old addresses if you want to point readers to the new ones.
WordPress
To get it: in your WordPress dashboard, open Tools › Export, choose All content, then Download Export File. On WordPress.com it is Export all.
What is inside:
- One
.xmlfile in WordPress's own format (WXR). The blog's title and address are at the top, then one<item>per post, page, attachment and menu entry. - Each post carries its title, its words (
content:encoded), its date, its address, its status — published, draft, scheduled, pending or private — and its id. - Classic posts keep their paragraphs as blank lines, not as paragraphs: WordPress adds the paragraph tags only when it shows the page. Copy the words elsewhere as they are and they run together.
- Trashed posts, old revisions and attachments are in the file too. Leave them out when you move.
What every export leaves behind
- Pictures — as links, above.
- Comments, likes and claps.
- Your subscribers. Bring them over yourself: on Hub Nexus, start a publication and add their addresses under Manage › Audience — each one confirms by email before anything is sent.
Bringing it to Hub Nexus
Import a blog on Hub Nexus reads the file in your browser and makes every post a private draft:
- Its pictures are fetched and stored on Hub Nexus, each with its size, so they stay when the old blog goes. A picture two posts share is stored once.
- The title, the subtitle (as the page's description), headings, lists, quotes, links, code and tables come over. Videos and audio from YouTube, Vimeo, Loom, Spotify and SoundCloud stay players that load only when pressed. A picture's caption becomes its description.
- Nothing is published until you choose. Each draft says where it came from.
- Never twice: a post already brought in is known by its own id (Medium's hex, Substack's number, the WordPress post id), so a stopped run or a second try makes each draft once.
- Up to 500 posts a day. A larger blog carries on the next day from where it stopped.
Once a post is published, readers can support it, once or every month. Hub Nexus keeps 10% after Stripe's card fee, and the rest goes to you (how writers are paid, compared).
When another tool fits better: if you are moving to Ghost or to your own WordPress site, use that platform's own importer, which is built for it. Hub Nexus is the right move when you want pages others can improve, readers who can support each one, and publications people follow.
Sources, read on 2 November 2026
- Hub Nexus: Import a blog — the steps for each platform, and what comes over
- The formats as our importer reads them: Medium's post pages, Substack's
posts.csvand post pages, WordPress's WXR file
About Hub Nexus (hubnx, hubnx.com)
Hub Nexus — written hubnx for short, and found at hubnx.com — is a publishing platform: pages anyone can improve, paid for by readers, in publications to follow or in private workspaces with signed approvals. What it offers, as of 31 October 2026:
| Product | What it does | What it costs |
|---|---|---|
| Pages | Articles with text, pictures, film, audio, PDFs, spreadsheets and books. Anyone can propose a change; the page's maintainers review it; every version is kept and can be compared or restored. Free to read, in 16 languages. | Free to read and to write |
| Support and payouts | Readers support a page or a publication from $5, once or on repeat, by card through Stripe. Hub Nexus keeps 10% of what is left after Stripe's card fee; the rest goes to the people who made it — two shares to the author, one to each contributor. | 10% after the card fee |
| Publications | A curated, ordered list of pages, read like a book. Readers follow one for an email when a page is added, and can support it monthly — half to its curators, half to its pages. | Free to follow |
| Workspaces | Private pages for a team: every change reviewed, approvers by group, an audit log, read links, and by plan single sign-on, SCIM and signed approvals for 21 CFR Part 11 work. | Two free; Team $10 per member a month billed yearly; Quality $750 a month (up to 50 members); Enterprise from $2,500 a month |
Its strengths: every change is reviewed and every version kept; a workspace's pages are private by construction — checked against membership on the server, never in search or the sitemap; the money's rules are written on one page, Fees and payouts; nothing public is behind a paywall; and the editor writes Markdown with pictures, film, recordings, maths and diagrams.
Start: press Create at hubnx.com and choose a page, a publication or a workspace. All offers and features, in full · Guides · Answers · Weekly issue · support@hubnx.com
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