Link previews and dead-link checks: know what's behind a link before you click

Every link in a Thpaste paste gets a preview card with the page title, a broken-link warning when it looks dead, and file counts and sizes for popular storage hosts — all privacy-friendly. Here's how it works.

Thpaste team · 3 min read
Link previews that catch dead links
On this page
  1. What a preview card shows
  2. Dead-link detection
  3. File counts and sizes for storage links
  4. Private by design
  5. Works with every kind of paste
  6. FAQ

A list of bare links is a leap of faith. Is this the right page? Is the download still up? Is that folder 3 files or 300? Thpaste answers those questions before anyone clicks: under every paste, each link gets its own preview card — and the card tells readers when a link looks dead.

30links per paste get a preview card
6 hbetween health checks for working links
30 minbefore a broken link is checked again
0requests from readers' browsers to the linked sites

What a preview card shows

Link previews under a paste
Three links, three cards — and the last one is flagged as broken
Part of the cardWhere it comes from
Site name and iconThe linked site's own name and favicon
Title and descriptionThe page's title and summary, the same ones social apps use
Preview imageThe page's share image, when it has one
⚠️ Link appears brokenThe site answered "not found" or "gone" (HTTP 404 or 410)
AddressThe link itself, so readers can see exactly where it goes
Report brokenLets readers flag a link that doesn't work for them

Links die all the time: files get removed, folders expire, pages move. When Thpaste checks a link and the site answers not found or gone, the card turns red with Link appears broken.

  1. 1
    Checked when the paste is viewed

    The first reader triggers a check; the result is remembered so the next readers get it instantly.

  2. 2
    Re-checked regularly

    Working links are re-checked every 6 hours, broken or unclear ones every 30 minutes — so a link that comes back to life is noticed quickly.

  3. 3
    Reported by readers

    If a link is wrong in a way a robot can't see, readers can press Report broken and the team takes a look.

For people who share download links

Open your own pastes now and then: a red card is your cue to re-upload the file and edit the paste with the new link. Your paste's address stays the same, so everyone who has it gets the fixed version.

For popular file-hosting services — including Gofile, Pixeldrain and MEGA — the card goes further and shows what's inside: the number of files, how many are images or videos, and the total size. Readers know whether they're about to download a single document or a 4 GB folder.

Card saysIt means
📁 12 files · 1.4 GBA folder with twelve files, 1.4 GB in total
🖼 40Forty of them are pictures
🎬 3Three are videos

Private by design

Showing previews could have meant every reader's browser contacting every linked website — leaking their IP address to sites they never chose to visit. Thpaste does it differently:

Fetched by Thpaste, not your browser

The server reads the page title and summary, so readers stay anonymous until they actually click.

Images passed through

Preview images and icons are shown through Thpaste, never loaded straight from the other site.

Guarded fetching

Only public web addresses are checked — never private networks — and checks are rate-limited.

Works with every kind of paste

Previews appear under plain text, Markdown, code and rich text pastes alike. In rich text pastes a link might be a word or a button — the preview still shows the real address it points to.

FAQ

Can I turn previews off?
Not per paste right now. They're informational only — readers still decide whether to click.

Why does a working link say it's broken?
Some sites answer "not found" to automated checks. If the link works for you, readers will still be able to open it, and the next check may clear the warning.

Do previews slow the paste down?
No. The paste loads first; the cards appear underneath as their checks finish.

Share links people can trust

Paste your links and every one gets a preview card and a health check.

Create a paste

Share something now

Rich text, Markdown or code — get a short link in seconds. No account needed.

Create a paste

Keep reading

Guide · 5 min read

Everything Thpaste can do: the complete feature tour

A guided, screenshot-by-screenshot tour of every Thpaste feature — rich text, Markdown and code pastes, private sharing, translation, link previews, analytics, profiles, Creator Mode and the API.