Back to Engineering Blog
Engineering5 min read•

Why HTTP 307 Temporary Redirects Protect Search Engine Equity Better than 301 or 302

Most shorteners blindly issue HTTP 301 or 302 redirects. Here is why HTTP 307 is the only status code that preserves request methods, prevents aggressive browser caching bugs, and preserves canonical indexing equity.

M

Marcus Vance

Lead Infrastructure Architect

The Status Code Mistake Most Shorteners Make

When you shorten a link, the status code in the HTTP Location header decides everything. It tells Googlebot how to index your page. It tells Chrome whether to cache the redirect forever. And it tells API clients whether to preserve form data.

Most link shorteners still use HTTP 301 or HTTP 302. Both cause subtle, expensive bugs in production.

The Problem with HTTP 301 Permanent Redirects

HTTP 301 tells the browser that the target address will never change again. Ever.

When Chrome or Safari sees a 301, it saves the redirect to local disk cache. The browser will never check your server again.

Here is what happens in real life:

  • You shorten `tlink.bond/deal` to point to `store.com/promo`.
  • A customer clicks on Monday. Their browser caches the 301 redirect locally.
  • On Friday your sale ends. You edit the link destination in your dashboard to `store.com/archive`.
  • The customer clicks the same link on Saturday.
  • The browser skips your server completely. It reads the cached 301 from disk and loads the expired sale.
  • You lost the customer. Even worse, your dashboard shows zero clicks for Saturday because the request never reached your edge node.

    Client Click -> Local Disk Cache (301 Hit) -> Old Expired Page
    (Your server was never queried)

    Why HTTP 302 Breaks Forms and Webhooks

    RFC 1945 originally defined HTTP 302 as a temporary redirect. Web browsers, however, implemented it incorrectly.

    When an old browser gets a 302 response to an HTTP POST request, it automatically converts the next request to a GET. It drops the request body completely.

    If you route webhook events, checkout forms, or API payloads through a 302 redirect, the payload disappears.

    RFC 7231 created HTTP 307 to fix this bug once and for all:

    "The 307 status code indicates that the target resource resides temporarily under a different URI and the user agent MUST NOT change the request method."

    A POST stays a POST. Form data remains intact. Webhooks work reliably.

    How Google Handles HTTP 307 for SEO

    Googlebot treats HTTP 307 redirects with precision:

  • **Passes Canonical Equity:** Googlebot recognizes that your short link is an intermediary. It does not index the short slug as the content authority. It passes PageRank directly to your destination website.
  • **Re-checks on Every Pass:** Because 307 means temporary, search engines re-crawl the short code on every pass. When you change your destination, Google updates its index without delay.
  • **Controlled Edge Cache:** We pair HTTP 307 with a short cache header (`Cache-Control: private, max-age=60`). Repeat visitors get fast redirects under 45ms, while destination edits go live worldwide in 60 seconds.
  • HTTP/1.1 307 Temporary Redirect
    Location: https://example.com/target-destination
    Cache-Control: private, no-transform, max-age=60
    X-Edge-Routing: tlink-stateless-v2

    At TLink, every redirect runs through strict HTTP 307 handlers. Your links stay editable, your payloads stay intact, and your SEO ranking stays clean.

    Tags:#HTTP#SEO#Edge Architecture#Web Standards

    Try TLink Free Today

    Sub-100ms redirects, 50/50 A/B split routing, and lossless vector QR codes. 100% free forever.