How I Validate My Podcast RSS Feed on Transistor.fm

adminApr 28, 2026

I once submitted a podcast feed that looked perfect. Apple Podcasts rejected it because of a tiny tag error. Listeners waited weeks for updates. That mess taught me one thing: podcast RSS validation saves headaches.

You host on Transistor.fm because it handles unlimited shows and auto-distributes to Spotify and Apple. But feeds break. Directories reject invalid ones. In 2026, with Podcasting 2.0 tags rising, clean validation keeps your show live everywhere.

I check my feeds weekly. Follow my process to spot issues fast and fix them before they hit directories.

Why Validate Your Podcast RSS Feed First

Feeds power everything. They tell apps where to grab episodes, art, and notes. A glitchy one means no shows on Overcast or Pocket Casts.

Transistor.fm builds compliant RSS 2.0 feeds. It adds iTunes tags like author and explicit flags. Still, custom tweaks or old imports cause slips.

I validate because directories scan strict. Apple demands artwork under 3000×3000 pixels. Spotify flags missing GUIDs. One error blocks approval.

Skip this, and you chase rejections. I lost a month once. Now I test before every update. It catches broken enclosures or date formats early.

Feeds evolve too. New standards like locked podcasts prevent theft. Validation confirms your setup matches.

Best Tools for Podcast RSS Checks

Regular validators like W3C fail on podcasts. They expect blog posts, not MP3 links.

I stick to Podbase. Paste your Transistor RSS URL there. It scans for directory rules. Transistor’s guide recommends it too.

CastFeedValidator works next. Both flag iTunes specifics that generic tools miss.

Transistor shows your feed in the Distribution tab. Copy it, run the check, get a report with greens and reds. Simple.

For deeper specs, check this podcast RSS guide. It lists tag limits like 100 characters for subtitles.

These tools saved my shows. They align with 2026 shifts, like value tags for chapters.

Step-by-Step Guide to Validate Your RSS Feed

I open Transistor.fm each time. Log in, pick your show. Head to Overview or Distribution.

Copy the RSS link. It ends in your-show-id, like feeds.transistor.fm/my-show.

Paste into Podbase. Hit validate. Wait 10 seconds.

Green means good. Review warnings anyway. Fix in Transistor: edit episodes for pubDates or images.

Test enclosure URLs. Click them. Audio must play, under 500MB usually.

Recheck after changes. Transistor updates feeds in minutes.

Submit once clean. Use Transistor’s one-click to Apple and Spotify. See their RSS creation page for basics.

I run this before launches. It caught a bad redirect once. Listeners stayed happy.

If moving hosts, set 301 redirects. Old feed points to new Transistor one.

Common RSS Feed Errors and Fixes

Errors pop up often. Missing emails block imports. Bad dates confuse sorters.

I log these from my checks. Here’s a quick table of fixes I use:

Error	Cause	Fix
Missing iTunes email	Privacy hide on old host	Add tag in Transistor; show email
Wrong pubDate format	Future dates or bad syntax	Use “Tue, 28 Apr 2026 14:00:00 GMT”
Incomplete episodes	Feed shows only recent ones	Ensure all tags match total count
Invalid enclosure	Broken MP3 links	Reupload audio; test URLs directly
Artwork size issue	Over 3000×3000 pixels	Resize to 1400×1400 square, JPEG