Free creator tool
YouTube Title Checker
Your title preview appears here
Channel name · 1.2M views · 3 days ago
Your title preview appears here
Channel name · 1.2M views · 3 days ago
Your title preview appears here
Channel name · 1.2M views · 3 days ago
Your title preview appears here
Channel name · 1.2M views · 3 days ago
Title history
Titles you save appear here so you can compare candidates side by side.
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No card until you publish.
Why people use it
- See four real YouTube placements at once — desktop search, mobile feed, the sidebar, and Shorts — instead of one generic truncation bar.
- Truncation is measured on rendered pixel width with a canvas, the same thing YouTube itself truncates on, not a character-count guess.
- Upload the actual thumbnail and judge the title next to the image it ships with, at YouTube’s real thumbnail dimensions.
- Keep a running history of title candidates so you can compare options side by side before you upload.
Suggested flow
- 01
Type the title
Enter a candidate title and watch YouTube’s 100-character limit and pixel truncation update live.
- 02
Add the thumbnail
Upload the thumbnail you plan to ship so the previews show the title against the real image.
- 03
Compare placements
Check all four surfaces for where the title gets cut, then save strong candidates to compare later.
About this tool
Check a YouTube title before it gets cut off
YouTube truncates titles by rendered pixel width, and that cutoff lands in a different place on search results, the mobile feed, the sidebar, and Shorts. This tool measures each placement with a real canvas context so you can see exactly where a title loses its hook, judged next to the thumbnail you're actually shipping.
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Questions
Frequently asked questions Everything the first evaluation usually needs.
- What if I'm already on Buffer / Pallyy / Publer?
Keep them. Run Postonus side-by-side for 30 days. Put your 3 best posts into a Growth Workflow. If it isn't earning its keep, cancel us — not them.
- Does the AI write my posts?
No. You write the post. Postonus's AI re-fits your draft into each platform's native shape — character limits, tone, hashtag norms. You review every variant before it publishes. Voice profile keeps it sounding like you.
- Which platforms do you support?
Fourteen: Instagram, TikTok, YouTube, LinkedIn, Facebook, X, Threads, Pinterest, Bluesky, Reddit, Telegram, Discord, Google Business Profile, and Tumblr. WhatsApp Groups support is in beta.
- How does the free workspace and the 14-day trial work?
Sign up with no card and you get a free workspace: up to 3 connected channels, unlimited writing, and dated drafts on the calendar. Scheduling and publishing need a card. Adding one starts a 14-day trial on the plan you pick — nothing is charged until day 15, and your drafts are already there waiting.
- Can I import from another tool?
Yes. Bulk CSV import handles up to 50 posts per file (multiple files OK). Direct-from-Buffer import is on the Q4 roadmap.
- What happens if a post fails to publish?
Workers retry with exponential backoff. Failures show up in the Activity Feed with one-click retry. We email you only for unrecoverable failures (e.g. revoked token).