YouTube Title & Description Length Validator

About YouTube Title Validator

Check your YouTube titles and descriptions against practical character limits. Preview how your snippet appears in desktop and mobile search results before publishing.

Avoid truncation at the most common breakpoints. Keep core keywords visible across all devices with real-time length feedback.

Monitor description length and hashtag count to keep metadata clean, readable, and platform-friendly.

YouTube title and description limits explained

YouTube imposes strict limits on every text field in video metadata:

• Title:100 chars max. ~70 visible on desktop, ~55 on mobile. Target 50–60 chars for full visibility.
• Title:5,000 chars max. First 157 appear in snippets. Place keywords and links within this window.
• Hashtags:Max 15. Beyond that, YouTube ignores all hashtags. 3–5 well-chosen hashtags perform best.
• Tags:500 chars total across all tags. No per-tag limit, but combined total can't exceed 500.
• End screen:Can only be added in the last 20 seconds of a video.

This validator shows live desktop and mobile previews, so you see exactly where truncation happens before you hit publish.

Why Titles Get Cut Off

YouTube truncates by pixel width, not character count. Wide characters (caps, diacritics, CJK) truncate sooner. A 55-character headline in all caps may show only 35 on mobile.

Paste your title into the validator and check both Desktop and Mobile previews. If either shows an ellipsis (...), shorten or replace wide characters.

This 30-second check prevents one of the most common YouTube SEO mistakes — a truncated title that buries your primary keyword on mobile devices.

Supported Input Formats for YouTube Metadata

Accepts plain text titles (up to 100 chars) and descriptions (up to 5,000 chars). Analyzes in real time.

Hashtags starting with # are detected and counted. Warning appears when exceeding YouTube’s 15-tag limit.

Input: Plain text titles (100 chars), descriptions (5,000 chars), hashtags (15 max), Unicode text.

Common YouTube Validator Use Cases

Common uses for the YouTube metadata validator:

Pre-Publish headline Optimization

Creators paste draft titles to check truncation before publishing. Desktop and mobile previews show exact cut-off points.

Description Length Management

Descriptions can reach 5,000 chars, but only the first 157 appear in snippets. Ensure keywords and links fit this window.

Hashtag Compliance Checking

YouTube ignores all hashtags beyond 15. validator warns before publishing prevents accidental suppression.

Mobile vs Desktop Preview Comparison

Over 70% of YouTube views come from mobile. side-by-side preview reveals when desktop-optimized titles get truncated on phones.

Multilingual Metadata Validation

Non-Latin scripts (Arabic, Chinese, Japanese) have wider glyphs causing earlier truncation. validator shows actual cut-off for any script.

Team Workflow Quality Control

Media teams use the validator as a quality gate before publishing client videos — verify counts, hashtags, and snippet appearance.