Free YouTube Tools
Everything on this page runs in your browser or on our AI, without an account. YouTube descriptions and comments support real formatting: *asterisks* for bold, _underscores_ for italic and -hyphens- for strikethrough. Video titles cap at 100 characters but search results cut them at about 70. The tools below handle the formatting, counting, previewing and writing; the scheduler handles the posting.
Write & format
AI generators
Counters & checks
Calculators
YouTube limits and sizes at a glance
Video titles cap at 100 characters but search results cut them at about 70. Descriptions allow 5,000 characters with the first 157 shown in search. Tags share a 500-character budget, channel descriptions are 1,000, and comments 10,000.
Posting on YouTube in 2026
The description is for search and for viewers who want links. The first 157 characters show in results; chapters, links and credits go below.
YouTube shows the first three hashtags above the title. Add more than 15 and YouTube ignores all of them. Tags are separate from hashtags and live in the upload settings.
YouTube character limits (2026)
| Field | Limit | Note |
|---|---|---|
| Video title | 100 | Under 70 so it is not cut off in search |
| Video description | 5,000 | First 157 characters show in search |
| Channel description | 1,000 | |
| Channel name | 100 | |
| Handle | 30 | |
| Comment | 10,000 | |
| Tags (total) | 500 | Total characters across all tags |
| Community post | 5,000 | |
| Playlist title | 150 |
Formatting support on YouTube
YouTube descriptions and comments support *bold*, _italic_ and -strikethrough- with asterisks, underscores and hyphens. Titles do not, which is why Unicode bold shows up in titles.
Timestamps (0:00) in descriptions become chapters automatically.
YouTube image sizes (2026)
| Placement | Size (px) | Ratio |
|---|---|---|
| Thumbnail | 1280 × 720 | 16:9 |
| Channel banner — Safe area 1546×423 in the centre | 2560 × 1440 | 16:9 |
| Profile photo | 800 × 800 | 1:1 |
| Shorts | 1080 × 1920 | 9:16 |
| Community post image | 1080 × 1080 | 1:1 |
Need one of these sizes? Use the YouTube image resizer.
Hashtags on YouTube
More than 15 hashtags and YouTube ignores all of them; the first three show above the title. Limit: 15. Sweet spot: 3.
Frequently asked questions
Are these YouTube tools free?
Yes. The browser tools have no limits; the AI tools allow ten generations a day without an account.
Can I schedule YouTube posts here?
Every tool has a "Schedule" link that opens Social by InstantDM with your text prefilled: it publishes to YouTube and seven other platforms from one calendar.
Related free tools
Write it here, publish it everywhere
Social by InstantDM schedules to Instagram, Facebook, X, LinkedIn, TikTok, Pinterest, Threads and YouTube from one calendar, with AI captions, previews and an API. Start free — $0 today, cancel anytime.
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