Free tools

Free tools for posting everywhere

Small tools for the jobs that come up when one video goes to several platforms. They work right away, in your browser, with no sign-up and nothing uploaded.

Character counterPaste a caption and see it counted on all seven platforms at once, the way each app counts (links and emoji on X, bytes on YouTube).Caption fitterOne caption in, a version for each platform out: shortened at a sentence, link kept, hashtags trimmed to each limit.Video size checkerPick a video to check its shape, size, length and file size for Reels, TikTok, Shorts and more, with safe-zone overlays. It never leaves your device.Best time to post calculatorPick your platforms and where your audience lives, and see the next good posting times in their time and yours.

Why these tools

Every platform has its own limits: 280 characters on X, 500 on Threads, five hashtags on Instagram, three minutes for a Short. They change, and the help pages that list them often disagree. These tools read from one table of limits, where every number links to the platform’s own documentation and carries the date we last checked it. The same table drives Octoque’s composer.

The limits at a glance

Checked 14 October 2026
Platform	Caption	Hashtags	Vertical video length
Instagram	2,200	5	Reels: up to 15 min
TikTok	2,200	No set limit	Video: up to 10 min
YouTube	5,000 bytes	60	Shorts: up to 3 min
LinkedIn	3,000	No set limit	Feed video: up to 15 min
X	280	No set limit	Video: up to 2 min 20 s
Facebook	63,206	No set limit	Reels: up to 1 min 30 s
Threads	500	1	Video: up to 5 min

Full details and sources on the character counter and video checker pages.

Questions people ask

Are the tools really free?

Yes. No account, no limit on use, no watermark. They run in your browser, so they cost us nothing to run.

Do you keep what I paste or upload?

No. Captions and videos stay in your browser. Nothing is sent to Octoque.

Do they use AI?

No. They follow the platforms’ published rules, so the same input always gives the same answer.

How current are the limits?

Every number is checked against the platforms’ own pages at least every three months, and the check date is on each page.

Platforms Octoque posts toBest time to postStarting hours for every platform Cross-postingOne video to every platform Captions per platformHow the composer handles limits

Your next post could go out at golden hour tonight.

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