Free creator tool
Social Character Counter
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Postonus Pro
Loved this tool? Stop copying and pasting to schedule.
Connect 14+ channels (including Bluesky, Threads, and Reddit) in one dashboard. Schedule your content once, let Postonus auto-repurpose it native to every network.
No card until you publish.
Why people use it
- Check length against every platform Postonus publishes to, from X and LinkedIn to Instagram captions, TikTok, YouTube, and Pinterest — not just a handful.
- Counts links the way X actually counts them: every URL costs a flat 23 characters, however long it really is, instead of penalizing you for a long link.
- Highlights the exact characters that push a post over the selected platform's limit, and breaks down words, sentences, and reading time alongside the count.
Suggested flow
- 01
Paste or type text
Type your draft or paste existing copy directly into the composer.
- 02
Check platform meters
Pick a platform to see its real character limit and unit — X counts links as 23 characters flat, Bluesky counts by grapheme, most others count UTF-16 code units.
- 03
Visualise overflow & copy
Highlight exact characters that violate limits, refine your content, and copy the clean text with one click.
About this tool
A character counter that gets every platform's limit right, including X's link math
Draft once and check it against the real limit for every platform Postonus supports — X, LinkedIn, Instagram, TikTok, YouTube, Pinterest, Threads, Bluesky, and more — with X's flat 23-character link cost counted correctly instead of penalizing long URLs.
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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).