Checking a caption with 32 hashtags
Paste it into the hashtag counter and it flags Instagram's real 30-hashtag limit immediately, without you counting by hand.
Social media checker tools
This hub lists every free checker and limit-lookup tool SkedCast publishes in one place: hashtag and posting limits, media specs, accessibility, Open Graph previews and more. Each tool runs entirely in your browser with no sign-up, checking your own pasted text or entered numbers against real, sourced platform limits — never a guess dressed up as a fact.
Every social media checker tool, in one index
How to use this hub
- Pick what you need to check. Scan the cards below for the checker that matches your question — a limit, a spec, an accessibility scan or a preview.
- Open the tool. Click through to run it — every checker works standalone with its own inputs and its own page.
- Paste or enter your own content. Most checkers work from text, numbers or HTML you paste in yourself, not a live fetch from a URL.
- Read the result against the real limit. Each result is checked against a sourced, current platform limit, not an assumption carried over from memory.
- Bookmark the ones you use often. Hashtag and posting limits change occasionally, so revisit the specific checker rather than relying on a remembered number.
Worked examples
Previewing a shared link before you post it
Paste a page's HTML source into the Open Graph preview and see its title, description and image rendered as one mockup card, the same way most platforms would show it.
Checkers hub FAQ
- What is the difference between the checkers and the calculators hub?
- The checkers hub covers limits, specs and validation; the calculators hub covers formulas like engagement rate, ROI and profit margin instead.
- Do any of these tools fetch a live URL?
- No — none of them have a backend to do that from, so every checker works from text, numbers or pasted HTML you provide directly.
- Are these checkers free and do they require an account?
- Yes — every tool on this page is free with no sign-up, and each one runs entirely in your browser.
- How often are the platform limits on these pages updated?
- Each checker states its own review date at the bottom of the page, since different platforms change their limits on different schedules.
- Can I use these checkers without using SkedCast itself?
- Yes — every tool here works standalone for anyone, whether or not you use SkedCast to actually schedule your posts.
- Is there a hub for calculators too?
- Yes — the calculators hub covers engagement rate, ROI, budget, CPM, agency pricing and several other social media formulas.
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