Draft and schedule social media posts with platform-specific previews and optimal posting time suggestions.
Write the post once, and this tool shows you how it looks on each platform before you commit to a time. You write the caption and pick the platforms, and it renders a preview for each network, checking the text against that platform's character limit and formatting conventions before suggesting a posting window based on typical engagement patterns. The part people most often get wrong: nothing gets published for you. The tool runs entirely in the browser with no connection to platform accounts, so the schedule it produces is a plan you execute yourself. The previews are the real payoff - one caption can fit three networks and exceed another's limit.
A concrete input and expected output from the current implementation.
Input
Caption: Summer sale: 20% off everything this weekend. Our whole shop is on sale, Friday through Sunday, with free shipping on orders over $50. Grab the things you have been eyeing and save big. Tell your friends - good deals do not last. Shop now, link in bio. Every order ships within one business day, and returns are free for thirty days, no questions asked. Once they are gone, they are gone. Post to: X, Instagram, Facebook, LinkedIn
Expected output
X: 388 of 280 characters - over the limit, flagged for trimming before scheduling. Instagram: 388 of 2,200 - fits. Facebook: 388 of 63,206 - fits. LinkedIn: 388 of 3,000 - fits.
The caption is 388 characters, so only X rejects it; the other three ceilings are far higher. This is the whole point of per-platform previews - the character limit is the one difference that breaks an otherwise finished plan.
The tool renders your draft the way each network shows it and compares its length against that network's documented ceiling: 280 characters on a standard X account, 2,200 on Instagram, 3,000 on LinkedIn, 63,206 on Facebook. Over-limit text is flagged before it reaches the schedule, and per-platform quirks - how hashtags render, whether the link counts in the total, how emoji are weighed - are surfaced instead of assumed identical.
Each approved post gets a target date and time, and the tool suggests a different window when your pick falls outside typical engagement hours for that platform. The finished schedule is a chronological plan of what goes where and when. Because the tool runs in the browser with no access to your accounts, expect to publish manually or through a native scheduler - the plan is guidance, not automation.
No. It runs entirely in the browser with no connection to Instagram, X, Facebook, or LinkedIn, so it cannot publish on your behalf. It gives you the draft, the per-platform previews, and a schedule to follow. To automate actual posting, paste each finished post into a native scheduler or a paid service that holds your account credentials.
Because the limits are different: X allows 280 characters on a standard account, Instagram 2,200, LinkedIn 3,000, Facebook 63,206. A caption written for a long-form network regularly exceeds X's ceiling, and X also weighs most emoji as two characters. The flag is the tool telling you to trim or split into a thread before you schedule, not a malfunction.
The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
Shorten URLs with local redirect tracking via localStorage. See click counts and generate a QR code for each link.
Build UTM-tagged URLs for campaign tracking with source, medium, campaign, term, and content parameters.
Enter 2+ headlines and see simulated previews in Google results, email subject lines, and social posts side-by-side.
Count characters for Twitter/X, LinkedIn, Facebook, and Instagram with platform-specific limits and warnings.
Calculate click-through rates from impressions and clicks with industry benchmarks and trend analysis.
Check email subject line length against best practices for desktop and mobile with preview text optimization.