Free tools for social media managers
Counters, calculators, and generators we built for our own workflow — now free for yours. No account, no paywall, your text never leaves your browser.
Character Counter
Check your post against every platform's limit at once — X, Instagram, LinkedIn, TikTok, and more, with X's link rules applied.
Open tool →Instagram Font Generator
Turn plain text into 𝐛𝐨𝐥𝐝, 𝘪𝘵𝘢𝘭𝘪𝘤, 𝓈𝒸𝓇𝒾𝓅𝓉, and 20+ fancy styles for bios, captions, and comments. Copy-paste ready.
Open tool →Instagram Line Break Generator
Make caption spacing survive the paste. No more walls of text when Instagram eats your line breaks.
Open tool →Engagement Rate Calculator
Calculate engagement by followers, reach, or impressions — with per-platform benchmarks that tell you if it's good.
Open tool →Hashtag Counter
Count hashtags against 2026 limits — including Instagram's new 5-hashtag cap — and catch duplicates before posting.
Open tool →Thread Splitter
Split long text into a ready-to-post thread for X or Threads, with smart breaks and optional (1/n) numbering.
Open tool →UTM Builder
Build clean campaign tracking URLs with presets for Instagram, Facebook, X, LinkedIn, and email.
Open tool →Social Media Image Sizes
The 2026 cheat sheet: every post, story, profile, and cover dimension for all eight major platforms.
Open tool →Image Resizer
Resize one image for every network — crop with a focal point or fit with a blurred background. Nothing gets uploaded.
Open tool →Instagram Grid Maker
Split a photo into a 3×3, 3×2, or 3×1 puzzle grid or carousel slides, with a live profile preview and posting order built in.
Open tool →Why these tools are free
We make Zilfu, a social media scheduler for agencies, businesses, and creators. These are the small utilities our own team reaches for daily — checking limits, formatting captions, building tracking links — so we put them online for everyone. Every tool runs entirely in your browser: nothing you type is uploaded, stored, or analyzed.
If the tools are useful, the product probably will be too: Zilfu schedules posts to Instagram, TikTok, LinkedIn, Threads, Pinterest, Facebook, and X from one composer, with unlimited team members on every plan and a free tier for 2 accounts.
Tools are nice. A system is better.
Schedule a week of posts across seven networks in one sitting — with live character counts, per-platform captions, and approvals built in. Free for 2 accounts.