Free · No signup · Runs in your browser

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.

Free tool

Character Counter

Check your post against every platform's limit at once — X, Instagram, LinkedIn, TikTok, and more, with X's link rules applied.
Free tool

Instagram Font Generator

Turn plain text into 𝐛𝐨𝐥𝐝, 𝘪𝘵𝘢𝘭𝘪𝘤, 𝓈𝒸𝓇𝒾𝓅𝓉, and 20+ fancy styles for bios, captions, and comments. Copy-paste ready.
Free tool

Instagram Line Break Generator

Make caption spacing survive the paste. No more walls of text when Instagram eats your line breaks.
Free tool

Engagement Rate Calculator

Calculate engagement by followers, reach, or impressions — with per-platform benchmarks that tell you if it's good.
Free tool

Hashtag Counter

Count hashtags against 2026 limits — including Instagram's new 5-hashtag cap — and catch duplicates before posting.
Free tool

Thread Splitter

Split long text into a ready-to-post thread for X or Threads, with smart breaks and optional (1/n) numbering.
Free tool

UTM Builder

Build clean campaign tracking URLs with presets for Instagram, Facebook, X, LinkedIn, and email.
Free tool

Social Media Image Sizes

The 2026 cheat sheet: every post, story, profile, and cover dimension for all eight major platforms.
Free tool

Image Resizer

Resize one image for every network — crop with a focal point or fit with a blurred background. Nothing gets uploaded.
Free 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.

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.

Your whole social, handled.

Plan, approve and publish every account from one place.
Free to start, no card needed.

Start now for $0