Free tools
Free social media tools
Caption and hashtag generators, a character counter, thread splitter, image resizer, and more — built by PostJay. Free to use, no signup needed.
AI generators
AI Caption Generator
Generate scroll-stopping captions for any platform in seconds.
Open toolHashtag Generator
Get relevant, high-reach hashtags tailored to your topic and platform.
Open toolHook Generator
Write first lines that stop the scroll and pull people in.
Open toolYouTube Tag Generator
Generate relevant, search-friendly YouTube tags for any video.
Open toolBio Generator
Write a short, punchy bio for any platform in seconds.
Open toolInstagram Caption Generator
Generate Instagram captions that fit your post and your tone.
Open toolTikTok Caption Generator
Write short, punchy TikTok captions for any video.
Open toolFacebook Caption Generator
Write Facebook post captions that get people talking.
Open toolLinkedIn Post Generator
Turn an idea into a ready-to-post LinkedIn update.
Open toolInstagram Hashtag Generator
Find a mix of broad and niche Instagram hashtags for your post.
Open toolTikTok Hashtag Generator
Get relevant TikTok hashtags for your video in seconds.
Open toolYouTube Hashtag Generator
Generate YouTube and Shorts hashtags for your video.
Open toolInstagram Bio Generator
Write an Instagram bio that says who you are in 150 characters.
Open toolTikTok Bio Generator
Write a TikTok bio that fits in 80 characters.
Open toolUsername Generator
Generate username ideas and check if they're free on every platform.
Open toolInstagram Username Generator
Generate Instagram username ideas and check which are available.
Open toolTikTok Username Generator
Generate TikTok username ideas and check which are available.
Open toolYouTube Channel Name Generator
Generate YouTube channel names and check if the @handle is free.
Open toolYouTube Title Generator
Generate click-worthy YouTube titles that fit in search.
Open toolYouTube Description Generator
Write a search-friendly YouTube video description in seconds.
Open toolInstagram Reel Script Generator
Get a hook-first Reel script with beats, on-screen text and a CTA.
Open toolTikTok Script Generator
Get a hook-first TikTok video script with beats and on-screen text.
Open toolLinkedIn Headline Generator
Write a LinkedIn headline that tells recruiters and clients what you do.
Open toolLinkedIn About Section Generator
Write a LinkedIn About section that sounds like you, not a template.
Open toolEmoji Translator
Add the right emojis to any caption or post automatically.
Open toolUtilities
Character Counter
Live character count against every platform's limit at once.
Open toolThread Splitter
Turn long text into clean, numbered threads that fit each platform.
Open toolLinkedIn Text Formatter
Add bold and italic styling to your LinkedIn and social posts.
Open toolFancy Text Generator
Convert plain text into stylish unicode fonts and emoji flair.
Open toolImage Resizer
Crop and resize images to the perfect size for every platform — in your browser.
Open toolBest Time to Post
See the best times to post on each platform and plan around them.
Open toolInstagram Font Generator
Turn plain text into fancy unicode fonts for your Instagram bio and captions.
Open toolFacebook Font Generator
Create bold, italic and stylish unicode fonts for Facebook posts and your bio.
Open toolTikTok Font Generator
Generate cool fancy fonts for your TikTok bio, captions and username.
Open toolX (Twitter) Font Generator
Turn plain text into bold, italic and stylish fonts for X (Twitter) posts and bio.
Open toolDiscord Font Generator
Make bold, italic and fancy unicode text for Discord messages, names and status.
Open toolTelegram Font Generator
Create stylish unicode fonts for Telegram messages, bios and channel posts.
Open toolInstagram Grid Maker
Split a photo into a seamless Instagram grid — right in your browser.
Open toolInstagram Line Break Generator
Add clean line breaks and spacing to Instagram captions and bios.
Open toolYouTube Title Length Checker
Check your YouTube title and description length before you publish.
Open toolLinkedIn Bold Text Generator
Make bold and italic text for LinkedIn posts, headlines and your About section.
Open toolInstagram Carousel Splitter
Split a wide image into seamless Instagram carousel slides.
Open toolInstagram Feed Preview
Preview and rearrange your next posts in an Instagram-style grid.
Open toolYouTube Thumbnail Tester
See how your thumbnail and title look in YouTube's feed before you upload.
Open toolSocial Media Image Sizes
Every recommended image and video size for each platform, in one place.
Open toolCalculators
Engagement Rate Calculator
Work out your engagement rate on any platform and see how it compares.
Open toolInstagram Engagement Rate Calculator
Calculate your Instagram engagement rate by followers or by reach.
Open toolTikTok Engagement Rate Calculator
Calculate your TikTok engagement rate by views or by followers.
Open toolYouTube Engagement Rate Calculator
Calculate the engagement rate of a YouTube video or channel.
Open toolTikTok Money Calculator
Estimate what a TikTok creator can earn from views and brand deals.
Open toolYouTube Money Calculator
Estimate YouTube ad earnings from your views and RPM.
Open toolCheckers
Username Checker
Check if a handle is taken across all major platforms at once.
Open toolInstagram Username Checker
Check if an Instagram handle is available before you claim it.
Open toolTikTok Username Checker
Check if a TikTok username is available in seconds.
Open toolX (Twitter) Username Checker
Check if an X (Twitter) handle is taken or available.
Open toolYouTube Handle Checker
Check if a YouTube @handle is available for your channel.
Open toolPinterest Username Checker
Check if a Pinterest username is available before you claim it.
Open tool