Free tools · no sign-up
Free tools for your next post
Find hashtags, plan a week of posts, check a caption fits every network, and get the size and timing right. Free, in your browser, with no account.
- AIHashtag generatorHashtags for your topic, sized for the network you post on.
- AIPost idea generatorA week of post ideas with hooks and outlines, one per day.
- Character counterCheck one post against every network’s text limit at once.
- Best time to postCited posting windows per network, shown in your time zone.
- Image size guidePost, story, profile and cover sizes, and which ones your image fits.
- Text formatterBold, italic and monospace text you can paste anywhere.
About these tools
The character counter, text formatter, image size guide and best-time guide run entirely in your browser: nothing you type leaves the page. The hashtag and post idea generators send your short description to our tools server, which asks an AI model and sends the answer back, without saving what you typed.
Every guide cites its sources. The best times come from published studies and the image sizes from the networks’ own help pages, each linked, with third-party figures marked. Where we couldn’t find a reliable number, we leave it out.
For developers
Publish to all of them with one API call
postpeg is an API for products that post to social networks. Write the post once, and it is checked against every network’s rules, then published or scheduled on any mix of the 10 networks we support, with a status for each account.