Free · No sign-up · Runs in your browser
Tools for people who post
Fancy fonts for your bio, character counts for every platform, threads, hashtags, Instagram grids and carousels, safe zones for Reels and TikTok, and images resized to the right size. Your photos and drafts never leave your device.
Text & captions
- Fancy FontsBold, italic, script, bubble and 20 more styles to copy into your bio, name or caption.
- LinkedIn FormatterBold, italic and bullet points in LinkedIn posts, with a preview of where “see more” cuts in.
- Character CounterLive counts against every platform's limit: X, Instagram, TikTok, LinkedIn, YouTube and more.
- Thread SplitterPaste a long post and get a numbered thread for X, Threads, Bluesky or Mastodon.
- Hashtag OrganizerCount, dedupe and sort a caption's hashtags, catch banned or broken ones, and save sets to reuse.
Images
- Instagram GridSplit one photo into 3, 6 or 9 posts that join up on your profile grid.
- Carousel SplitterCut a panorama into seamless carousel slides for Instagram and LinkedIn.
- Image ResizerResize a photo to the right size for any post, story, banner or profile picture.
- Safe Zone CheckerSee where Reels, Stories, TikTok and Shorts buttons and captions cover your image or video.
- YouTube ThumbnailGet any YouTube video's thumbnail in HD from its link.
Frequently asked questions
Is Post Utils free?
Yes. Every tool is free to use, with no sign-up and no watermark on anything you make.
Do you upload my photos or text?
No. The tools run in your browser, so your photos and drafts stay on your device. The only thing fetched from elsewhere is a YouTube thumbnail, which comes straight from YouTube.
Which platforms are covered?
Instagram, TikTok, X (Twitter), Threads, LinkedIn, YouTube, Facebook, Bluesky, Mastodon, Pinterest and WhatsApp, with each platform's own limits and image sizes.
Do fancy fonts work everywhere?
They're Unicode characters, not real fonts, so they paste into any app that shows text. Screen readers can stumble over them, so use them for a name or a heading rather than a whole caption.
Editing video or audio for your posts? Try Clip Utils: trim, compress, add subtitles and more, also in your browser.