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Free tools

Get your post ready before it goes out.

Free tools for the networks Unisenda posts to: planning, sizes, previews, timing and limits. No sign-up, and nothing you add leaves your browser.

+5

Caption length checker

Paste a caption and see whether it fits Instagram, TikTok, YouTube, LinkedIn, X, Threads, Pinterest, Facebook and Bluesky, counted the way each network counts.

Free · works on your phone

+5

Social media size checker

Check a photo or video against each network's size, length and file limits, right in your browser. Nothing is uploaded.

Free · works on your phone

+3

Social media image resizer

Turn one photo into the sizes the networks recommend: a feed photo, a Story, a Pin, YouTube thumbnails and a link image. Crop or fit it, right in your browser. Nothing is uploaded.

Free · works on your phone

+3

Social media post preview

See a caption and photo the way each feed shows them on Instagram, Facebook, LinkedIn, X, Threads, Pinterest and Bluesky, with any text over a limit marked.

Free · works on your phone

Best time to post

The best days and times to post on Instagram, TikTok and LinkedIn from the latest studies, shown on your own clock when your audience lives elsewhere.

Free · works on your phone

+5

Content calendar planner

Plan a month of posts by network, then download the plan for your calendar and as a spreadsheet for Google Sheets or Excel. Nothing is uploaded or saved.

Free · works on your phone

Instagram carousel splitter

Cut one wide picture into 4:5 slides that swipe as one image in an Instagram carousel, right in your browser. Nothing is uploaded.

Free · works on your phone

+5

Social media holidays 2027

The days worth posting about in 2027, from international days to holidays and shopping days, each with its source. Add the ones you choose to your calendar.

Free · works on your phone

Safe zone checker

See which edges of a vertical video buttons and captions may cover on Reels, Stories and YouTube Shorts, on your own frame. Nothing is uploaded.

Free · works on your phone

Video script timer

Paste a script to see how long it takes to read aloud at your pace, and whether the video fits Instagram Reels, TikTok, YouTube Shorts and Facebook Reels.

Free · works on your phone

+5

Hashtag counter

Count the hashtags in a caption against each network's limit, Instagram's 5 included, and spot repeats before you post. Nothing is uploaded.

Free · works on your phone

LinkedIn text formatter

Style a few words of a LinkedIn post in bold or italic, add bullet or numbered lists, see the post and copy it. Nothing is uploaded.

Free · works on your phone

Username checker

Check a username against Instagram's and TikTok's rules for length and characters, then open each profile to see whether the name is taken.

Free · works on your phone

YouTube title checker

Count a video title against YouTube's character limit and see roughly where it gets cut off in search, on the home page and on a phone.

Free · works on your phone

Instagram grid maker

Cut one picture into 3, 6 or 9 posts that line up on your Instagram profile grid, listed in the order to publish them. Nothing is uploaded.

Free · works on your phone

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