LinkedIn Post Preview and Social Media Formatter
Write your post and see exactly how it will look in the LinkedIn feed on desktop and mobile, including where the "…see more" cut-off falls. Add bold, italic and other text styles LinkedIn does not offer, bullet lists and Instagram-safe line breaks, generate hashtags for LinkedIn, Instagram, X, TikTok and YouTube, and resize images for YouTube thumbnails, Facebook covers, Instagram and WhatsApp. Everything stays in your browser.
Free · No sign-up
How to use it
- Type or paste your post. Add your name and headline to see a realistic preview.
- Select words and press B, I or another style to format them, or turn lines into a bullet or numbered list.
- Switch between desktop and mobile to see where "…see more" cuts the text, and make sure your first lines hook the reader.
- Copy the post for LinkedIn or for Instagram, generate hashtags in the Hashtag generator, and resize your image to the right size in the Social image resizer.
Why use this tool
Real feed preview
Desktop and mobile widths, light and dark mode, and the three-line "…see more" cut-off, so you know what readers see first.
Bold and italic text
Bold, italic, bold italic, underline, strikethrough and monospace that paste into LinkedIn, Instagram, X and Facebook.
Instagram line breaks
Copy for Instagram keeps your empty lines, so captions are not squashed into one block.
Hashtag generator
Hashtags built from your own words, with the right number for LinkedIn, Instagram, X, TikTok and YouTube.
Social image resizer
YouTube thumbnails, Facebook covers, Instagram posts and stories, LinkedIn banners, X headers and WhatsApp profile pictures, with crop or blurred-background fit.
Private
No LinkedIn login and no uploads. Your draft is saved in this browser only.
How long is the LinkedIn "see more" cut-off?
LinkedIn shows the first three lines of a post in the feed, about 210 characters on desktop and around 140 on a phone, then hides the rest behind "…see more". Line breaks count: a post that starts with three short lines is cut sooner. Readers decide in those first lines whether to click, so put your hook, a surprising fact, a question or a clear promise, right at the start.
A post can be up to 3,000 characters, comments up to 1,250, and an article headline up to 150. The preview above measures the cut-off on the actual text, so you can see exactly what shows.
Social media image sizes in 2026
Uploading the wrong size makes networks crop your picture or add blurry bars. These sizes are safe for each platform:
| Image | Size in pixels | Tip |
|---|---|---|
| YouTube thumbnail | 1280 × 720 | Keep text away from the bottom right, where the video length shows. |
| Instagram post | 1080 × 1080 or 1080 × 1350 | Portrait 4:5 takes more space in the feed. |
| Instagram story or reel | 1080 × 1920 | Leave about 250 px clear at top and bottom. |
| Facebook cover | 1640 × 624 | Phones crop the sides; keep the subject in the centre. |
| LinkedIn post image | 1200 × 627 | Square 1200 × 1200 also works well on mobile. |
| LinkedIn banner | 1584 × 396 | Your profile photo covers the bottom left. |
| X header | 1500 × 500 | The profile photo covers the bottom left on mobile. |
| WhatsApp profile picture | 500 × 500 | Shown as a circle; keep faces centred. |
Is bold text on LinkedIn a good idea?
LinkedIn's editor has no bold or italic, so tools like this one swap your letters for look-alike Unicode characters. They paste anywhere, but search does not always match them, and screen readers may spell them out letter by letter. Use them for a word or a short heading, not for whole paragraphs, and never for names, links or hashtags.
Frequently asked questions
How do I see how my LinkedIn post will look before posting?
Paste your post into the editor. The preview shows it as it appears in the feed, on desktop or mobile, with the "…see more" cut-off in the right place.
How do I make text bold on LinkedIn?
Select the words in the editor and press B. The tool turns them into bold Unicode letters. Click Copy post and paste into LinkedIn; the bold stays.
How many characters show before "see more" on LinkedIn?
About 210 characters, or three lines, on desktop, and about 140 on mobile. Empty lines and short lines use up those three lines faster.
How do I add line breaks to an Instagram caption?
Write your caption here with empty lines between paragraphs and click Copy for Instagram. Empty lines get an invisible character, so Instagram keeps the spacing.
How many hashtags should I use?
On LinkedIn 3 to 5, on X 1 or 2, and on TikTok 3 to 5. Instagram allows a maximum of 5 per post. YouTube shows the first 3 above the title and ignores all of them if you use more than 15.
What size is a YouTube thumbnail?
1280 × 720 pixels (16:9), under 2 MB, as JPG or PNG. Choose YouTube thumbnail in the Social image resizer, adjust the crop and download.
Can I resize a video for Instagram here?
No, this tool resizes images only. For videos, export at 1080 × 1920 for reels and stories or 1080 × 1350 for feed posts in your video editor. You can make the cover image here.
Is this tool connected to LinkedIn?
No. It is not affiliated with LinkedIn and does not need your login. Nothing is posted or uploaded; you copy the text and paste it yourself.
How to write a LinkedIn post that people actually read
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