Social Media
Bios, captions, hashtags, WhatsApp message formatting and a visual post designer for Instagram, LinkedIn and WhatsApp.
Social media tools cover both copy and visuals: bio drafts for Instagram, X, LinkedIn and TikTok; ranked hashtag sets; caption generators in different tones; a WhatsApp message formatter; and the Social Media Post Designer for Instagram, LinkedIn and WhatsApp image posts.
Generation and design run in your browser from the keywords, tone, photo and templates you choose — brand details and images are not uploaded to a ToolSink server.
Treat outputs as drafts: edit for your voice, check live character limits, and export post images at each network’s recommended size before publishing.
Common tasks
- Draft a bio that fits each platform's character limit
- Find high-reach and niche hashtags for a post topic
- Design Instagram, LinkedIn and WhatsApp posts and export PNG
- Format WhatsApp messages with bold, ticks and sticker-style text
Each tool page below includes a working utility plus a short original guide for that job. How we write those guides is on our editorial standards page.
Bio Generator
Generate short bios for Instagram, X, LinkedIn and TikTok from a topic and tone.
Hashtag Generator
Get ranked hashtag sets by topic, grouped by reach for posts and Reels.
Caption Generator
Draft captions in funny, bold, professional and other voices you can paste anywhere.
WhatsApp Message Generator
Format WhatsApp text with bold, stickers, green ticks, red errors and emoji styling.
Social Media Post Designer
Design Instagram, LinkedIn and WhatsApp posts from templates and export as PNG.