Why I Built The Social Media Kit
Free, privacy-first tools to preview your posts, calculate cutoffs, and format content with confidence — zero paywalls, zero account sign-ups, and zero file uploads.
Junior (juniorxk)
Founder & Lead DeveloperIndependent web engineer and digital content creator. Building lightweight, open-web utilities that solve real publishing headaches without compromising your data privacy.
💡 The Frustration That Started It All
If you have ever spent an hour writing a thoughtful LinkedIn post, only to realize your main hook got buried behind the mobile ...see more fold, or exported a vertical TikTok/Reels video only to find the app's comment and share buttons completely cover your subtitles, you know how annoying social media formatting can be.
Platform documentation is constantly scattered across obscure developer hubs, dimensions change without notice, and testing directly inside native apps requires publishing or saving messy drafts.
🛑 The Problem with Existing Online Tools
When I searched for solutions, the web was dominated by three types of frustrating tools:
Aggressive Paywalls
Sites that let you crop 2 images before demanding a $19/month subscription for basic features.
Data Privacy Risks
Converters that upload your confidential drafts, photos, and personal video files to remote cloud servers.
Forced Account Sign-Ups
Services requiring your email address and personal information just to preview character counts.
✨ The 3 Core Guarantees of The Social Media Kit
100% In-Browser Privacy (Zero Cloud Uploads)
Every calculation, image crop, aspect ratio conversion, and text check runs entirely in your local browser using modern HTML5 Canvas and client-side JavaScript. Your text drafts and media files never leave your device.
Zero Paywalls, No Accounts, No Friction
Open any tool, paste your text or preview your media, and get immediate results. No logins, no credit cards, and no annoying spam emails.
Calibrated to Real Viewports
Our simulators are tuned to real iOS and Android mobile screens, reflecting actual line-wrapping, character thresholds, and platform UI chrome overlays across LinkedIn, TikTok, Instagram, YouTube, X, Discord, and more.
💬 Get in Touch
The Social Media Kit is an ongoing labor of love. If you spot a changed dimension on your phone, have an idea for a new micro-tool, or want to collaborate, feel free to drop me a message: