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Free · No sign-up · 10 visual card templates · Not AI text — visual card designer · Animated .webm · 100% client-side

Free Social Post Card Maker for Developers and Founders

Turn plain text into polished tweet cards, LinkedIn post images, announcement graphics, metrics snapshots, and more — all from one free visual design tool. Unlike AI text generators (Hootsuite, Buffer, Canva), KromaStudio is a visual card designer: you control the layout, brand colors, avatar, and export a sharp PNG or a looping .webm animation. No sign-up, no design skills needed.

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Visual card maker — not an AI text generator

Most tools called “social post generator” use AI to write text captions. KromaStudio is different — it's a visual card designer that turns your content into a shareable image. You write the copy; KromaStudio makes it look polished and ready to post.

  • Designed for developers & foundersTemplates built for what developers actually share: tweet screenshots, metrics cards, code + announcement combos, and launch threads.
  • Export a real image, not a text draftEvery export is a high-resolution PNG or animated .webm — attach it to your tweet, LinkedIn post, or Product Hunt gallery directly.
  • No AI hallucinations, no subscriptionYou control every word. No AI rewrites, no paywalled templates, no sign-up — just a fast, free canvas for your content.
  • Brand-consistent across every postSet your avatar, handle, accent color once and every card exports in the same style — builds recognizable brand presence over time.

10 social post card templates

Each template is pre-sized and styled for social feeds. Pick the one that fits your content, customize text and author, and export.

  • TweetA styled Twitter/X post card with avatar, handle, likes, retweets, and reply count.Best for: Sharing tweet screenshots as shareable images on LinkedIn or in blog posts.
  • LinkedInProfessional post card with author name, headline, and engagement stats.Best for: Repurposing LinkedIn posts as graphics for newsletters or other platforms.
  • VideoVideo thumbnail card with a play button overlay, title, and author.Best for: Promoting YouTube videos, Loom demos, or walkthrough clips.
  • ThreadMulti-card thread layout for storytelling or step-by-step breakdowns.Best for: Developer tutorials, launch threads, and how-it-works explainers.
  • QuoteLarge pull-quote card with author attribution and accent color.Best for: Sharing testimonials, user feedback, or key insights from a talk.
  • AnnouncementBold launch card with headline, subtext, and a CTA badge.Best for: Product launches, feature drops, and open-source releases.
  • TestimonialCustomer quote card with avatar, name, role, and company.Best for: Social proof posts, case study headers, and landing page cards.
  • CarouselMulti-slide layout with a consistent header and numbered pages.Best for: LinkedIn carousels, educational series, and step-by-step guides.
  • Before/AfterTwo-panel comparison card showing a before and after state.Best for: Code refactors, design improvements, and performance wins.
  • MetricsData card with key stats — replies, reposts, impressions, CTR, revenue.Best for: Performance updates, monthly reviews, and growth milestone posts.

How to create a social post card

  1. Step 1: Pick a template

    Open KromaStudio and switch to Content mode. Choose from 10 templates — Tweet, LinkedIn, Video, Thread, Quote, Announcement, Testimonial, Carousel, Before/After, or Metrics.

  2. Step 2: Customize text and author

    Edit the post text, author name, handle, and avatar. Set an accent color to match your brand. All edits are live on the canvas — no page reloads.

  3. Step 3: Export as PNG or animated .webm

    Click Export for a high-resolution PNG at 1×, 2×, 3×, or 4× scale — ready to post on Twitter/X, LinkedIn, or attach to a Product Hunt launch. Or open Animate to render a Float, 3D Tilt, or Auto Scroll loop as .webm.

Built for developer and founder content

  • Developer launch threads

    Combine an Announcement card for the hook, a Thread card for the breakdown, and a Metrics card for the traction update — all from one tool, all in a consistent style.

  • Founder LinkedIn posts

    The LinkedIn template lets you turn a plain text update into a polished card with your name, avatar, and engagement stats — ready to post or embed in a newsletter.

  • Open-source release posts

    Use the Announcement or Before/After template to show off a new feature, a performance win, or a code refactor. Export at 2× and attach to your release tweet.

  • Repurposing testimonials and reviews

    Drop a customer quote into the Testimonial template, set your brand accent color, and export a PNG that works in landing pages, Product Hunt galleries, and social posts.

Frequently asked questions

What templates are available?
10 templates: Tweet, LinkedIn, Video, Thread, Quote, Announcement, Testimonial, Carousel, Before/After, and Metrics.
Is the content post generator free?
Yes. KromaStudio is completely free — no sign-up, no watermark, no export limits.
Can I export animated social post videos?
Yes. Open the Animate panel to render any content card as a looping Float, 3D Tilt, or Auto Scroll .webm — great for Twitter/X and LinkedIn feed videos.
Does my content get uploaded to a server?
No. KromaStudio runs 100% client-side. Your text, images, and exported files never leave your device.
How is this different from Canva or Adobe Express?
Canva and Adobe Express are broad design tools for general audiences. KromaStudio is purpose-built for developers and founders — with developer-specific templates (tweet cards, metrics, code + announcement combos), animated .webm export, and zero sign-up.
Can I use my own avatar and brand colors?
Yes. Upload a custom avatar (or use initials fallback), enter your handle and name, and set an accent color to match your brand palette.
What resolution does the export PNG use?
Choose from 1×, 2×, 3×, or 4× export scale. At 2× or 3× the card is sharp on Retina displays and social feed previews. At 4× it's print-ready.
Can I create a Metrics card to show growth numbers?
Yes. The Metrics template has editable fields for replies, reposts, likes, impressions, CTR, and revenue — fill in your numbers and export.

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