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Replit Apps, Handwritten Infographics, and Cold Outreach

Today's guide covers building functional website widgets without coding, generating authentic-looking handwritten notes with Gemini, and optimizing your agentic workflows.

Build a Lead Magnet Widget with Replit

You can create custom software tools for your website without writing code by using Replit's agent features. This workflow allows you to build a cost-savings calculator or lead capture form in minutes.

Step 1: Go to Replit, toggle "Plan mode," and use this prompt:

Build a custom lead gen widget app using Python (Flask) and Replit SQL. 
Users will create embeddable cost-savings calculators that capture email leads and track analytics. 
Allow custom colors, form fields and formulas.

Step 2: Click "Build," test the tool in the preview tab, and copy the iframe code to embed it on your site.

Create Handwritten Infographics with Gemini

Google's Gemini can now generate convincing handwritten-style visuals. This is perfect for social media posts that need a "whiteboard" aesthetic.

Model: Gemini (Thinking Model)
Prompt:

Generate a single image of a physical, hand-drawn infographic on a large whiteboard or notebook page. 
Style Instructions (Read First):
Medium: The image should resemble a photograph of a hand-drawn infographic on a whiteboard or notebook page.
Texture: All elements must look like they’re created by hand with colored markers (black, blue, red, green) and highlighters.
No Digital Fonts: Text must be handwritten/hand-printed with markers.
Layout: 1080x1350 resolution. Use multi-colored markers for emphasis. Add diagrams, icons, and key points.
Additional: Include the handwritten text "[Insert Your CTA]" at the bottom.
Handwritten Infographics Example - How AI Models Learn
Handwritten Infographics Example - How AI Models Learn

Freelancer Cold Outreach Template

Use this prompt to generate personalized outreach messages for LinkedIn or email.

Act as a top-tier freelance service provider in [your niche]. Craft a highly personalized cold outreach message designed to attract premium clients.
Context:
• My niche: [insert service]
• Experience: [beginner/expert]
• Unique edge: [value prop]
• Target client: [startups/agencies]
Goal: Grab attention in 2 lines, communicate value, create urgency. Keep under 120 words for DMs. 
Output 3 variants: casual, professional, and punchy/edgy.

Strategic Comparison: Opus 4.6 vs. GPT-5.3 Codex

Recent tests by experts suggest different prompting strategies for the top two models:

Feature

Claude Opus 4.6

GPT-5.3 Codex

Best Use Case

Comprehensive reasoning & agent teams

Progressive execution & shipping speed

Prompt Strategy

"Build an agent team with specific roles..."

"Think deeply about [topic]..."

Interruption

Harder to steer mid-stream

Allows mid-execution redirection

Cost/Speed

High token usage (150k+), slower

Optimized for speed (under 4 mins)

Community Workflow: eBay Automation

A community member built a Mac Automator app using ChatGPT to streamline shipping. The workflow takes a dropped eBay packing list file and automatically creates a 4x6 thermal label print-ready version, while simultaneously generating a "Ready to Ship" email for the buyer.

#Prompt Engineering#Replit#Gemini#Freelancing#AI Tutorials
Olivér Mrakovics
Lead Developer & AI Architect

Meet Olivér Mrakovics, World Champion Web & Full-Stack Architect at testified.ai. He audits software for technical integrity, pSEO, and enterprise performance.