Gemini Prompts for Web Developers: The Ultimate Cheat Sheet (PDF)

Google Gemini is now more than just a chatbot, it is a great coding partner. With the new Agent Mode and Firebase Studio, Gemini can write code, fix bugs across multiple files, and even secure your applications for you.

Why does this matter? Because manually typing out every line of code is slow. To get the best results from Gemini Pro, you need to give it clear tasks, not just ask questions.

This guide gives you the best Gemini prompts for developers to save hours of work. Read the list below or download the cheat sheet to keep it handy.

Stuck on a specific error? Contact us here with your error log (hide your passwords first!) and we will help you write the perfect prompt to fix it.

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Writing & Fixing Code

Use these prompts to make Gemini write new features, fix old code, or translate code from one language to another.

Task	Gemini Prompt
Create React Component	“Create a responsive React component for a pricing table with 3 tiers. Use Tailwind CSS for styling and ensure it works for screen readers (WCAG 2.1).”
Write Unit Tests	“Write a full set of Jest tests for this payment function. Include tests for failed payments and slow network connections.”
Update Old PHP	“Update this PHP 5.6 file to modern PHP 8.2 standards. Add types to variables and remove any old MySQL commands that no longer work.”
Convert to TypeScript	“Convert this JavaScript file to TypeScript. Create specific types for all data structures and remove any generic ‘any’ types.”
Build API Endpoint	“Write an Express.js route for getting user data. It must handle errors correctly and validate the input data using Zod.”
Create Cloud Config	“Create a Kubernetes configuration file for a Node.js app. Set limits on how much memory it can use and make it scale up automatically.”

Finding & Fixing Bugs

Paste your error messages or broken code here to let Gemini find the root cause and suggest a fix.

Task	Gemini Prompt
Fix JS Error	“I am getting an ‘undefined is not a function’ error in this code. Explain why it is happening and fix the timing issue causing it.”
Fix CORS Error	“I cannot connect to my API from my local computer due to a CORS error. Give me the exact code to add to my Next.js config to allow this connection.”
Analyze Crash Log	“Read this Node.js error log. Tell me exactly which file and line number caused the crash and suggest how to fix it.”
Security Check	“Check this login code for security holes like SQL injection. Tell me what is wrong and rewrite the code to be secure.”
WordPress Plugin Conflict	“My WordPress site crashed after I updated my plugins. Here is the debug log. Tell me which plugin is causing the conflict.”
Fix Database Lock	“Explain why this database query is getting stuck (deadlock). Suggest a way to rewrite the query so it runs smoothly.”

Command Line & Data Tools

Don’t memorize complex commands. Just describe what you want to do in plain English.

Task	Gemini Prompt
Match Text Patterns	“Write a ‘regex’ pattern to find email addresses that end in .edu or .gov. Explain how the pattern works simply.”
Automate File Tasks	“Write a script that finds all .jpg images in this folder, shrinks their file size, and moves them to a new folder called ‘optimized’.”
Fix Git Mistakes	“I accidentally uploaded a password to my code history. Give me the Git commands to remove it completely and safely.”
Clean Up Disk Space	“Give me a command to delete all stopped Docker containers and unused images to free up space on my hard drive.”
Search Logs	“Write a command to find all ‘500 error’ messages in this log file and show me which IP address appears the most.”
Schedule a Task	“Write a schedule command (cron) to run my database backup script every Sunday at 3 AM.”

Explaining Your Code

Generate clear instructions, diagrams, and documentation instantly so others can understand your work.

Task	Gemini Prompt
Document a Function	“Write a comment block for this function. Explain what data it needs, what it returns, and any errors it might produce.”
Create Project Guide	“Write a README file for this project. Include sections on how to install it, how to set it up, and how to deploy it.”
Draw a Diagram	“Create a flow diagram (Mermaid.js) that shows how a user logs in, talks to the API, and gets data from the database.”
Summarize Changes	“Read these technical update notes and rewrite them into a simple list of changes (Changelog) for non-technical users.”
Define API Rules	“Create a standard definition file (OpenAPI) for this user profile feature so other developers know how to use it.”
Explain Code	“Explain what this complex script does in plain English. Pretend I know Python but do not know this specific language.”

Website Builders (WordPress & Joomla)

Modernize old websites or build custom features without breaking the site.

Task	Gemini Prompt
Create Shortcode	“Write a WordPress shortcode that displays the 3 latest blog posts from the ‘News’ category, including their featured images.”
Build Joomla Module	“Write the basic PHP and XML code needed to create a Joomla 4 module that shows the last time a user logged in.”
Add Custom Content	“Write the code to add a ‘Portfolio’ section to WordPress. It should allow me to upload thumbnail images and add custom text.”
Fetch Data (Headless)	“Write a query to get the last 10 blog posts from a WordPress site using GraphQL, so I can display them on a separate app.”
Secure Plugin	“Update this WordPress form code to include security checks (nonces) so hackers cannot misuse it.”

📱 Mobile Tips for Developers

Code doesn’t stop when you leave your desk. Use these mobile features:

• Listen to Docs (NotebookLM): Upload a technical PDF to NotebookLM and it will turn it into a podcast you can listen to while commuting.
• Fix Bugs on the Fly: Copy a confusing error message from your phone and paste it into the Gemini App. It will explain the error in plain English.
• Code on a Tablet: Open Firebase Studio (formerly Project IDX) in your tablet’s web browser. It gives you a full code editor that runs in the cloud.

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✨ More Gemini Prompt Packs

• Nano Banana Prompt Cheat Sheet (AI Image Generation)
• Gemini Prompts for Students
• Gemini Prompts for Teachers & Professors
• Gemini Prompts for Social Media Marketers
• Gemini Prompts for Bloggers & Content Creators

Each guide includes tested prompts, real examples, and downloadable resources.