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Payload Playground is a free, client-side security toolkit built for penetration testers, bug bounty hunters, and security engineers. Everything runs in your browser — no installation, no accounts, and no data ever leaves your machine.
32
Payload Generators
XSS, SQLi, SSRF, reverse shells, JWT, and more
62
Security Tools
Encoder, decoder, hash generator, JWT attacker, WAF bypass
43
Cheat Sheets
Copy-ready payloads for every major vulnerability category
0
Data Uploaded
All processing happens in your browser — nothing leaves your machine
Four content areas, all free, all client-side.
Payload Generators
32 interactive generators for XSS, SQLi, reverse shells, SSRF, SSTI, XXE, JWT attacks, and more.
Security Tools
62 utilities — encoding pipeline, hash generator, JWT decoder, WAF bypass, CVSS calculator, and more.
Cheat Sheets
43 copy-ready cheat sheets covering OWASP Top 10 vulnerabilities and more.
CLI Tool
All 32 generators + 62 utilities from your terminal. npm install -g payload-playground.
Privacy by design
Every tool runs 100% client-side. Your payloads, tokens, hashes, and inputs never touch a server. No accounts, no logs, no telemetry.
Zero friction
Open a tool and it works immediately. No install, no sign-up, no license. Pentesters spend enough time on obstacles — their tools shouldn't add more.
Authorized testing only
Payload Playground is built for authorized penetration testing and security research. AI features are clearly labeled. Always test with explicit permission.
Education alongside execution
Every generator explains what it does and why. The blog, guides, and cheat sheets are designed so you understand the technique, not just the payload.
Payload Playground is built on Next.js 15 with the App Router, React 19, TypeScript 5, and Tailwind CSS 4. Every security tool runs as pure client-side JavaScript — there is no server-side computation for tool inputs. AI features (labeled with ✦) are the only exception, using a clearly-marked AI model for payload suggestions.
The CLI tool (payload-playground on npm) mirrors the web generators and utilities for terminal workflows, scripting, and offline use. It is a pure string generator — it never executes commands, reads files, or makes network requests.
For authorized security testing only
All tools and payloads on Payload Playground are designed for use in authorized penetration testing engagements, bug bounty programs with explicit scope, CTF competitions, and security research in environments you own or have written permission to test. Unauthorized testing is illegal and unethical — always obtain explicit permission before testing any system you do not own.
No setup. Just open a tool.