
JSFiddle
CodeSandbox
GitHub
replit
VS Code
Pastebin.com
JS Bin
A front end web development playground.

Commentify AI
EchoTik
Tikstar
TikTok Super Tool
Detect TikTok shadowbans, account health issues, and policy risks before they kill your reach. Analyse videos and accounts to identify violations, suppression signals, and recovery actions.

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Based on our record, CodePen seems to be more popular. It has been mentioned 513 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | codepen.io | grumpygit.uk |
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| Company | — | Startup from the United Kingdom · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of CodePen yet.
The Forensic Lab for TikTok Creators (Built by a 58-Year-Old Vibe Coder) Forget viral hacks and vanity dashboards. GrumpyGit’s Creator Tools is an ai driven suite of tools for TikTok Shop Affiliates and growing TikTik Creators, who need to know why their views dropped, and what to do to fix it,...
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As answered by people managing CodePen and Grumpygit.uk.
Grumpygit.uk's answer:
Most TikTok tools are just "vanity mirrors"—they show you pretty graphs of your views going down. I built GrumpyGit because I needed actual answers.
I’m a 58-year-old creator who got tired of guessing why my videos were flopping. Unlike generic analytics dashboards, my tools use deep AI analysis and metadata scraping to tell you why you're struggling and what to do to fix it, not just that you're struggling.
Whether it's the Shadowban Checker that tests search visibility in real-time and also gives you a valuable plain English explanation of your stats, or the Violation Forensics tool that explains exactly which community guideline you accidentally tripped, this suite is designed for creators who want the data-driven, unvarnished truth. It’s not about hype; it’s about fixing your account so you can actually make money.
Grumpygit.uk's answer:
Because the other tools treat you like a statistic; I treat you the way I needed to be treated.
Most competitors charge you a monthly fortune just to show you a graph of your views going down. That’s useless. You choose GrumpyGit's Creator Tools because you want to know why they went down.
Not to forget that my free initial offering gives full access to my tools and analysis, nothing is 'blurred out'. You get to test everything properly and only stay or decide to take a subscription, if the tools offer you the value that you are looking for!
Grumpygit.uk's answer:
It’s for the creators who are serious about building their accounts organically and need to understand how the algorithm works. My tools are especially well suited for TikTok Shop Affiliates and business-minded creators who rely on their account for income!
If you're just posting cat videos for fun, you don't need me. But if you're trying to qualify for the Affiliate program, stuck in the "200-view jail," or trying to figure out why your product video got flagged for a "Commercial Policy Violation," you are the reason I built these tools.
Basically, I build for the people who treat content creation as a job and can't afford to have the algorithm inexplicably shut them down.
Grumpygit.uk's answer:
It started with a generic "Violation" notice and a lot of confusion.
Back in February 2025, I was grinding to qualify for the TikTok Shop Affiliate program. When I finally qualified, I’d then spend hours creating and editing a 30 second video, only to have it flop or get flagged with zero explanation. I looked for tools to explain why, but all I found were expensive dashboards showing me vanity metrics I already knew.
I’m 58. I hadn’t written a line of PHP since the 90s. But I was frustrated enough to try. I fired up an AI coding assistant and decided to build a simple script to analyse my video metadata.
That "simple script" spiralled into a fully blown obsession. I have spent 6 months "Vibe Coding"—battling with API documentation, learning modern architecture, and writing over 8,000 lines of code to build the tools I wished I had on Day 1. GrumpyGit isn't a VC-backed startup; it’s the result of one stubborn old git refusing to let an algorithm beat him.
Grumpygit.uk's answer:
The core is a custom WordPress plugin built on a "Hub & Spoke" architecture using PHP. I didn't want the bloat of modern frameworks, so the frontend is clean, vanilla JavaScript and CSS.
The real magic happens in the integrations: I use Google's Gemini 2.5 API (Flash & Pro models) for the intelligence layer, utilizing a custom "double-failover" system I built to manage costs. For the raw data, I rely on Apify actors to handle the heavy lifting of TikTok metadata extraction, with everything cached in custom MySQL tables to keep it fast.
Grumpygit.uk's answer:
Seriously, I have literally just launched and I am in that "exclusive early access" phase where every user gets to shout directly at me (the developer) if something doesn't work, or could be better.
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Codepen is a social network for developers to show off their work, ask and answer questions, and exchange ideas. It's like a Reddit for coding and design, with a large community of talented web developers.
Codepen is a social development environment that allows developers to showcase their work and experiment with HTML, CSS, and JavaScript in a collaborative space. Codepen’s focus on visual and interactive development...
Codepen is a social development environment for front-end designers and developers. Build and deploy a website, show off your work, build test cases to learn.
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> I vividly remember IE and many hacks to have css elements properly working in it… The common advice now is to only use CSS that is supported in the last two major versions of each major browser. You can check any css property's support... - Source: Hacker News / about 1 month ago
Thank you, heartfelt... For sharing an artwork, a miracle! Just in case, have you considered publishing the work at platforms as CodePen, where genius Artists/People express their art, too, as you?: // https://codepen.io/. - Source: Hacker News / 2 months ago
Embed on DEV: If you prefer CodePen embed, create a Pen with that HTML and add to the post as: {% codepen https://codepen.io//pen/ %}. - Source: dev.to / 11 months ago
Tracking Grumpygit.uk since Dec 2025.
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