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Fast browser tools that run on your device, ready-made kits for builders, and new apps on the way. Pull up a chair and get to work.
$ kittybin open qr-code loading qr-code ............ ready files uploaded ............. 0 account needed ............. no $
01tools
Everything runs right in your browser. Your files stay on your device.
Convert PNG, JPG, WebP and more without leaving the page.
open image-converter
Merge, split and compress PDFs on your own machine.
open pdf-tools
Clean QR codes for links, Wi-Fi and plain text.
open qr-code
Count, clean, change case and compare text.
open text-tools
Everyday calculators for money, dates and units.
open calculators
JSON, Base64, hashes, regex and other daily helpers.
open dev-tools
Check and write robots.txt rules for AI crawlers.
open ai-crawler-tools
See when your domains and SSL certificates expire, then add calendar reminders.
open expiry-checker
Paste a CSV and export a crisp chart.
open csv-to-chart
Top text, bottom text, done in seconds.
open meme-maker
New tools land here first.
Tell us what you reach for every day.
02kits
Ready-made packs of files, tested and documented, so you start from something good.
Skill files that teach coding agents how your team reviews, refactors and tests.
skills-pack/ ├── code-review/SKILL.md ├── refactor/SKILL.md ├── write-tests/SKILL.md └── README.md
Chord progressions ready to drag into any DAW, sorted by key and mood.
midi-pack/ ├── major/ ├── minor/ ├── jazz/ └── README.md
Rules, moderation guides and report templates for online communities.
policy-pack/ ├── code-of-conduct.md ├── moderation.md ├── reporting.md └── README.md
03apps in the lab
We are tinkering with full web apps and decentralized apps on Polkadot. Each one gets shared here once it is ready, and not before.
Nothing to buy and nothing to sign. Just a peek at the workbench.
$ kittybin apps --list web in progress polkadot exploring public none yet $ kittybin apps --watch new apps show up here first
04why kittybin
The tools cost nothing to use.
Your files stay on your device.
Open a tool and start. No account.
The work happens in your browser.