Browser-based micro tools for modern knowledge workers: work calculators, generators, converters and utilities. The text, numbers and files you enter are processed in your browser and never uploaded to Kitfolio's servers.
Format JSON with indentation and syntax highlighting. Detects errors and validates.
Convert Unix timestamps to dates and Slack date syntax. Live current timestamp.
Convert rem, em, vw, % and ms to px (or seconds) instantly. Five CSS unit converters in one place.
Edit linear, radial and conic gradients visually and copy the CSS instantly.
Generate an 11-shade Tailwind palette (50-950) from one base HEX and copy the code.
Compare how an Open Graph image, title, and description appear across major platforms.
Live counts of characters, words, sentences and lines. With social limits.
Estimate monthly & yearly take-home pay from gross salary after Korea's insurances and taxes, with a full breakdown.
Estimate Korean statutory severance pay from your start date and the wages of your final three months.
Target vs. remaining hours and the daily average you need under flex work. Leave & holidays included.
Add and subtract time blocks to total up work hours. Built for timesheets and billing.
Convert hours, days, weeks and months instantly. Switch between calendar and work basis.
Convert Gregorian dates to Korean lunar dates and back. Covers 1901-2100 with leap months.
Growth rate, MoM, YoY from two values. Goal growth, required increase, reverse, and % difference too, via tabs.
Calculate CAGR (Compound Annual Growth Rate) from start, end, and years.
Compare campaign time progress vs budget burn rate to spot overpacing or underpacing instantly.
Calculate ROAS, CPA, CPC, CPM and CTR by tab. Reverse modes for target revenue, expected conversions, and required budget.
Analyze stage-by-stage conversion and drop-off rates for your funnel, then reverse-calculate required traffic.
Create a QR code from a URL, customize its shape and color, and download PNG or SVG.
Paste or upload a QR image, or scan it with your camera to view its link or text.
Merge, split, rotate, or delete PDF pages by tab. Everything runs in your browser.
Kitfolio is a collection of browser-based tools that help PMs, designers, developers, marketers, job seekers, office workers, and small business owners quickly solve the small, repetitive problems they run into during the workday. Counting characters, formatting JSON, calculating take-home pay, generating a QR code, merging PDFs: tasks you need often but would rather not search for every time are gathered in one place. There's nothing to install and no account to create; open the page and start using it.
Every Kitfolio tool runs inside your browser, not on a server. The text, numbers, and files you enter are never uploaded to Kitfolio's servers: all calculation and conversion happens on your device. That means the contents of a sensitive document stay on your machine, and the tools stay fast even on a slow connection. That promise is about what you enter into the tools. Loading the site itself still makes separate network requests to third-party services such as web fonts, analytics, and advertising, and the Privacy Policy sets out which is which.
Type what you're trying to do into the search box at the top, or narrow the list by role to jump straight to the tool you need. Each tool page includes clear how-it-works steps and a set of frequently asked questions, so even a tool you've never used is easy to pick up. Kitfolio isn't one giant app: it's a growing library of small, focused, practical tools, each with a clear purpose.