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CSS Toolkit
8 free CSS tools. No login. No nonsense. Runs in browser
Free browser-based tools for frontend developers. Convert PX to REM/EM, generate box shadows, border radius, text shadows, CSS animations, decode JWTs, and test nth-child selectors. No account. No server. Everything runs client-side.
Hey Product Hunt 👋
I built the CSS Toolkit because I kept hitting the same friction every day as a frontend developer.
Mid-build, mid-thought, and I'd have to stop to convert a px value, tweak a box shadow by guessing values and refreshing the browser, or look up nth-child syntax for the fifth time that month.
None of it is hard. All of it is a context switch that breaks focus.
So I built 8 tools to eliminate that loop:
→ PX to REM Converter: with configurable root size and bulk conversion
→ PX to EM Converter: context-aware, specify parent font size
→ Box Shadow Generator: live visual editor, multiple layers, copy-ready CSS
→ Border Radius Generator: per-corner control including elliptical syntax
→ Text Shadow Generator: stacked layers, live preview
→ CSS Animation Generator: keyframes + shorthand output, live preview
→ JWT Decoder: paste token, get decoded header and payload instantly
→ nth-child Tester: type any expression and see which elements match live
Three things I got right from the start:
Everything runs in the browser. No server. No data collection. What you type stays on your machine.
No login, no signup, no free tier with limits. Just open and use.
100/100 PageSpeed scores on every tool page.
The hardest part has not been building; it's been getting developers to find it. That's honestly why I'm here today.
If you use CSS daily, try it: csstoolkit.net
Would love feedback on what's missing or what could be better. What CSS task do you still do manually that you wish had a tool?
About CSS Toolkit on Product Hunt
“8 free CSS tools. No login. No nonsense. Runs in browser”
CSS Toolkit was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #158 on the daily leaderboard. Free browser-based tools for frontend developers. Convert PX to REM/EM, generate box shadows, border radius, text shadows, CSS animations, decode JWTs, and test nth-child selectors. No account. No server. Everything runs client-side.
On the analytics side, CSS Toolkit competes within User Experience, Website Builder and Web Design — topics that collectively have 384.5k followers on Product Hunt. The dashboard above tracks how CSS Toolkit performed against the three products that launched closest to it on the same day.
Who hunted CSS Toolkit?
CSS Toolkit was hunted by Khalid Khan. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of CSS Toolkit including community comment highlights and product details, visit the product overview.
Khalid Khan