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Type any web feature and see which browsers support it, version by version, alongside how many people actually use each one.
Opens in a new tab. We do not control this site and it may have changed since we catalogued it.
Can I use sits in Unreasonably Useful under Learn, filed as instant.
About this category: Sites that quietly do a job you would otherwise pay for or install software for. Included because being this good for free is genuinely strange.
Yes. Can I use is free to use and needs no account.
No. You can use Can I use without signing up for anything.
Not well. We file Can I use as desktop only, so open it on a laptop or desktop computer.
Yes, we file it as safe for work. It also works muted.
We file it as "Instant": Good within five seconds of loading.
Translates a cron expression into plain English as you type it, then tells you when it will next fire. Ends a very specific argument.
Paste two blocks of text and get a colour-coded diff back immediately. Also handles PDFs, images and spreadsheets.
Paste a website address and learn whether it is down for the whole world or only for you. Settles the argument with your router in seconds.
Full flowchart, floorplan and network-diagram editor that saves to your own drive and has never once asked anyone for money.
Turns a snippet of code into a tidy image with your choice of theme, font and window frame. The tool behind a lot of shared code screenshots.
Thirty-odd card games with competent bots, no accounts and nothing covering the table. The default answer to fancying a game.
Estimated fortunes for anybody famous, sourced loosely, and impossible to stop clicking once you look up the first one.
Per-component checklists — buttons, forms, cards, empty states — covering the things everyone forgets until review.
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