Why Do Developers Choose JustInBrowser?
Because you've got better things to do than deal with slow tools, paywalls, and privacy nightmares. Here's what actually sets us apart.
What Makes JustInBrowser Different
Instant Access, Zero Setup
No downloads, no installations, no account creation. Just open your browser and start working. That's it. You'll be testing APIs or formatting JSON in literal seconds, not after some five-minute setup ritual.
Actually Free. No Catch.
Yeah, we mean it. No "freemium" BS, no trial periods, no feature gates. Everything's free because these are tools I built for myself and figured others might need them too. Simple as that.
Your Data Stays Yours
Everything runs client-side in your browser. We're not logging your API keys, we're not storing your JSON files, we're not even tracking what tools you use. Your data literally never touches our servers because there are no servers.
Built for Speed
No loading spinners, no server roundtrips, no artificial delays. Everything processes instantly because it's running right there in your browser. Test an API endpoint? Done. Format 10MB of JSON? Also done.
Made by Developers, for Developers
Not built by some product team that's never opened a terminal. These tools solve real problems I've actually had. Clean UIs, keyboard shortcuts, and zero unnecessary fluff.
Constantly Growing
Started with a few basic utilities. Now we've got 20+ tools and counting. Whenever I need something that doesn't exist yet (or existing options suck), I build it and add it here.
JustInBrowser vs. Everything Else
Let's cut through the marketing speak and compare what actually matters when you're trying to get work done.
| Feature | JustInBrowser | Paid Tools | Most Free Tools |
|---|---|---|---|
| Setup Time | Instant | 5-10 minutes | 2-5 minutes |
| Monthly Cost | $0 | $10-$30 | $0 (limited) |
| Data Privacy | Client-side only | Stored on servers | Often tracked |
| Ads & Popups | None | None | Everywhere |
| Performance | Instant | Fast | Slow |
| Feature Limits | None | None | Many |
When Developers Reach for JustInBrowser
Real scenarios where having instant access to lightweight tools makes all the difference.
Testing Third-Party APIs
You're integrating a new payment gateway, and their docs are... let's say "creative." Instead of installing Postman and signing in just to test one endpoint, you pop open our API tester, fire off a request, and you're done in 30 seconds.
Wrangling Ugly JSON Responses
Backend returns a massive blob of minified JSON. You need to actually read it. Paste it into our JSON viewer, it's formatted and syntax-highlighted instantly. No extensions, no npm packages, no fuss.
Fighting with Regex Patterns
Your email validation regex is broken, and you've been staring at it for 20 minutes. Throw it into our regex tester with some sample inputs, see exactly where it's failing, fix it, and move on with your life.
Quick Image Edits Before Deployment
Your designer sent you a 5MB hero image. You need to resize, compress, and maybe crop it before pushing to production. Do all three in our image tools, download, commit. Done in under a minute.
Who Actually Uses JustInBrowser?
Full-Stack Developers
Developers who need quick utilities between context switches. Testing APIs, formatting data, generating passwords—standard daily stuff.
Frontend Engineers
People working on UI/UX who need fast access to color tools, image converters, and text generators without breaking flow.
Indie Hackers & Freelancers
Solo developers or small teams who can't justify paying $30/month for tools they'll use twice a week.
Stop Paying for Tools. Start Using Them.
Join thousands of developers who've ditched bloated paid tools and got back to actually building stuff.
Common Questions About JustInBrowser
Is JustInBrowser really completely free?
Yes. There's no premium tier, no feature gates, no "free trials." Every tool is 100% free to use, forever. I built these for myself first, and sharing them costs me basically nothing since everything runs in your browser.
How is JustInBrowser different from other free tools?
Most "free" tools are slow, ad-riddled, or collecting your data to sell. JustInBrowser runs entirely in your browser (so it's fast and private), has zero ads, and I'm not tracking you. Plus, the UI doesn't suck.
Do I need to create an account?
Nope. No accounts, no sign-ups, no email verification. Just open the tool and use it. That's the whole point—zero friction.
Is my data safe and private?
Absolutely. Everything happens client-side in your browser. Your files, API keys, regex patterns—none of it ever leaves your device. We literally can't see your data because it never reaches our servers.
Can I use these tools for commercial projects?
Go for it. Use these tools for personal projects, client work, enterprise stuff—whatever. There are no usage restrictions, no licensing fees, no strings attached.
What tools are available on JustInBrowser?
We've got 20+ tools and counting: API tester, JSON formatter/viewer, regex tester, Base64 converter, image compressor, color gradient generator, QR code generator, password tools, cron generator, markdown converter, and a bunch more. Check the homepage for the full list.