Switch through the web dev tools.
Dozens of free web dev tools in one tab. Paste your input and get the result instantly. No signup, no upload, nothing leaves your machine.
No tools match your search.
stdin in.
stdout out. Instantly.
Every web dev tool is the same simple flip: drop in a value on the left, get exactly what you need on the right. No queues, no waiting on a server.
rgb(123, 136, 199)
▌
How the web dev tools work.
Pick a tool
Choose any web dev tool from the grid above. There's no account and no setup. It opens ready to use.
{
"user": "ada",
"id": 42
}▌
Add your input
Paste your code, text, or value, or drop in a file. Everything is processed locally in your browser.
user,id
ada,42
Copy the result
Get the formatted, converted, or generated output instantly and drop it straight back into your project.
About to launch a site with no backend?
A portfolio or freelance website that still needs to receive contact requests? Easy. Host it on GitHub Pages or Cloudflare, add a SendForm contact form, and protect it with PrivCaptcha.
SendForm.net
PrivCaptcha.com
The old way, or the devswitch way.
Every visit to an ad-stuffed tool site costs you minutes, a signup, and your data. DevSwitch answers in 0.2 seconds, free and fully private. Flip the switch and see for yourself.
No signup · no upload · nothing leaves your browser
FAQ.
Are the DevSwitch web dev tools free to use?+
Yes. Every web dev tool on DevSwitch is completely free, with no usage limits, no ads-wall, and no trial period. Open a tool and start using it immediately.
Do I need to create an account or sign in?+
No. There is no signup, login, or email required. Pick a tool from the list above and it works right away.
Are my code, files, or data uploaded to a server?+
The code, text, and files you paste or open are processed right in your browser and stay on your own device. They aren't uploaded to a server. You can use DevSwitch without worrying about sensitive snippets leaving your machine.
Do these web dev tools work on mobile and tablets?+
Yes. The web dev tools run in any modern browser, so they work on phones and tablets as well as on desktop.
What's the difference between beautifying and minifying code?+
Beautifying (formatting) re-indents code to make it readable, while minifying strips whitespace and comments to make files as small as possible for production. DevSwitch offers both for JavaScript, CSS, HTML, and JSON.
When would I use a JSON, CSV, XML, YAML, or TSV converter?+
Whenever you need to move data between formats, for example turning an API's JSON response into a CSV you can open in a spreadsheet, or converting a YAML config into JSON. DevSwitch converts between all of these formats in any direction.
How do I convert a number between binary, decimal, hexadecimal, and octal?+
Use the number converter tools above. Type or paste a value in one base and get the equivalent in the others instantly, handy for debugging bitmasks, color values, file permissions, and low-level code.
What's the difference between RGB and HEX colors?+
They describe the same color in different notations: HEX (like #7b88c7) is common in CSS, while RGB (like rgb(123, 136, 199)) is easier to adjust channel by channel. DevSwitch's color tools convert between them and let you pick colors visually.
What is Base64 and when would I encode or decode it?+
Base64 turns binary data, such as an image, into plain text so it can be embedded directly in HTML, CSS, or JSON without a separate file. Use the encode tool to inline an image as a data URI, and the decode tool to turn a Base64 string back into a viewable image.
How can I test a regular expression?+
Paste your pattern and some sample text into the RegEx tools to see matches highlighted live as you type. It's the quickest way to debug a tricky pattern before dropping it into your code.
What can I do with the HTML, CSS, and JavaScript playground?+
The playground lets you write HTML, CSS, and JavaScript side by side and see the rendered result update instantly, ideal for prototyping a snippet, reproducing a bug, or testing an idea without setting up a project.
How do I compare two files or blocks of text?+
Paste both versions into the diff tool to see exactly what was added, removed, or changed, line by line, useful for reviewing edits, config changes, or API responses.