JSON Formatter & Validator
Format, validate and minify JSON with clear error messages.
Open ToolFree Online Developer Tools
Format JSON, test regular expressions, convert colors, compare code and more. Every tool runs directly in your browser, with no sign-up.
- 20 tools
- Free to use
- No sign-up
- Runs in your browser
All tools
CSS Gradient Generator
Build linear and radial gradients and copy the CSS.
Open ToolBase64 Encoder & Decoder
Encode and decode text as Base64, with Unicode support.
Open ToolRegex Tester
Test regular expressions with highlighted matches and groups.
Open ToolURL Encoder & Decoder
Percent-encode and decode URL components or full URLs.
Open ToolHTML, CSS & JavaScript Minifier
Minify HTML, CSS or JavaScript and see the size reduction.
Open ToolColor Converter & Contrast Checker
Convert HEX, RGB and HSL and check WCAG contrast.
Open ToolText & Code Diff Checker
Compare two texts and highlight added and removed lines.
Open ToolJWT Decoder
Decode a JSON Web Token and read its header and payload. Signature is not verified.
Open ToolMeta Tag Generator
Generate HTML meta tags for title, description, canonical, robots and social sharing.
Open ToolUUID Generator
Generate random UUID v4 values securely in your browser, one or many at a time.
Open ToolCron Expression Generator
Build a cron expression with clear fields and get a plain-language explanation.
Open ToolSQL Formatter
Format SQL queries with indentation and line breaks. Keeps strings and comments intact.
Open ToolRobots.txt Generator
Create a robots.txt file with user-agent rules, allow and disallow paths and a sitemap URL.
Open ToolHTML Entity Encoder & Decoder
Encode special characters as HTML entities or decode entities back to text.
Open ToolJavaScript Playground
Write and run JavaScript in an isolated sandbox and see console output and errors.
Open ToolHTTP Status Code Lookup
Search HTTP status codes by number or name and read what each one means.
Open ToolFavicon Generator
Turn a PNG, JPEG or WebP image into favicon PNG sizes and a favicon.ico file.
Open ToolWebP to PNG Converter
Convert WebP images to PNG in your browser, keeping transparency where possible.
Open ToolHTML Table Generator
Build an HTML table: set rows and columns, edit cells, preview it and copy the code.
Open Tool
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Why use ILoveDev
Private by design
Your code and text are processed in your browser with JavaScript. The tool pages do not upload what you paste.
Fast and focused
Each tool does one job and loads quickly, with no sign-up, no installs and no limits on how often you use it.
Explained, not just built
Every tool page has usage steps, a worked example, common mistakes and answers to frequent questions.
How it works
- Pick a tool from the list above, or search for it by name.
- Paste your input or choose your settings. Results appear straight away.
- Copy the output or download it, then clear the page when you are done.
Frequently asked questions
Are the tools really free?
Yes. All tools are free to use, with no account and no usage limit.
Is my data sent to a server?
No. The tools run in your browser, so the text you paste stays on your device. See the Privacy Policy for details.
Do the tools work offline?
After a page has loaded, most tools keep working without a connection because the processing is done locally. Reload the page once you are back online.
Which browsers are supported?
Any current version of Chrome, Edge, Firefox or Safari, on desktop or mobile.
Can I suggest a new tool?
Yes. Send ideas or bug reports through the contact page.
About these tools
ILoveDev offers twenty small utilities for everyday front-end work. Each tool has its own page with usage steps, an example and answers to common questions. Processing happens in your browser with JavaScript, so pasted code and text are not uploaded by these pages.
The JavaScript minifier uses the open-source Terser library, bundled with the site. Read more on the About page or the Privacy Policy.