Free online developer tools
JSON formatting, regex testing, hashes, Base64 and URL encoding, timestamps and an API monitor: the small utilities that come up mid-debug.
11 Developer tools
- JSON FormatterFormat, beautify, validate and minify JSON online. Find syntax errors instantly and make JSON readable. Free, and your data never leaves your browser.
- Code BeautifierBeautify and format messy or minified HTML, CSS, JavaScript and TypeScript online. Fix indentation in one click. Free and no sign-up; formats in your browser (Java via our server).
- Base64 ToolEncode text to Base64 or decode Base64 back to plain text instantly. Free online Base64 converter that runs locally in your browser - nothing is sent to a server.
- URL ToolEncode or decode URLs and query strings online. Convert special characters to percent-encoding (like %20) and back, instantly and free, right in your browser.
- JSON to CSVConvert JSON to CSV online for Excel or Google Sheets. Flattens nested objects and detects headers automatically. Free, and your data stays in your browser.
- Timestamp ConverterConvert Unix timestamps in seconds or milliseconds to human-readable dates, and dates back to epoch time. Shows local time and UTC. Free online epoch converter.
- Hash GeneratorGenerate MD5, SHA-1 and SHA-256 hashes from any text online. Verify checksums and compare hashes. Free, and all hashing runs locally in your browser.
- Htpasswd GeneratorGenerate .htpasswd entries for Apache and Nginx basic authentication. Create password hashes for your users instantly. Free htpasswd generator, runs in your browser.
- Regex TesterTest and debug regular expressions online with live match highlighting. Toggle global and case-insensitive flags and see every match as you type. Free regex tester.
- Comment RemoverRemove comments from JavaScript, Python, CSS, HTML, PHP, Java and C++ code in one click. Clean up source code for production and shrink file size. Free and private.
- API MonitorTest any API with custom headers, auth tokens and JSON assertions. Monitor it every 5 minutes with email pass/fail reports, Slack alerts and a free status page.