Developer tools
Choose a task, open the tool, and review its result. Every listing below opens a working browser interface directly.
35 tools available
JSON Formatter
Beautify, indent & minify JSON.
JSON Validator
Validate JSON & see errors.
XML Formatter
Pretty-print XML documents.
HTML Formatter
Indent & tidy HTML markup.
Base64 Encode/Decode
Convert text ↔ Base64.
URL Encode/Decode
Encode & decode URLs.
UUID Generator
Random v4 UUIDs in bulk.
JSON Beautifier
Pretty-print JSON.
JSON Minifier
Compact JSON to one line.
XML Validator
Check XML is well-formed.
HTML Minifier
Shrink HTML for production.
HTML Beautifier
Indent & tidy HTML.
CSS Beautifier
Format & indent CSS.
JS Beautifier
Format & indent JavaScript.
SQL Formatter
Pretty-print SQL queries.
MD5 Generator
MD5 hash of any text.
SHA1 Generator
SHA-1 hash of any text.
SHA256 Generator
SHA-256 hash of any text.
Base64 Encoder
Text → Base64.
Base64 Decoder
Base64 → text.
URL Encoder
Percent-encode text.
URL Decoder
Decode percent-encoding.
JWT Encoder
Sign a JWT (HMAC).
Diff Checker
Compare two texts line by line.
Cron Expression Generator
Build & explain cron schedules.
.htaccess Generator
Apache rules: HTTPS, cache, gzip.
Nginx Config Generator
Server blocks with SSL & proxy.
Docker Compose Generator
Build a docker-compose.yml.
.env File Generator
Normalize keys into a .env file.
JSON Compare Tool
Deep-diff two JSON objects.
CSV Diff Checker
Row-level added/removed diff.
HTML Entities
Encode & decode entities.
JSON to CSV
Flatten JSON into CSV.
CSV to JSON
Parse CSV into JSON.
Markdown to HTML
Render Markdown to HTML.