Free Developer Tools
Format, encode, convert and generate common developer data.
JSON Formatter
Format, validate and minify JSON.
Base64 Encoder/Decoder
Encode or decode Base64 text.
CSV to JSON
Convert simple CSV data into formatted JSON.
JSON to CSV
Convert an array of JSON objects into CSV text.
URL Encoder/Decoder
Encode or decode URL text safely in your browser.
SHA-256 Hash Generator
Generate a SHA-256 hash locally in your browser.
UUID Generator
Generate random UUID v4 identifiers locally.
URL Slug Generator
Turn titles and phrases into clean lowercase URL slugs for websites and blogs.
Meta Description Length Checker
Check the character length of an SEO meta description and get a practical length hint.
Robots.txt Generator
Generate a simple robots.txt file with a crawl rule and optional sitemap URL.
Inspect data before converting it
JSON Formatter parses JSON and displays errors before producing readable or compact output. CSV to JSON is intended for simple comma-separated records, while JSON to CSV creates a flat table from an array of objects. Preserve a source copy and check a small known example first.
Base64 and URL encoding change representation rather than hide information. SHA-256 creates a digest, not encrypted text. UUIDs identify records rather than grant access. The robots.txt generator writes crawler instructions, but robots.txt is not a way to protect private files or reliably remove indexed URLs.