Dev tools
Format, encode, hash, test and convert text. Nothing is uploaded.
JSON Formatter
Pretty-print or minify JSON. Validates in the browser.
Word Counter
Words, characters, sentences, reading time.
Regex Tester
Test a JavaScript regular expression against text.
JWT Decoder
Read header and payload. Does not verify signatures.
Base64 Encode / Decode
Encode or decode Base64 text instantly.
Hash Generator
SHA-256 and SHA-1 in the browser.
UUID Generator
v4 UUIDs from Web Crypto.
Unix Timestamp Converter
Epoch seconds to date, and date to epoch.
Find and Replace
Find text and replace it. Stays in this tab.
Text Compare
Line-by-line diff of two texts.
Markdown to HTML
Headings, bold, links. Naive convert.
CSV to JSON
Paste CSV, get JSON. First row is headers.
JSON to CSV
Paste a JSON array of objects. Get CSV.
URL Encoder / Decoder
encodeURIComponent and back.
HTML Encoder / Decoder
Escape or unescape HTML entities.
HTML Formatter
Indent HTML tags. Copy and go.
CSS Minifier
Strip comments and extra whitespace. Copy.
JS Minifier
Strip comments and extra space. Copy.
Slug Generator
URL slugs from a title. Copy and go.
UTM Builder
Campaign URLs. Copy the link.
Meta Tag Generator
Title, description, OG tags. Copy the HTML.
robots.txt Generator
User-agent, Disallow, Sitemap. Copy the file.
Cron Expression Explainer
Five-field cron in plain English.
Case Converter
lower, UPPER, Title, camel, snake, kebab.
Strip HTML Tags
Paste HTML, get visible text. Copy.
Extract Emails
Pull email addresses out of text.
Mailto Link Generator
to, subject, body. Copy the link.
Line Sorter
Sort, reverse, or drop duplicate lines.
Word Frequency
Count how often each word appears.
Remove Line Breaks
Join wrapped lines into a paragraph.
PX to REM
Pixels and rem, from a root font size.
Binary / Hex / Decimal
Convert between binary, hex and decimal.
ASCII Converter
Characters to codes and back.
Reverse Text
Flip characters or words. Copy and go.
Caesar Cipher
Shift letters. ROT13 is shift 13.