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Encode & decode
Base64 encoder
Encode and decode Base64, with UTF-8 and URL-safe handling
Encode
Encode (URL-safe)
Decode
Load sample
Clear
Plain text
0 chars
Base64
0 chars
Copy
Download
Output → input
JSON ↔ YAML
Convert between JSON and YAML in either direction
Convert
CSV ↔ JSON
Convert delimited data to JSON records and back
Convert
Code formatter
Pretty-print, minify and validate JSON, XML and SQL
Convert
JSON to TypeScript
Generate TypeScript interfaces from a JSON sample
Convert
curl to code
Turn a curl command into fetch, Python, Go or PowerShell
Convert
JSON to elmer keys
Turn a JSON object into elmer key set, key get or dep key commands
Convert
Query params to JSON
Split a query string into structured JSON and back
Convert
Number base converter
Convert between binary, octal, decimal, hex and any base to 36
Convert
Timestamp converter
Convert between Unix epochs, Epic DAT, DTE and Instant values, and dates in any time zone
Convert
Base64 encoder
Encode and decode Base64, with UTF-8 and URL-safe handling
Encode & decode
URL encoder
Percent-encode and decode URLs and query components
Encode & decode
HTML entity encoder
Escape and unescape HTML entities
Encode & decode
Backslash escape
Escape and unescape string literals for code and config
Encode & decode
JWT decoder
Read a JWT's claims and verify its signature against a key you paste
Inspect
Regex tester
Test a regular expression against sample text with match highlighting
Inspect
Diff checker
Compare two blocks of text line by line
Inspect
Cron parser
Explain a cron expression and preview its next runs
Inspect
HAR file viewer
Inspect requests, timings and headers in a HAR capture
Inspect
User agent parser
Break a user agent string into browser, OS and device
Inspect
Hash generator
Compute SHA-1, SHA-256, SHA-384 and SHA-512 digests
Generate
UUID generator
Generate v4 and v7 UUIDs in bulk
Generate
Password generator
Generate strong random passwords and passphrases
Generate
JWT generator
Build and sign a JWT with an HMAC secret
Generate
QR code generator
Turn text or a URL into a downloadable QR code
Generate
Lorem ipsum
Generate placeholder paragraphs, sentences and words
Generate
Case converter
Convert between camel, snake, kebab, pascal and title case
Text
Slugify
Turn any text into a URL-safe slug
Text
Text sorter
Sort, reverse, shuffle and dedupe lines
Text
Whitespace remover
Strip trailing, leading and duplicate whitespace
Text
Character counter
Count characters, words, lines and bytes
Text
Markdown preview
Render Markdown to HTML side by side
Text
HTML to Markdown
Convert an HTML fragment into Markdown
Text
Image to Base64
Turn an image into a Base64 data URI
Image
Base64 to image
Decode a Base64 data URI back into a downloadable image
Image
WebP converter
Convert PNG and JPEG images to WebP in the browser
Image
Image resizer
Resize and crop images without uploading them
Image
SVG optimizer
Strip metadata and shrink SVG markup
Image
Favicon generator
Produce a favicon set from a single source image
Image
Color converter
Convert between hex, RGB, HSL and OKLCH
Color
Contrast checker
Check colour pairs against WCAG contrast thresholds
Color
Gradient generator
Build CSS gradients and copy the declaration
Color
What is my IP
Your public IP, IPv4 or IPv6, and the edge that served you
Network
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