dev-tools

Base64 Encoder

Encode UTF-8 text to a Base64 string.

Base64 Decoder

Decode a Base64 string back to UTF-8 text.

URL Encoder

Percent-encode text for safe use in a URL.

URL Decoder

Decode a percent-encoded URL component back to text.

UTF-8 Encoder

Encode text into its UTF-8 byte representation as hex, decimal, or binary.

UTF-8 Decoder

Decode UTF-8 bytes (hex, decimal, or binary) back into text.

JSON Formatter

Repair and pretty-print JSON with a chosen indent size (2, 4, or 8).

CSV to JSON

Convert CSV text into a JSON array of row objects.

CSS Formatter

Beautify or minify CSS.

HTML Formatter

Beautify (format) or minify HTML.

Diff Viewer

Compute a line-by-line diff between two text blocks.

JWT Decoder

Decode a JWT into its header and payload (no signature check).

Hash Generator

Compute MD5, SHA-1, SHA-2, and SHA-3 digests of the given text.

Shasum

Compute SHA checksums of the given text.

Color Converter

Convert a HEX color into RGB, HSL, and HSV representations.

Timestamp Converter

Convert a Unix timestamp to an ISO date, or an ISO/parseable date to a Unix timestamp. Provide exactly one of `timestamp` or `date`.

Size Unit Converter

Convert a length between units (px, in, cm, mm, m, km, ft, yd, mi, pt, pc, em, rem, vw, vh).

UUID Generator

Generate one or more UUIDs (v4 or time-ordered v7).

Cron Builder

Validate a cron expression and describe its next run times in plain language.

Country Code Lookup

Look up an ISO 3166-1 country by its alpha-2/alpha-3 code or by name. Provide exactly one of `code` or `name`.

IP Lookup

Geolocate an IP address (country, region, city, ISP, ...).

My IP

Return the caller's public IP address and request metadata as seen by the server.

Share Content

Publish a text snippet and get a permanent shareable link. Set type to "markdown" or "mermaid" to have the share page render it as formatted HTML or a diagram. Anonymous shares are immutable and capped at 1 MB; fetch the raw text later from GET /api/share-content/<id>?format=text.