ENNL

joey@tools:~$ ls

Developer tools, in your browser.

// Coming soon: 55 tools.

Encode / decode

  • Base64

    Encode and decode text and files, URL-safe too.

    soon

  • URL encode / decode

    Escape and unescape URLs and query strings.

    soon

  • JWT decoder

    Read the claims, check the expiry and verify the signature.

    soon

  • HTML entities

    Convert characters to entities and back.

    soon

  • Unicode inspector

    Code points, bytes and invisible characters in a text.

    soon

  • Hex / Base32

    Text and bytes to hex or Base32, and back.

    soon

  • String escape

    Escape a string for JSON, JavaScript or a regex.

    soon

Data & formats

  • JSON formatter

    Format, validate and minify, with a tree view.

    soon

  • YAML ↔ JSON

    Convert between YAML and JSON.

    soon

  • JSON → TypeScript

    Types and a Zod schema from a JSON example.

    soon

  • Diff

    Compare two texts or two JSON documents.

    soon

  • CSV viewer

    Open a CSV file as a sortable table.

    soon

  • JSONPath tester

    Try a JSONPath query against a document.

    soon

  • SQL formatter

    Make a long query readable.

    soon

  • .env ↔ JSON

    Convert environment files to JSON and back.

    soon

XML

  • XML formatter

    Format XML and check it is well-formed.

    soon

  • XPath tester

    Evaluate XPath, namespaces included.

    soon

  • XML ↔ JSON

    Convert between XML and JSON.

    soon

Text

  • Regex tester

    Matches, groups, flags and replace.

    soon

  • Case converter

    camelCase, snake_case, kebab-case and more.

    soon

  • Counter

    Words, characters and reading time.

    soon

  • Lines

    Sort, dedupe, trim and number lines.

    soon

  • Markdown preview

    Write Markdown and see the result.

    soon

  • Slug + lorem ipsum

    Make a URL slug, or filler text.

    soon

Generate & security

  • UUID / ULID / NanoID

    Generate IDs, one or a thousand.

    soon

  • Password generator

    Passwords and passphrases, with their strength.

    soon

  • Hash

    SHA checksums of text and files, with compare.

    soon

  • HMAC

    Sign a message with a secret key.

    soon

  • Certificate decoder

    Subject, validity and algorithm of a PEM certificate.

    soon

  • QR code

    For a URL, text or Wi-Fi, as SVG or PNG.

    soon

  • TOTP generator

    One-time codes from a secret, for testing 2FA.

    soon

  • SRI hash

    The integrity attribute for a script or stylesheet.

    soon

  • CSP builder

    Build and read a Content Security Policy.

    soon

Date & time

  • Unix timestamp

    Seconds or milliseconds to a date, and back.

    soon

  • Cron explainer

    What a cron expression means and when it runs next.

    soon

  • Date difference

    Days and working days between two dates.

    soon

  • Timezone planner

    Find a meeting time across time zones.

    soon

Front-end & CSS

  • Colour converter

    HEX, RGB, HSL and OKLCH.

    soon

  • Contrast checker

    WCAG 2.2 contrast, with the nearest colour that passes.

    soon

  • clamp() calculator

    Fluid sizes, and px to rem.

    soon

  • Gradient + shadow

    Build a gradient or box shadow and copy the CSS.

    soon

  • Cubic-bezier editor

    Shape an easing curve and see it move.

    soon

  • SVG optimiser

    Shrink an SVG, or turn it into a data URI.

    soon

  • Image resizer

    Resize an image, or make a favicon set.

    soon

  • Open Graph preview

    See how a page looks when it is shared.

    soon

Web & HTTP

  • URL parser

    Split a URL into its parts and query parameters.

    soon

  • curl → fetch

    Turn a curl command into fetch code.

    soon

  • HTTP status + MIME

    Look up a status code or a media type.

    soon

  • User-agent parser

    Browser, engine and device from a user-agent string.

    soon

Dev reference

  • This browser

    Viewport, pixel ratio, preferences and key events, for bug reports.

    soon

  • Calculators

    Number bases, chmod, data sizes, CIDR and semver ranges.

    soon

Dutch test data

  • Dutch test data

    Check and generate valid fake BSNs, IBANs and postcodes.

    soon

Team

  • Planning poker

    A deck of cards for estimating together.

    soon

  • Timebox timer

    A timer for stand-ups and timeboxes.

    soon

  • Random picker

    Pick who starts, with saved names.

    soon