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Images, Audio & Video486Math, Date & Finance415Design & Color274Conversion & Encoding158Text & Writing149Data & Tables144Developer & Web139Documents & PDF117

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NSFW Image Content Detector

json

AI Tools

AI-powered image content safety detector using NSFWJS to classify potentially inappropriate content with fallback analysis, supporting GIF/Animated WebP/APNG and JPEG/PNG/WEBP.

nsfw-image-detector

Em-dash & Typographic Purifier

html

Text Processing

Convert AI-typical plain ASCII into proper typography: -- and --- become en/em dashes, straight quotes become curly/smart quotes (locale-aware), ... becomes a single ellipsis …, spaced dashes are tightened, and repeated spaces collapse — while fenced ``` code blocks and `inline` code are left untouched.

em-dash-and-typographic-purifier

Email Signature HTML Builder

html

Design

Generate a clean, copy-paste HTML email signature that renders correctly in Gmail, Outlook, and Apple Mail — with avatar/logo, social icons (auto-detected from your links), accent color, light/dark/auto theme, and a table-based email-safe layout using inline styles. Copy the raw HTML and paste straight into your mail client.

email-signature-html-builder

EAN-8 Barcode Validator

text

Validation

Validate 8-digit EAN-8 / GTIN-8 product barcodes with check-digit verification, GS1 country prefix and packaging breakdown.

ean8-validator

FLAC to ALAC Converter

file

Media

Convert FLAC audio files to ALAC (Apple Lossless) in an M4A container while preserving lossless quality and metadata when available

flac-to-alac

HMAC Generator & Verifier

html

Security

Compute an HMAC message-authentication signature over a message + shared secret using SHA-1/SHA-2/SHA-3/BLAKE2, or verify an incoming signature against the secret — with webhook presets for Stripe / Slack / GitHub and constant-time comparison

hmac-generator-verifier

Image Palette to Design Tokens

html

Design

Extract a dominant color palette from an image (k-means clustering), then export it as CSS variables, SCSS variables, a Tailwind config, or JSON design tokens — with named colors and an auto-generated shade scale for each

image-to-design-tokens

ISIN Validator

text

Validation

Validate International Securities Identification Numbers (ISO 6166 ISIN) with Luhn check-digit verification, country/issuer prefix and NSIN breakdown.

isin-validator

Luhn Checksum Calculator

text

Validation

Validate or generate numbers using the Luhn algorithm (mod-10). Works for credit cards, IMEI, IMEISV, SIN, NPI and any custom Luhn-based identifier.

luhn-checksum

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