Security

Parse an X.509 SSL/TLS certificate (paste PEM or upload .pem/.crt) and inspect subject, issuer, validity period with expiry status, public key, signature algorithm, serial, SANs, key usage and fingerprint. Like openssl x509 -text, visualised. Runs locally.

Security

Compute the CRC32 checksum (IEEE 802.3 polynomial) of any text or raw bytes. Output as hex, decimal or binary. Accepts plain text (UTF-8) or raw bytes via hex/base64 input.

Design

Fetch a remote image URL, extract dominant colors, export code-ready palette files, and review contrast ratios

Development

Parse a 5-part / 6-part / Quartz cron expression into a plain-language schedule description, show the field-by-field breakdown, and list the next N execution times in any IANA timezone — with an AI-generated natural-language explanation in your language

Data Processing

Upload a CSV file or paste CSV text, remove duplicate rows using exact or fuzzy matching, and download a cleaned CSV.

Design

Visualize a CSS cubic-bezier easing curve, preview it live on position/opacity/scale, pick presets, and export copy-ready CSS

Development

Browse the complete ASCII character table (0–127) with decimal, hex, octal, binary, HTML entity, and control character names; filter by code or name

Format Conversion

Encode and decode Base64URL (URL-safe Base64 variant used by JWT/JWS/JWE), with conversions between standard and URL-safe Base64

Design

Generate a clamp() expression from min and max viewport and font-size bounds, with copy-ready CSS and preview data

Security

Generate Argon2id password hashes with tunable memory, iterations, parallelism, salt length, and PHC output

Health

Calculate a symmetric per-side plate setup for a target barbell weight, with kg/lb support and custom inventory

Math & Numbers

Convert arcminutes to degrees with configurable decimal precision