Security
Generate, validate and verify OAuth2 / OIDC PKCE (RFC 7636) code_verifier and S256 code_challenge pairs. Three modes: (1) generate a fresh verifier + challenge from cryptographically secure random bytes at 256/384/512/768-bit entropy, (2) audit a verifier you already have against the RFC — length (43–128), charset [A-Za-z0-9-._~] and ≥256-bit entropy, and (3) verify a verifier/challenge pair by recomputing BASE64URL(SHA256(verifier)). Optionally build the full authorization-request URL and token-exchange body. Complements the generic nonce-generator (which only emits a verifier+challenge pair) with RFC-compliance auditing and pair verification.
pkce-code-verifier-generatorSports
Compare a powerlifting total across four strength coefficient systems side by side: DOTS, Wilks (1994), IPF GL Points and Goodlift. Enter sex, body weight and three-lift total (squat + bench + deadlift) in kg or lb, and see each formula's points, coefficient, relative-strength tier and a progress bar showing how close the total is to each system's elite threshold. Complements the existing Wilks calculator by adding DOTS and IPF GL rather than replacing it.
powerlifting-coefficient-dots-ipf-calculatorText Processing
Convert English text to and from Pig Latin. Handles consonant clusters, vowel words, QU units, and capitalization.
pig-latin-converterMath & Numbers
Calculate buffer solution pH with the Henderson-Hasselbalch equation, or find the acid/base ratio needed for a target pH.
ph-buffer-calculatorAI Tools
Use MiniMax M3 vision to recognize a table from a PNG screenshot and export the reconstructed grid to Excel
png-table-screenshot-to-excelScience & Education
Solve 1D constant-acceleration kinematics problems and 2D projectile motion, with a full step-by-step derivation. Enter any 3 of the 5 quantities (displacement, initial velocity, final velocity, acceleration, time) and the solver finds the other two, showing each formula, the substitution, and the result. For projectiles, enter launch speed/angle/height to get range, time of flight, and max height.
physics-kinematics-problem-solverAI Tools
Rewrite a raw prompt into a more structured version, score clarity and ambiguity, and show prompt improvement hints
prompt-optimizerGames
Simulate Texas Hold'em equity against random opponents, estimate win and tie rates, and list next-card improvement outs
poker-out-simulatorMath & Numbers
Convert radians to degrees with configurable decimal precision
radians-to-degreesMedia
Convert Fujifilm RAF RAW files to JPEG format. Automatically extracts image dimensions and metadata from the RAW file.
raf-to-jpgMedia
Convert Fujifilm RAF RAW files to PNG format. Automatically extracts image dimensions and metadata from the RAW file.
raf-to-pngMedia
Convert a headerless raw pixel buffer file to a JPEG image. You must provide the image dimensions, channel count, and bit depth.
raw-to-jpg