Simple Tide Predictor – Online Approx High/Low Times
Enter a reference port's high tide and see estimated tides for the next 3 days using rule of twelfths. Educational.
UD5 Toolkit
Online Live Weather Prediction using real-time pressure data
Enter a reference port's high tide and see estimated tides for the next 3 days using rule of twelfths. Educational.
Record measurements for each window and generate a cutting list for plywood or track inventory of metal shutters. Print and store.
Enter a city to get current UV index forecast using open data (with local caching). Understand sun protection needs. No personal location used.
Calculate dew point or relative humidity from temperature and the other parameter. Also computes wet-bulb temperature. Meteorology reference.
Analyze letter/symbol frequency with an interactive bar chart and heatmap. Useful for breaking simple ciphers, linguistics, and SEO keyword analysis. Local processing.
Add realistic rain, snow, or fog to any photo. Control intensity and direction. Download the atmospheric result.
Paste a URL and see the og:title, description, image, and twitter card that will be used when shared. No server needed.
Enter a URL and see a waterfall of external scripts with their download size and execution time estimate. Identify performance culprits.
Fetch a page and list all loaded assets (CSS, JS, images) with their sizes. See total page weight. Quick performance check.
Paste a Content‑Security‑Policy header and get a human‑readable breakdown. See potential risks and suggestions.
Use your microphone to detect the dominant frequency of ambient sounds. Visualize the spectrum. Local Web Audio.
Enter temperature and wind speed (or humidity) to get the 'feels like' temperature. Safety guidelines included.
Paste a string of weather emojis and get a written weather forecast. Fun and educational emoji tool.
Paste text and get a rough analysis of its emotional tone (happy, sad, angry, etc.) based on keyword matching. Local.