.gitignore Generator - Online for Any Tech Stack
Select your OS, IDE, and programming language to generate a complete .gitignore file. No typing required.
UD5 Toolkit
Power Level
Weakness
Kryptonite“After a fateful encounter with cosmic energy, Captain Thunder discovered the power to control lightning.”
Select your OS, IDE, and programming language to generate a complete .gitignore file. No typing required.
Generate a realistic‑sounding exoplanet designation (e.g., Kepler‑442b) and a sci‑fi planet description. For worldbuilding.
Build a proper <meta name='viewport'> tag with width, initial‑scale, and user‑scalable options. Avoid common mobile rendering issues.
Simulate rolling dice for board games, RPGs, and decision making. Choose number of dice and faces. Fun, lightweight, and no download required.
Select a month and see the modern and traditional birthstones with images and meaning. Classic reference.
Type a line and see syllable count as you write. Generate nature-themed prompts. Poetry aid.
Enter standard dice notation (e.g., 2d8+3, 4d6k3) and see the roll result and individual dice. Must for tabletop RPG.
Calculate probability of k successes when sampling without replacement. Useful for quality control and card games.
Track your subscriptions, calculate monthly and yearly totals, and find savings by pausing unused services. Local data.
Compute Poisson probabilities for a given mean rate. Ideal for call centers, traffic analysis. Instant chart.
Design a crystal grid by placing crystals on a sacred geometry template. Add notes. Screenshot your layout. Spiritual/art.
Create and dispatch custom events with detail. Listen on other elements. Understand pub/sub pattern in vanilla JS.
Calculate the output voltage and resistor values for a voltage divider circuit. Includes schematic. Handy for electronics hobbyists and engineers.
Calculate the probability of exactly k successes in n independent Bernoulli trials. Step-by-step result. Local.
Check if a number of the form 2^p‑1 is a Mersenne prime. Quick Lucas‑Lehmer test simulation for small p.
Quick reference for frequently used Git commands with examples. Searchable and categorized. A handy resource for all developers.
Calculate grout needed (lbs or kg) based on tile size, grout joint, and area. Also recommend spacer size. Local estimator.
Calculate how long it will take to pay off credit card debt with fixed monthly payments or a payoff goal. Understand interest costs fully.
Enter a package name and version range to see all satisfying versions from the registry. Understand ^ and ~.
Calculate corrected (adjusted) age for premature infants based on birth date and due date. Important for developmental milestone tracking. Local only.
Find out how large you can print based on image resolution in pixels. Understand DPI and megapixels.
Calculate how much water to change weekly to keep nitrates under control. Based on current nitrate level, desired level, and tank volume.
Enter a CSS value in vw/vh and see the actual pixel size at current viewport. Dynamic resize demo.
Understand how !important behaves inside @layer vs unlayered styles. Interactive example. Avoid common pitfalls.
Calculate resistor values for transistor fixed bias or voltage divider configuration. Quick quiescent point analysis.
Calculate projector throw distance or screen image size based on throw ratio. Visualize setup. Essential for home theater planning. Local.
Calculate how many planks you need to cover an area given plank dimensions and gap. Quick carpentry estimator. Local only.
Enter two hex or decimal numbers and perform bitwise AND, OR, XOR, NOT, left/right shift. See results in binary.
Convert diopter strength to approximate magnification and working distance for macro photography.
Interactive scale showing dB levels of everyday sounds with playable samples. Hearing safety.