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Practical guides for real tasks — written by the people building the tools on this site.
Showing 1,996–2,016 of 2,462 articles
🗂️ Productivity
How to Draft OKRs That Actually Track Progress
Draft an objective with multiple key results, track progress with sliders, and export the whole plan as text, without a heavyweight OKR platform.
✨ Games & Fun
How to Draw Symmetric Kaleidoscope Art in Your Browser
Draw with your mouse or finger and watch each stroke mirror into a full symmetric kaleidoscope pattern, downloadable as a PNG, no drawing skill required.
🎓 Education
How to Drill Times Tables With a Timed Round
Practice multiplication tables with a 60-second timed round, instant scoring, and adjustable difficulty, for kids building real recall speed, not just accuracy.
🧩 Developer
How to Encode and Decode Base64 Text
Encode text to Base64 or decode Base64 back to text, with an optional URL-safe variant, without spinning up a script for a quick one-off conversion.
✉️ Developer
How to Encode and Decode Quoted-Printable Text
Encode text to Quoted-Printable (RFC 2045) or decode it back, with proper line wrapping and UTF-8 support, for debugging raw email or MIME content.
🔐 Security & Privacy
How to Encode and Decode Text With ROT13
Encode or decode text with the classic ROT13 letter-shift cipher, updated live as you type, for spoiler-hiding and lightweight text obfuscation.
🔏 Developer
How to Encode and Sign a JWT in Your Browser
Decode a JWT's header and payload, or encode and sign a new HS256 token from JSON and a secret, using the Web Crypto API, without setting up a backend.
🔒 Security & Privacy
How to Encrypt Text With AES-256 in Your Browser
Encrypt or decrypt sensitive text with AES-256-GCM and a passphrase, using your browser's native Web Crypto API so nothing is ever sent to a server.
🏃 Health & Fitness
How to Estimate Calories Burned on a Run
Estimate calories burned from a run based on distance and body weight, using a widely cited running rule of thumb, without a heart rate monitor.
🍲 Health & Fitness
How to Estimate Calories in a Homemade Recipe
Add recipe ingredients with quantities to estimate total calories and calories per serving, without a nutrition label or a food-tracking app subscription.
🚗 Finance Calculators
How to Estimate Car Loan Payments With Trade-In
Calculate monthly car payments including trade-in value, down payment, and sales tax, plus the full amortization schedule, before you sit down at the dealership.
🏡 Finance Calculators
How to Estimate Closing Costs on a Home Purchase
Get an itemized estimate of typical home-purchase closing costs, from origination and title insurance to appraisal fees, based on your purchase price.
💡 Finance Calculators
How to Estimate What a Device Costs to Run
Enter a device's wattage, your electricity rate, and how often you use it to estimate daily, monthly, and yearly running costs before you leave it plugged in.
💰 Social Media
How to Estimate What an Influencer Should Charge
Get a ballpark sponsorship rate from follower count, engagement rate, and platform, using commonly cited industry rate ranges, before a brand negotiation.
📏 Health & Fitness
How to Estimate Your Child's Adult Height
Estimate a child's likely adult height from both parents' heights using the mid-parental height method, with a likely range shown alongside the estimate.
🖼️ PDF Tools
How to Export PDF Pages as PNG Images
Turn every page of a PDF into a PNG image, with an option to keep transparent regions instead of a solid white background, right in your browser.
🎞️ Image
How to Extract Every Frame From an Animated GIF
Extract every individual frame from an animated GIF and download each one as a PNG, with a built-in GIF decoder, no desktop software required.
🔤 Text & Writing
How to Extract Initials From a Bulk List of Names
Extract initials from a bulk list of full names, with uppercase/lowercase and period-formatting options, and one-click copy, for reports, tags, or exports.
🏠 Finance Calculators
How to Figure Out How Much House You Can Afford
Estimate the maximum home price and monthly mortgage payment you can afford based on your income, debts, down payment, and target debt-to-income ratio.
📝 PDF Tools
How to Fill an Interactive PDF Form in Your Browser
Open a PDF with fillable form fields, fill in text fields, checkboxes, dropdowns, and radio buttons, and download the completed PDF, no software install needed.
🥁 Audio
How to Find a Song's Tempo by Tapping Along
Tap a button in time with a beat to instantly calculate its tempo in beats per minute, for DJs, producers, and anyone syncing music to a project.