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2,464 Articles
Blogs
Practical guides for real tasks — written by the people building the tools on this site.
Showing 1,555–1,575 of 2,464 articles
🔥 Math & Science
How to Size a Heat Sink for a Component
Work out the heat sink thermal resistance a part needs, including the junction-to-case and interface terms that get left out of the budget.
🌬️ Unit Converters
How to Size Ventilation Duct for an Airflow
Size round or rectangular duct from airflow and a target velocity, and understand why velocity sets the noise level in a residential system.
🎞️ Image Tools
How to Slice a Sprite Sheet Into Frames
Cut a sprite sheet into individual frames without off-by-one alignment errors, accounting for the outer margin and inter-cell padding separately.
📻 Text & Writing
How to Spell Text With the NATO Phonetic Alphabet
Convert any text into the NATO phonetic alphabet (Alpha, Bravo, Charlie...) for clear spelling over radio or phone, before a name gets garbled.
🧾 Productivity
How to Split a Group Bill Without Confusion
Split a group bill online free when people paid different amounts, so you can see who owes what and settle up without a spreadsheet.
🧾 Productivity
How to Split a Group Expense Fairly
Use an expense splitter to compare equal shares with each person’s contribution and produce a private settlement summary showing who owes or receives money.
🖼️ Social Media
How to Split a Long Image Into a Swipeable Carousel
Split a long image into equal slides for a swipeable carousel post, previewed instantly and downloadable as a ZIP, ready to upload.
✂️ Text & Writing
How to Split Text Into a List on Any Separator
Paste any text and split it into a list, one item per line, using any separator you choose, entirely in your browser.
🔐 Security & Privacy
How to Spot Risky Patterns in a Password
Use a password leak pattern checker locally to flag short length, repeated characters, common words, date-like numbers, and predictable construction risks.
⚫ Games & Fun
How to Start Playing Go on a Small Board
Learn Go on a 9x9 board where games take minutes, understand liberties and captures, and know why the two scoring systems disagree by a point.
🐠 Games & Fun
How to Stock an Aquarium Without Overloading It
Choose fish for a tank based on adult size, schooling needs and compatibility rather than the inch-per-gallon rule, and add them slowly enough for the filter.
🎨 Image Tools
How to Swap One Color for Another in a PNG
Upload a PNG, pick a source and target color, and replace every matching pixel while keeping transparency intact, entirely in your browser.
⏰ Education
How to Teach a Child to Read an Analogue Clock
Build analogue clock reading in stages, from o'clock to the minute, focusing on the hour hand's in-between position that makes the skill hard.
💠 Math & Science
How to Tell if a Salt Dissolves in Water
Use the standard solubility rules to predict whether a precipitate forms, with the exceptions that actually determine the answer in most exam questions.
📉 Finance Calculators
How to Tell if Ad Spend Is On Pace
Compare campaign spend against an even burn, get the daily budget needed to land on target, and avoid the end-of-month rush that buys the worst inventory.
🖥️ Games & Fun
How to Test a Screen for Dead and Stuck Pixels
Check a new monitor, laptop or phone for dead, stuck and dim pixels with full-screen colour tests, while the return window is still open.
🖼️ Social Media
How to Test a Thumbnail at Real Display Sizes
Preview a video thumbnail at feed, sidebar and mobile search sizes to check whether the text survives, before it goes live at a hundred pixels wide.
📧 SEO & Web
How to Test an SMTP Server Connection and Handshake
Run a connection test against an SMTP mail server and review the handshake log - greeting, capabilities, and STARTTLS - in a clean, readable view.
🌲 Developer Tools
How to Test an XPath Expression Against XML
Paste an XML document and an XPath expression to see every matching node or value listed instantly, entirely in your browser.
🖱️ Developer Tools
How to Test Every Mouse Button and Scroll Direction
Click and scroll to test every mouse button and scroll wheel direction, with live counters for each, entirely in your browser.
🤖 SEO & Web
How to Test Robots.txt Rules Before Publishing
Use a robots.txt tester to compare a URL path with Allow and Disallow rules for a chosen crawler, then review the most specific matching directive in advance.