Practical, tested how-tos for the jobs our tools do: protecting your privacy in photos and documents, working with PDFs, and understanding the numbers behind the calculators.
💰 Finance
Debt Snowball vs Avalanche, with a Worked ExampleBoth methods pay every minimum and put all your spare money on one debt at a time. The difference is which debt goes first. Here are four debts paid off both ways, with the exact payoff months and interest, so you can see what the choice really costs.How to Compare an Hourly and a Salaried Job OfferDoubling the hourly rate gives a rough annual salary, but it can mislead you when you are choosing between two offers. Here is a step-by-step method, with a worked example of $30 an hour against $62,000 a year, that counts paid time off, overtime, real hours and benefits.
👨💻 Developer Tools
Cron Syntax Explained, with Practical ExamplesCron’s five fields are easy to read and easy to get wrong. Here is how each field works, a table of schedules you can copy, the traps that make jobs run far too often or never, and what changes on GitHub Actions, Kubernetes and AWS.JSON vs CSV: When to Use Each, and When Each BreaksCSV is compact and opens in any spreadsheet. JSON keeps types and nested structure. Each one fails in its own predictable ways, from lost leading zeros to rounded IDs. Here is how to choose, what goes wrong, and how to convert without losing data.JWT Structure and Expiry, ExplainedA JSON Web Token looks like random text, but two of its three parts are readable by anyone. Here is what each part holds, how expiry works, why tokens expire too early or never, and the mistakes that turn a JWT into a security hole.
🖼️ Image Tools
How to Remove the GPS Location from a PhotoMost phone photos record exactly where they were taken. Here is how to strip that location on iPhone, Android, Windows and Mac, stop your camera adding it, and check that it is really gone.What Information Is Hidden in a JPEG Photo?A JPEG photo is more than the picture. It can carry where and when it was taken, the exact device, its editing history, a thumbnail of the uncropped original, and sometimes a whole video clip. Here is what is in there and how to see it.
📄 PDF Tools
How to Compress a PDF Without Losing Searchable TextMany PDF compressors get their big savings by turning every page into a picture, so the text can no longer be searched, copied or read by software. Here is how to make a PDF smaller and keep its text, and how to check that you did.How to Remove Your Name from a PDF’s MetadataA PDF often carries your name in its hidden Author field, even when it appears nowhere on the page. Here is where it comes from, how to remove it in Word, LibreOffice, Acrobat, on a Mac or in your browser, and the places it hides that most tools miss.How to Safely Share a Confidential PDF: A ChecklistBefore a sensitive PDF leaves your hands, work through this list: cut it to the pages that are needed, redact properly, remove hidden data, mark it for the recipient, encrypt it, and choose how it travels. Most steps take a minute.