The fixmint blog

Is 1 to 10 March 9 days or 10? Learn how inclusive and exclusive counts differ, how leap years work, and what adding a month to the 31st really means.

Keep the face centred in a circular profile picture, crop a square first, and save a transparent circle PNG when a site needs one.

Convert between L/100 km, km/L and US or UK mpg, work out the fuel for a trip and its return, and split the cost among passengers without arguments.

Why iPhones save HEIC, why Windows and websites reject it, how to switch to JPG on an iPhone, and how to convert existing photos safely.

Zero-width spaces, non-breaking spaces and byte order marks are invisible but still change your text. Learn where they come from and how to strip them.

What an .ics file is under RFC 5545, why Google, Apple and Outlook calendars open it, how time zones and all-day events work, and when a link is better.

Dead, stuck and hot pixels explained, a solid-colour check for monitors, phones and laptops, why it matters for returns, and why we do not offer flashing.

Use page ranges like 1-3, 5 to send only the pages you need, split a PDF into single pages, and keep the original file exactly as it was.

A diff shows what was added and removed between two versions. Learn how line and word comparisons work, when to ignore spaces and case, and how to read it.

The form says max 100 KB and your photo is 4 MB. Learn what controls file size and the quickest way to hit the limit without visible damage.

True and pseudo-random numbers, the browser's cryptographic generator, modulo bias explained with an example, and how to make a draw people can check.

Simple patterns miss some addresses and grab extra punctuation. Learn how to pull emails and links out of pages and exports, safely.

Why blur, pixelation and highlighters fail to hide text, why solid boxes on a flat image work, and what else to check before you share.

Photos can carry GPS coordinates, the time and your camera model. Learn how to strip that metadata yourself before you send a picture anywhere.

The utm_, fbclid and gclid parts of a link record where you clicked. Here is what each does, which ones are safe to remove and which ones a page needs.

A Wi-Fi QR code lets guests join your network with one scan. Here is how the WIFI: text works, how phones read it, hidden and guest networks, and risks.

Splitting a bill fairly means choosing equal or itemised shares, deciding whether tip is on the pre-tax total, and rounding cents so nothing is lost.

Find out why one side plays or sound seems mono: balance, mono settings, jacks and Bluetooth. Then use a sweep to hunt rattles, starting at low volume.

Shoot receipts and documents in even light, crop and order the pages, pick A4 or Letter, and keep the combined PDF a reasonable size.

Use JPG for photos, PNG for screenshots and transparency, and WebP for websites. A plain comparison of lossy, lossless and browser support.

Tell stuck keys from dead ones, understand ghosting and rollover, sort out Fn lock and layout mix-ups, clean safely and check accessibility settings.

Many free PDF sites upload your files. Here is how in-browser merging works, why it matters for contracts and IDs, and how to check it yourself.

Work through the usual causes of a silent or faint microphone: wrong input device, mute switches, permissions, input level, Bluetooth call mode and echo.

Percentages trip people up in predictable ways. Learn why up-then-down is not zero, how percentage points differ, and how to reverse a discount.

Duplicate lines hide in email, keyword and SKU lists. Learn how to catch near-duplicates, why item10 sorts before item2, and how to fix both.

What "600 × 600 px" and "2 inches at 300 DPI" really mean, why DPI does not change pixels, and when to crop instead of stretching a photo.

A signature image, an e-signature service with an audit trail and a digital signature prove different things. Here is how to choose the right one.

Trailing commas, single quotes, comments and smart quotes break JSON. Learn the rules JSON enforces, how to read error positions, and how to fix them.

Title case capitalises most words, sentence case only the first. Learn when each fits, which small words stay lowercase, and how code names differ.

The bigger pack is not always the better buy. Compare price per kilogram, litre or item, convert common units, and spot shrinkflation before you pay.

A checklist for a webcam that fails in a call: test outside the app, then check browser and system permissions, other apps, shutters, drivers and light.

Length and randomness beat clever substitutions. Entropy in bits, explained with worked numbers, plus passphrases, password managers and why reuse fails.

Email attachment limits vary by provider. Split the PDF, rebuild it from smaller images or share a link instead of attaching it.

Rotation settings, scanner auto-rotate and viewer-only rotation explained, plus how to turn a sideways PDF upright in the file itself.

Meeting times move for a few weeks each spring and autumn because countries change clocks on different dates. Learn the dates and how to find the overlap.

Dynamic QR codes send scans through a redirect that can expire. Static codes never expire but cannot be changed. Here is how to choose, test and print one.

Text copied from a PDF comes out with a hard return at the end of every line. Here is why PDFs store text that way, and how to repair the paste.

Two word counters can disagree on the same text. See what hyphens, emoji and hidden characters change, plus the limits for X posts and SMS.