Unit Conversion Chart
A unit conversion chart for length, weight, volume and temperature between metric and imperial, plus fractional inches to millimeters. Free printable PDF.
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Cleanup Guides
Find the right guide by device, app, or clutter type, then go straight to the fix.
Social Media Image Sizes
Current recommended image sizes for Instagram, Facebook, X, LinkedIn, YouTube, TikTok and Pinterest, with aspect ratios. Free printable cheat sheet.
Alt Codes List
The full alt codes list: hold Alt and type the number to insert symbols like ©, °, é and ™. Free printable PDF.
Keyboard Symbols
What every symbol on your keyboard is called, from the tilde (~) to the pipe (|), and what each is used for. Free printable reference.
Markdown Cheat Sheet
The complete Markdown syntax in one page: headings, bold, links, lists, tables and code. Free printable cheat sheet PDF.
Regex Cheat Sheet
A complete regex cheat sheet: character classes, quantifiers, anchors, groups and flags, with example patterns. Free printable PDF.
Paper Size Chart
Every standard paper size, A-series and US, in millimetres, inches and pixels at 300 DPI. Free printable chart.
ASCII Table
The full ASCII table: all 128 characters with decimal, hex, octal and binary values, plus control characters explained. Free printable PDF.
HTTP Status Codes
The complete list of HTTP status codes (200, 301, 404, 500 and more), grouped by class, with what each one means. Free printable PDF.
HTML Color Codes
All 140 CSS/HTML named colors with their HEX and RGB values, in one chart. Free printable PDF.
The Cloud Storage Price Index 2026
At 2 TB, cloud storage costs about $0.005 per GB per month, but you rent it forever: roughly $1,200 over a decade. We indexed every major provider to find what a gigabyte really costs.
Much Data Streaming Use
A 2-hour 4K movie uses about 14 GB; an hour of music about 0.14 GB. Data used per hour for Netflix, YouTube, Spotify and more, by quality, with the exact numbers.
Many Photos Fit 64
A 128 GB iPhone holds about 37,000 HEIC photos but only 1,500 in 48 MP ProRAW. How many photos and how much video actually fit in every storage tier, after usable-space losses.
We Rank Page 1
Our informational articles rank on Google's page 1 but earn 0.27% CTR, about 10x below normal. A first-party Search Console study of what AI Overviews did to click-through.
State of Next-Gen Image Formats 2026
We benchmarked AVIF, WebP and JPEG XL at matched quality and checked browser support. AVIF makes the smallest files and works in 93% of browsers; JPEG XL reaches only 14%.
Passport Photo Requirements by Country
We compiled the official passport and visa photo rules for 11 countries. Sizes, backgrounds and glasses rules all differ, so a photo that passes in one country is rejected in the next.
The HEIC Tax
We benchmarked 96 encodes: converting an iPhone HEIC to a quality-matched JPG roughly doubles its size, and to PNG makes it about 4.7x bigger, for no visible quality gain.
Storage Full After Update
You updated your phone and suddenly it is out of space — or the update itself won't install because storage is full. It feels like the update *ate* your…
'System Data' Grew After
System Data often balloons after an iOS update from leftover files, caches and new models. Here is why it happens and what is actually safe to reclaim.
AI World Actually Googling
Worldwide Google search data for 13 AI tools (Jun 2025 to May 2026): ChatGPT takes 72% of demand, Gemini up 509%, Claude the fastest riser at 808%.
Storage Full Camera Won't
Camera says "Cannot Take Photo - not enough storage"? Free a few hundred MB on iPhone in under 2 minutes with these ordered quick wins, then the durable fix.
Often You Clean Phone's
Most phones need a 10-minute storage cleanup roughly monthly, plus weekly habits. Here is a simple checklist, a frequency table, and the triggers to watch.
iCloud Shared Albums and Storage
Do iCloud Shared Albums count against your storage? Mostly no — Apple hosts them separately. See what they really use on your iPhone and what actually fills it.
Use 'Review Large Attachments'
Use Review Large Attachments at Settings > General > iPhone Storage to delete big Messages files fast - and learn the four things it quietly misses on iPhone.
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