PNG vs WebP vs AVIF: Which Format When
Three formats, one decision framework: where each wins, the honest fine print, and the conversions that capture the size savings in seconds.
Nick (ATV Team)
HEIC to JPG: Open iPhone Photos Anywhere
Apple’s camera format is technically excellent and socially awkward: what HEIC is, why files refuse to open, and the clean thirty-second fix.
Crop Images for Instagram, YouTube and X (Exact Sizes)
Crop to the ratio or an algorithm crops for you: the sizes table, the YouTube safe-area trap, and the order of operations that keeps photos sharp.
Compress Images Without Visible Quality Loss
The quality slider has a sweet spot and resizing beats it anyway: how to shrink photos hard while keeping them indistinguishable on screen.
Edit PDFs Free in Your Browser: No Upload Needed
Merging, splitting, rotating, compressing and reading PDFs can run entirely on your machine; here is how that works and where the honest limits are.
Turn Images, Text or Markdown into a PDF
Photos into a tidy document, text that opens everywhere, Markdown with formatting for free: the creation tools and the layout decisions behind them.
PDF Metadata: What Your Files Reveal About You
Every PDF ships a second document: author names, real timestamps, software versions. What it reveals, when it helps, and how to clean it.
Extract Text from a PDF (and Why Scans Fail)
The text layer is drawing instructions plus a glyph map: what extraction can honestly pull out, the five-second test, and the scan caveat.
Compress a PDF: What Actually Shrinks the File
The honest compression guide: a 300 dpi scan page is 26 MB raw, lossless reclaims structure, lossy trades quality, and scans barely budge.
Merge and Split PDFs Without Uploading Them
Merging and splitting are page bookkeeping, not editing: what carries over, the range tricks, the rotation flag, and the form-fields caveat.
Angles: Degrees, Radians and Gradians Converted
Why three angle units survive, the conversion bridge, and the five-second sin(30) test that diagnoses the most expensive calculator mistake.
PSI, Bar, Pascal: Pressure Units Made Simple
Tires, weather maps, blood pressure and scuba all measure the same thing in different units; two memorized factors connect the whole family.