Guides
The questions behind the tools. Why a scanned PDF holds no text, why a black box is not a redaction, why converting audio twice sounds worse — written to be useful whether or not you use anything here.
PDF too big to email
The three reasons a PDF is large, and which fix applies to yours.
ReadWhich image format?
One question decides it. JPG, PNG, WebP and AVIF compared honestly.
ReadScanned PDFs and OCR
Why a scan holds no text, what OCR adds, and the setting that decides accuracy.
ReadRedacting a PDF properly
Why a black box hides nothing, and the places a PDF keeps names you forgot.
ReadAudio generation loss
Every lossy conversion costs quality. When it matters, and the rule that avoids it.
ReadContainers vs codecs
Why one video converts in seconds and another takes an hour.
ReadZIP, 7z, tar.gz or RAR
Which archive format to use, and why nothing free can make a RAR.
ReadWhy Excel ruins your CSV
Leading zeros, dates and rounded IDs — why it happens on opening, not saving.
ReadWhat counts as a character?
Why one emoji can count as 1, 7, 11 or 25 — and which number your limit means.
ReadPDFs for a print shop
Bleed, trim, CMYK and fonts — what printers reject, and what cannot be fixed later.
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