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Practical guides
Specific notes on choosing formats, checking results, and keeping sensitive work on your own device. Written and reviewed for thisuseful.
Featured Articles
August 14, 2026
Writing meta descriptions people actually click
Three real before/after rewrites, why the 160-character rule is actually a pixel-width rule, and when a description isn't the real problem.
Read the guide → July 2, 2026Password generators are for more than new accounts
Auditing old accounts, handling forms that reject random strings, and why dev tokens shouldn't be typed by hand.
Read the guide → June 5, 2026Getting OCR to actually work on receipts and screenshots
What image quality actually changes accuracy, and the specific failure modes for thermal receipts and mixed-layout screenshots.
Read the guide → May 10, 2026Debugging an API response without uploading it anywhere
The four syntax errors behind most broken JSON, and how to confirm a formatter isn't sending your data anywhere.
Read the guide → April 18, 2026How to actually check if a "private" tool uploads your file
A one-minute check using your browser's network tab — no need to trust a privacy policy's word for it.
Read the guide →