// notes/
Coding tips and build notes by Mahir Faysal, a student web developer in Bangladesh: tested Python, HTML, CSS, JavaScript and PHP tutorials, plus notes from my Next.js and Gemini projects. Sample posts are marked and drafts stay in the admin area.
%20 in a URL means a space. URLs can't contain raw spaces, so browsers and servers replace each space with a percent sign followed by 20, the hexadecimal code for the space character.
A UUID (Universally Unique Identifier) is a 128-bit value used to label records, files, sessions and API objects so they stay distinct across machines without a central ID server.
To resize an image for the web, set the display dimensions you need (for example 1200×630 for Open Graph social cards), export at 1× or 2× that size, compress with a modern format such as WebP, and never upscale a small photo to invent detail.
Base64 encoding turns any sequence of bytes into a safe string of ASCII characters using a 64-symbol alphabet, with = used as padding when the input length is not a multiple of three.
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This view is only the category, tag, or search you asked for. Sample warnings still apply on any article that carries them. Drafts are still hidden. The full list is the learning notes page, which also explains how a note is written and why some posts are marked Sample.