Developer Tools — Guides & Articles

• Convert Decimal to IEEE 754: Inspect Stored Bits in Browser

  Published 2026-09-05

  Convert decimal to IEEE 754 binary32 or binary64 in your browser. Inspect sign, exponent, fraction, hex, and classification, then verify byte order before…

  

• HTTP Status Codes API Alternative: A Private Browser Tool

  Published 2026-09-05

  A self-contained HTTP status codes API alternative built on the IANA registry. Search 64 entries by code, phrase, or class without uploading data.

  

• Convert HTML to a JavaScript String Safely

  Published 2026-09-05

  Paste raw HTML, get an escaped JavaScript const string with double, single, or template-literal output. No parsing, no upload, no markup changes.

  

• How to Edit HTML with a Side-by-Side Editor

  Published 2026-09-04

  Edit HTML using a side-by-side HTML and CSS editor with a restricted local preview. No scripts, no uploads, and no external resources.

  

• Format HTML in Notepad++ Through Your Browser

  Published 2026-09-04

  Format HTML in Notepad++ by routing markup through a browser parser that quotes attributes, repairs missing tags, and optionally removes comments without…

  

• How to Find Hello World Examples in Any Language

  Published 2026-09-04

  Find Hello World examples in 12 languages. Search by language, runtime, filename, or code, then copy the snippet and run it with the official toolchain.

  

• Common Git Commands: 12 Templates to Search and Copy

  Published 2026-09-04

  Search twelve source-checked common Git commands by workflow or task. Copy a safe template, replace every placeholder, and inspect state before mutating.

  

• How to Make Flexbox Items Fill the Full Width

  Published 2026-09-03

  Make a flex container distribute its items across the full width. Configure direction, wrapping, distribution, alignment, and gap, then copy safe CSS.

  

• File Signatures List API Alternative in Your Browser

  Published 2026-09-03

  Skip libmagic or signature APIs with a local twelve-prefix reference. Search format, extension, or hex; copy offset-zero bytes for detection rules.

  

• Open Excel Online on Desktop Without Installing It

  Published 2026-09-03

  Open a local .xlsx workbook online on your desktop using a browser-based Excel Viewer that never uploads the file or runs spreadsheet formulas.