Developer Tools— Guides & Articles

• How to Convert an Excel Table to HTML Code

  Published 2026-08-04

  Convert a local .xlsx worksheet into an escaped HTML table snippet in your browser. No upload, no formula execution, no scripts injected.

  

• How to Convert an Excel File to a CSV Locally

  Published 2026-08-04

  Convert an Excel file to a CSV in your browser without uploading it. Read stored values, export one worksheet, and verify the CSV before sharing.

  

• Extract URL From Excel Hyperlinks Without Uploading

  Published 2026-08-04

  Extract URLs from Excel hyperlinks with a local browser tool that lists http, https, and mailto targets per cell address and never uploads the file.

  

• Excel Formulas Cheat Sheet Alternative for Common Formulas

  Published 2026-08-04

  Excel formulas cheat sheet alternative: search twelve verified functions and copy vendor-style signatures for SUM, IF, XLOOKUP, and more.

  

• How to Create a Dummy File in Unix: Exact Bytes

  Published 2026-08-03

  Create an exact-byte dummy file for Unix testing in your browser. Pick zero, random, or repeated-text content up to 50 MiB without touching the shell.

  

• How to Generate a Linux Directory Tree From Path Lists

  Published 2026-08-03

  Generate a Linux directory tree from a list of pasted file paths without touching the filesystem. Forward-slash rules, ASCII vs Unicode connectors, and…

  

• How to Check the Difference Between Two Files in Linux

  Published 2026-08-03

  A browser-based diff checker compares two Linux files line by line. Paste original and changed text, see added/removed markers, keep data in your browser.

  

• How to Convert Snake Case to Camel Case in JavaScript

  Published 2026-08-03

  Convert snake_case identifiers into camelCase for JavaScript projects with a deterministic browser tool that preserves acronyms, digits, and Unicode letters.

  

• How to Make a CSS Grid Wrap Items to New Rows

  Published 2026-08-03

  Make a CSS Grid wrap items cleanly across rows with explicit tracks, a 0–100px gap, and minmax(0, 1fr) sizing. Step-by-step instructions and a live preview.

  

• A Local CSV to JSON Alternative That Preserves Strings

  Published 2026-08-03

  A local CSV to JSON alternative that runs in your browser, keeps every cell as a string, and preserves quoted commas, line breaks, and the UTF-8 BOM.