Developer Tools — Guides & Articles

• Convert Excel to JSON for Income Tax Returns Locally

  Published 2026-09-03

  Convert Excel to JSON for income tax returns locally in your browser. Tax data stays on your machine and exports as JSON for ITR scripts and APIs.

  

• How to Export One Sheet From Excel to CSV Safely

  Published 2026-09-03

  Export a single sheet from a local .xlsx file as a formula-safe CSV in your browser. Step-by-step workflow, what gets preserved, and what to verify after…

  

• How to Get Excel Link Targets as a Plain-Text List

  Published 2026-09-03

  Extract every http, https, and mailto cell hyperlink from a local .xlsx workbook as plain text without uploading the file or following any URL.

  

• Excel Formulas Cheat Sheet Bulk: Twelve Daily Functions

  Published 2026-09-03

  Search and copy twelve verified Excel formula signatures by name, category, syntax, or purpose. Compact browser reference for daily math and lookup work.

  

• Get an Excel Column Name and Export It as CSV Locally

  Published 2026-09-02

  Get an Excel column name from a local .xlsx without uploading the workbook. Pick the column by letter and first-row label, then export it as a CSV file.

  

• How to Create an Empty File in Linux Step by Step

  Published 2026-09-02

  Create an empty file in Linux using touch, redirection, truncate, fallocate, or dd. Compare methods, edge cases, and a browser tool for exact byte counts.

  

• How to Get a Directory Tree in CMD as Shareable Text

  Published 2026-09-02

  Get a directory tree in CMD as clean, copy-ready text. Paste a path list into the local generator and produce deterministic Unicode or ASCII output.

  

• How to Check Differentiability of a Function in Code

  Published 2026-09-02

  Compare two versions of a function to check its differentiability in code. See added, removed, and unchanged lines with running counts, no upload.

  

• Camel Case to Snake Case Bulk: One Paste, Six Styles

  Published 2026-09-02

  Use a camel case to snake case bulk workflow: paste one identifier or short phrase, review acronym and digit boundaries, and copy six naming styles locally.

  

• CSV to JSON Bulk: Validate One Large Table

  Published 2026-09-02

  Convert a large comma-delimited CSV table to pretty-printed JSON locally, preserving quoted commas, quotes, line endings, and every cell as a string.