Blog

SEO-friendly guides with FAQs, comparison tables, and links into ZeroKit tools. No paywall — open the post and jump to the relevant formatter, encoder, or AI flow.

• 2026-03-01·3 min read

  How to Format JSON Online for Free (2026 Guide)

  Format JSON in the browser without uploading your data — complete guide with tables and FAQ.

• 2026-03-02·2 min read

  Why Privacy-First Developer Tools Win in 2026

  Client-side tools, verification steps, and when server calls are unavoidable.

• 2026-03-03·2 min read

  Base64 Encoding Explained — What It Is and When to Use It

  Binary-to-text encoding, JWTs, data URLs, and Base64 vs encryption.

• 2026-03-04·2 min read

  How to Compress Images for the Web Without Uploading Them

  Core Web Vitals, WASM compression, formats, and batch workflow.

• 2026-03-05·2 min read

  JWT Tokens Explained — Header, Payload, Signature

  Claims, expiry, HS256 vs RS256, and why JWTs are not encryption.

• 2026-03-06·2 min read

  Test Regex Without Sending Your Data to a Server

  JavaScript RegExp in the browser, cheat sheet, and safe workflows.

• 2026-03-07·1 min read

  Merge PDFs Without Uploading Them — Here's How

  pdf-lib in the browser, reorder, download — compared to upload-based tools.

• 2026-03-08·1 min read

  Cron Expressions — The Complete Guide with Visual Builder

  Five fields, special characters, platform differences, and examples.

• 2026-03-09·1 min read

  From Markdown to PDF — Export Notes and Docs Instantly

  GFM features, export workflow, and when PDF beats Markdown.

• 2026-03-10·2 min read

  5 AI Tools for Developers — Without Training on Your Code

  Claude-powered tools, limits, and how they differ from general chat UIs.