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Developer & Text Tools

11 free developer and text utilities in one page: JSON formatter/validator, Base64 and URL encode/decode, JWT decoder, SHA hash generator, UUID, timestamp converter, word counter, case converter, line tools, text compare.

No loginNo file storageInstant & free

Eleven utilities, zero uploads: JSON beautify/minify/validate with clear error messages, Base64 and URL encoding both directions, a JWT decoder that shows header, payload and expiry status, SHA-1/256/384/512 hashes via Web Crypto, UUID v4 generation, a timestamp converter handling Unix seconds/milliseconds and ISO dates, a word/character/reading-time counter, seven case conversions including camelCase and snake_case, line tools (dedupe, sort, trim, shuffle), and a line-level text compare with added/removed highlighting.

How it works

  1. Pick a tool from the tab row.
  2. Paste your input — most tools convert instantly or with one click.
  3. Copy or read the result. Everything stays in your browser.

Frequently asked questions

Is the JWT decoder safe for real tokens?

Decoding happens locally and nothing is transmitted — but as standard practice, avoid pasting live production credentials into any tool, and note that signatures are not verified here.

Which hash algorithms are supported?

SHA-1, SHA-256, SHA-384 and SHA-512 via your browser's native Web Crypto. (MD5 is obsolete and intentionally not included.)

Does the word counter give reading time?

Yes — words, characters with and without spaces, sentences, paragraphs, and an estimated reading time at 200 wpm.

Are my files uploaded to a server?

No. Every iConvertDoc tool runs entirely in your browser using JavaScript. Files are opened on your own device, processed locally, and never transmitted anywhere — you can even go offline after the page loads.

Is this really free? Any limits or watermarks?

Completely free — no sign-up, no daily limits, no watermarks, no premium tier hiding features.

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