The Ultimate Developer Workspace

Fast, free, privacy-first developer utilities. All running securely in your browser.

DevDeskApp is a collection of more than 300 small, focused utilities for the jobs that interrupt real work: reformatting a minified JSON payload, decoding a JWT, generating a hash, converting a timestamp, sizing a concrete pour, or working out a CTC breakdown. Each one opens instantly, does a single thing well, and asks for nothing — no account, no upload, no paywall.

Everything runs in your browser

There is no backend to send your data to. Formatting, hashing, encoding, parsing and calculating all happen locally in JavaScript, which means the text you paste and the files you drop never leave your device. That is what makes it safe to use these tools on a production config file, an API token or a signed contract — the things you would never paste into an unknown web form.

What you will find here

  • Converters — Base64, JSON, YAML, TOML, XML, CSV, colour spaces, units, dates and number bases.
  • Text & strings — diffing, case conversion, slugify, statistics, obfuscation and Lorem Ipsum.
  • Security & crypto — hashing, HMAC, bcrypt, JWT, PGP, RSA key pairs and password strength.
  • Web & SEO — meta tags, URL parsing, HTTP status codes, MIME types and OTP validation.
  • Networking — IPv4 and IPv6 subnetting, VLSM, MAC lookup and range expansion.
  • Editors, design & media — image compression, QR codes, OCR, PDF extraction and diagram editing.
  • Engineering & project controls — earned value, critical path, concrete and rebar quantities.
  • HR & recruitment — salary and CTC breakdowns, onboarding checklists and offer documents.

Built to get out of your way

Tools load as separate bundles, so opening one does not pay for the other 300. Your recently used and favourite tools are remembered locally, the whole site works offline as a PWA, and every page is reachable in two keystrokes from the search box. Read more about the project on the about page, or tell us what is missing via feedback.