SKALDA

Privacy-first browser tools for work, dev, and everyday task

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November 26, 2025 Launching SKALDA: privacy-first browser tools (UNITS + FLINT live)

I’ve started building SKALDA, a multi-brand suite of privacy-first browser tools.

You can try it at https://skalda.io

Most online tools for “small” tasks — converting units, files, images, video, audio, working with PDFs, subtitles, data, and more — force you to upload files, create an account, and accept tracking. SKALDA does the opposite: tools run locally in your browser, with no logins, no file uploads to my servers, and no tracking, and the whole project is localized into 62+ languages, including RTL.

So far I’ve shipped two brands in the SKALDA suite:

  • UNITS – https://units.skalda.io
    Scientific unit converter with a highly customizable Smart Tab on the homepage, 500+ units, smart calculators, custom units, a “Units Museum” timeline, a small interactive game, and a bulk converter that can handle millions of values in one input (transpose input/output, export, etc.).

  • FLINT – https://flint.skalda.io
    File tools: a file converter, PDF organizer (merge/split/reorder/rotate/watermark), metadata cleaner, and subtitle tools (timing fixes, SRT/VTT conversion).

Across SKALDA, settings and state are shared and stored locally: theme, language, ads toggle, and other preferences are synced via localStorage across all brands, with everything staying on the user’s device.

Tech stack: React, TypeScript, Vite, Cloudflare Pages, and a mix of open-source WASM/client-side libraries plus my own architecture and glue code.

I launched UNITS about a month ago and FLINT a few days ago. With basically no marketing (just Product Hunt and AlternativeTo), SKALDA has done ~17k unique visitors in the first month across the domain, mostly organic.

Next on the roadmap:

  • PIXEL – image tools

  • SCRIBE – writing/docs tools

  • DEV – developer utilities

  • SOLVEO or CLIP – calculators/solvers vs audio/video tools (still deciding the order)

  • SCOUT – search/analysis helpers

Right now I’m focusing on building out PIXEL as the next major brand in the SKALDA suite and in parallel improving the UX and performance of UNITS and FLINT.

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I’m building SKALDA as an ecosystem of privacy-first browser tools: UNITS, FLINT, and upcoming PIXEL, CLIP, SOLVEO, SCRIBE, DEV and SCOUT. Most tools need uploads; SKALDA runs client-side with no logins