Browser-native conversions • Privacy first
Convert Anything.
For Free.
No uploads, no cloud, no compromises. 124+ conversion tools powered by local WASM engines. Sub-2s conversions that never leave your device.
Why ConvertCraft?
Local WASM Engine
Files never leave your device. All processing happens in your browser using WebAssembly.
Privacy First
Zero-upload architecture means your data stays on your hardware. No cloud processing, no tracking.
Lightning Fast
Sub-2 second conversions powered by the Nuclear Engine. No waiting for uploads or downloads.
The Journey
Built in 45 Days
I built ConvertCraft in a focused 45-day sprint as a solo developer, with AI helping me move faster and stay consistent.
The hardest part was not writing code — it was staying steady through long nights, fixing edge-cases, and rebuilding flows until they felt simple and fast.
At the core is the ConvertCraft WASM Engine: a local-first processing model delivering high performance while keeping file handling entirely inside the user's workflow — no third-party cloud processing.
The vision stayed clear: privacy-first conversion that feels instant, works for creators, and respects people who just want their files done without noise.
ConvertCraft is the result of that pressure, persistence, and support from people who believed before it was easy to believe.
Day 1-15: Core Engine
Built the WASM conversion engine from scratch. Optimized for speed and reliability.
Day 16-30: Tool Library
Developed 124+ conversion tools covering images, videos, audio, PDFs, and archives.
Day 31-45: Polish
Refined UI, added localization, and optimized the entire pipeline for production.
Operational Blueprints
Recommended Workflow
- ✅Validate one sample file first. Confirm output compatibility before batch processing.
- ✅Lock format & quality settings, then process the full batch with consistent naming.
- ✅Review final file size, visual quality, and metadata before distribution.
- ✅For heavy files, split jobs into stages for easier error isolation.
Popular Tools
Support the Mission
Join the Community
Your support keeps ConvertCraft free and privacy-focused for everyone.
Shayn (aka WA7SH)
My first believer. You lit the spark.
Sequenze
Five years of brotherhood. You held me up when I was crumbling.
Nuizo
My gangster, my 2Pac. Keep that fire alive.
My Stick (WeeWee)
My careful brother, always asking 'Did you finish the website?' Your care kept me going.
Mus
Bro, I love your unstoppable energy.
Aneki Anta Masry / Catlover
Your support means the world. This one's for you.
Want your name on the wall? Join the Supporters
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