After uploading what felt like the 100th sensitive contract to a "free" PDF site, I realized I had no idea where those files were going. So I built BunnyConvert — 24 PDF tools that run entirely in your browser using JavaScript.
What It Does
24 tools so far:
- Sign PDF (with cursive fonts, drag-to-position)
- Merge / Split / Compress / Rotate
- JPG/PNG/HEIC → PDF
- PDF → Word/Excel/PowerPoint/Image
- Watermark, Protect, Unlock
- Image Resize, CSV ↔ JSON
The Stack
- Vanilla JS frontend (no React/Vue)
- pdf-lib for PDF manipulation
- pdf.js for rendering
- heic2any for HEIC decoding
- Capacitor for Android wrapper
- Supabase for opt-out analytics
Privacy First
Everything runs client-side. Files never touch a server. You can verify in DevTools Network tab — zero outbound file requests.
Tricky Parts
- pdf-lib's StandardFonts don't support Turkish characters → had to embed custom TTF
- DocuSign-like signature placement in vanilla JS with both touch + mouse drag
- AdMob production approval is brutal for new publishers (~2-4 weeks of "limited ad serving")
Try It
Web: https://bunnyconvert.com
Android: Google Play (search BunnyConvert)
iOS: in submission
Free with daily credits. Pro is $4.99/mo for unlimited + ad-free in mobile.
Open to feedback or questions.
Top comments (2)
stop uploading to random sites should be the default mindset, not the exception. we built swapfile.live for the same reason - pdf, office, images and video all convert in the tab. did you benchmark against the incumbents or is the privacy argument enough on its own?
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