Sunasty
Process and convert files locally in your browser
Details
- Target Audience
- Private personsFreelancersWriters
- Pricing
- Free
- Alternative To
ILovePDF
iLoveIMG
TinyPNG
CloudConvert
Convertio
About Sunasty
Sunasty is a suite of 140+ free utilities for everyday file tasks: PDF (merge, split, compress, sign, unlock), images (compress, resize, crop, redact, HEIC to JPG), video and audio (compress, convert, trim, extract audio, screen recording), plus developer, date and calculator tools. The difference is structural: every tool runs entirely in your browser using WebAssembly (FFmpeg, modern image codecs, qpdf). Files are never uploaded to a server, which you can verify in your browser's network tab. Tools keep working offline once loaded. No account, no file size tiers, no daily quotas. Available in 28 languages.
Product Insights
Sunasty provides a comprehensive web-based toolkit for image, video, and PDF processing that operates entirely client-side via WebAssembly. This architecture ensures complete data privacy as files remain local to the user's browser without server uploads or size limits.
- Privacy-first processing ensures files never leave the local browser environment.
- Offline functionality allows tools to continue working without an active internet connection after loading.
- Zero restrictions on file size, daily quotas, or account registration requirements.
- Extensive localized support featuring a multilingual interface available in 28 languages.
Ideal for: Sunasty is ideal for private persons, freelancers, and writers who require secure file conversion and PDF management without compromising data privacy.
Sunasty serves as an offline-capable and privacy-focused alternative to cloud-based services like ILovePDF, iLoveIMG, TinyPNG, CloudConvert, and Convertio.
Product Video
Watch a video demo of Sunasty.
Screenshots
Reviews (1)
Average 5.0 out of 5
Based on 1 review
Comments (1)
Solo dev from France. 130+ free file tools (PDF, image, video) running 100% in your browser via WebAssembly: files never leave your device. No account, no quotas. What's missing from your workflow?