After months of nights and weekends, I launched Filuni - a free online toolkit with 121 tools for PDF, image, video, audio, and document processing. No signup, no upload limits, no watermarks.
Why I built it
Every time I needed to merge a PDF or compress an image, I would land on a tool that either:
- limited me to 2 free uses per day,
- required an account for a 10-second task,
- slapped a watermark on my file, or
- wanted $12/month for basic operations.
So I built my own, and made it free.
What is inside
121 tools across 12 categories:
- PDF: merge, split, compress, convert to Word/Excel/image, watermark, rotate, page numbers
- Office: Word/Excel/PPT/HTML/Markdown/CSV to PDF
- Image: compress, resize, crop, format convert, QR codes, EXIF viewer, watermark, collage
- Video: compress, convert, extract audio, video to GIF
- Audio: convert, compress, trim
- Encryption: AES/RSA, hash generators, Base64, digital signatures
- Developer: JWT decoder, regex tester, cron visualizer, cURL to code, JSON formatter/diff
- Text / Color / Converters / Calculators: word counter, diff, palettes, WCAG contrast, units, timestamps, BMI, loans...
What I learned
- Users hate signup walls for simple tasks. Removing all auth requirements was the single best UX decision.
- Client-side processing wins trust. Most image/text/JSON tools run 100% in the browser (Canvas API, Web Workers) - files never leave your device. People notice and mention it.
- SEO is king for tool sites. Every tool has its own landing page with FAQ and HowTo schema. Organic search is by far the biggest traffic source.
- Multi-language support compounds. Filuni now ships in 11 languages (English, Spanish, Portuguese, German, French, Russian, Vietnamese, Korean, Japanese, Chinese Simplified & Traditional). Each locale opened a new market for the same codebase.
Tech stack
Nuxt 3 + TailwindCSS + PWA. FFmpeg handles video/audio on the server, LibreOffice (via jodconverter) does Office to PDF. Server-processed files are auto-deleted after processing.
Revenue model
Anchor ads only. No paywalls, no popups, no freemium tricks.
Try it: www.filuni.com - I would love feedback on the UX, and suggestions for what tools to add next!
