I got tired of uploading my files to random "free" online tools — so I built 129 of them that never leave your browser
🖥️ 100% Browser-Based · 🔒 Zero Uploads · 🚫 No Watermarks, No Signup
The problem
Every time I needed to compress a PDF, convert HEIC photos, or merge a video clip, I ended up on some site that:
- Uploaded my file to their server (bye-bye privacy)
- Slapped a watermark on the free output
- Capped me at 3 files/day unless I "upgraded"
- Was actually 4 different sketchy sites for 4 different tasks
So I built KuberAgent — one dashboard, 129 tools, everything runs locally in your browser using WebAssembly/Canvas/WebCrypto. Your files never touch a server. Ever.
What's inside
📄 PDF & Documents (40+ tools)
Merge, split, compress, watermark, sign, redact, OCR scanned PDFs, convert PDF ⇄ Word/Excel/PPT/PNG/SVG — the full Adobe-replacement toolkit, free.
🖼️ Image Tools
AI background remover & blur, format converter (WebP/PNG/JPG/SVG), compressor, upscaler, OCR, even an AI watermark/object remover — all running local AI models offline.
🎬 Video & Audio
Trim, merge, compress, convert to GIF, generate YouTube Shorts from landscape video, noise removal, text-to-speech, audio-to-text transcription.
💼 Business & Finance (India-focused)
GST calculator with HSN lookup, CTC-to-in-hand salary calculator, EMI/FD/RD calculators, invoice & SOW generators, freelance rate planner.
⚙️ Dev & Design Utilities
Regex tester, JSON/YAML/XML/CSV converter, JWT decoder, cron builder, color palette generator with WCAG contrast checking, CSS glassmorphism designer.
📚 Study, HR, Marketing tools round out the set — flashcards, resume builder, UTM link builder, SEO readability checker, and more.
Why it's different
Most "free" tools online are free-with-an-asterisk: upload limits, watermarks, or your data quietly sitting on someone's S3 bucket. Since everything on KuberAgent runs client-side, there's no server cost scaling with usage — which is why I can keep it genuinely unlimited and free.
I'm actively adding more tools based on what people actually get stuck on day-to-day. If a "convert X to Y" or "compress Z" problem has ever annoyed you, there's a decent chance it's already solved here — or I'll build it.
Would love feedback from this community — especially if you hit a tool that's rough around the edges. I'm shipping fixes fast.
The browser-first architecture is what stood out to me. Letting people verify the privacy claim themselves instead of asking them to trust a policy is a much stronger signal.
One thing I'd keep an eye on is positioning. "129 tools" is impressive, but it can also make the product feel like a toolbox rather than the obvious destination for a specific problem. If privacy is your real differentiator, I'd make that the hero and let the growing tool count reinforce it, not lead it.