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.
This is exactly the kind of feedback I was hoping for. Thank you 🙏
I built KuberAgent because I wanted tools that never upload files or collect user data. The 129+ tools are a result of that mission, not the mission itself. Your point about leading with privacy instead of the number of tools makes a lot of sense, and I'll be testing that in the next iteration. Thanks again for taking the time to share this.
I'm glad it resonated.
Reading your reply gave me one thought about what changes once privacy becomes the promise and the tools become proof of it. I'd rather explain it in the context of what you're building than try to compress it into a few comments.
If you're interested, what's the best email to reach you on?