I built a 32-tool PDF/file suite that never uploads your files — here's why, and an honest status update
I'm a non-technical, solo founder, and about a year ago I got annoyed by a simple thing: every "free" PDF tool online works the same way — you upload your file to their server, wait, download the result, and just trust that it gets deleted. For anything remotely sensitive (bank statements, ID documents, legal paperwork), that always bugged me.
So I set out to answer one question: does it actually have to work that way?
Turns out, no. Modern browsers can do real heavy-duty file processing — merging PDFs, running OCR, applying genuine AES-256 encryption — entirely on your own device using WebAssembly and JavaScript. No server round-trip. That became FormatDog's whole architecture: every one of its 32 tools runs 100% client-side. Your file never leaves your browser, which I can actually prove rather than just claim — open dev tools, watch the Network tab, use any tool, and you'll see nothing going out.
**What's actually in it right now**
- The usual PDF suite (merge, split, compress, password protect with real AES-256, watermark, redact — actual content-destroying redaction, not a cosmetic box)
- OCR across 25+ languages, including proper support for mixed-language documents (a lot of Indian government forms mix Hindi/English/regional languages in one doc, which most OCR tools handle badly)
- A document scanner that uses your camera, auto-detects page edges, and auto-captures when it's steady — built this one recently, was a fun rabbit hole into OpenCV.js
- A GPS camera tool for stamping geotagged photos, aimed at field-verification use cases
**Honest status** I launched on Product Hunt last week and it was a modest, humbling result — landed outside the top rankings, which taught me the real lesson that PH success is mostly about pre-launch audience building, not the product itself. Still pre-revenue (AdSense isn't live yet), no marketing budget, just building in public and figuring out distribution as I go.
If you've ever hit a daily-limit wall on Smallpdf or gotten nervous uploading something sensitive to a random converter site, I'd genuinely love your feedback: formatdog.com
What would make this actually useful for you, versus just "another PDF tool"?
I think the interesting part isn't that the tools run in the browser—it's that trust no longer depends on a privacy policy.
When users can verify for themselves that their files never leave the device, privacy shifts from being a promise to being part of the product itself. That's a much stronger foundation than simply offering another PDF toolkit.