This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
Hey Product Hunt 👋
I built Sinsubir because I was tired of uploading my personal files — photos, contracts, IDs — to random websites just to convert or compress them. You never really know where those files end up.
So Sinsubir runs 100% in your browser. Your files never touch a server: no uploads, no accounts, no watermarks, no limits. Convert HEIC to JPG, compress images, merge/split/sign/watermark PDFs and more — all processed on your own device, and gone the moment you close the tab.
It's free and there's nothing to install. I'd love your feedback on which tool to add next!
honestly the privacy angle is great but a batch processing option would be huge, like being able to convert or compress a whole folder of files at once instead of doing them one by one
Ran it on a sensitive PDF to test the privacy angle and was pleasantly surprised everything happened locally. Compression was quick and the merged file came out clean with no quality loss.
Files never leave your device, that part actually works without me tinkering with anything. Resized a few images and merged a couple of PDFs, it handled bigger files than I expected.
Finally a file converter that doesn't try to email me or shove me into a paywall after one use. Merge PDF worked instantly on a 50-page doc and nothing left my laptop, which is honestly the dream.
Pretty slick that everything stays local, no waiting on uploads. Merged a few PDFs and it handled them instantly, no sketchy data stuff going on.
honestly this looks great for people worried about privacy. one thing that would be awesome is batch processing for PDFs, like merging or compressing like 20 files at once instead of doing them one by one. would save a ton of time
tried the pdf merge and it actually finished way faster than i expected, all without anything uploading. honestly the whole no-server thing is the main reason i'd come back to it.
About Sinsubir on Product Hunt
“Convert & edit files 100% in your browser”
Sinsubir was submitted on Product Hunt and earned 10 upvotes and 11 comments, placing #143 on the daily leaderboard. Convert & edit files 100% in your browser File tools that never upload your files Private PDF & image tools — nothing leaves your device API
Sinsubir was featured in Design Tools (261.3k followers), Productivity (656.3k followers) and Developer Tools (515.9k followers) on Product Hunt. Together, these topics include over 262.9k products, making this a competitive space to launch in.
Who hunted Sinsubir?
Sinsubir was hunted by David Avalos. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Sinsubir stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
David Avalos