
Hi Product Hunt! 👋 I'm Vitaliy, and I built formatmath: a free file converter with no limits.

Here's the idea behind it. Almost every online converter works the same way: you upload your photo or document to their server, they convert it there, and you download the result. That means your private files sit on someone else's computer, and to pay for those servers most sites add file size caps, daily limits, watermarks or a sign-up wall.

formatmath works differently. Every tool on the site runs inside your browser, using code that loads with the page. When you drop a file, it's read and converted on your own device, and the result is saved straight back to it. Nothing is uploaded, so your files never leave your phone or computer, and our server never sees them. Once the page has loaded, it even works offline.

Because there's no server doing the heavy lifting, there's also no reason to limit you:
• Free, no account, no watermarks, no daily quota
• Batch mode: drop a whole folder and download everything as one ZIP
• iPhone HEIC, camera RAW (Canon, Nikon, Sony, Fujifilm and more), WebP, AVIF, PSD, TIFF and 50+ formats
• PDF tools: merge, split, rotate, compress, PDF ↔ images
• Photo privacy: view or remove EXIF and GPS, and check whether an image says it was AI-generated
• Dev tools: JSON ↔ YAML/CSV, Base64, UUID generator, regex tester

The only real limit is your device's memory, so very large files work best on a computer.

It's in English and Ukrainian, and works on phones too. I'd love your feedback: which formats or tools should I add next, and did anything fail to convert for you? I read every comment. 🙏


Hi Product Hunt! 👋 I'm Vitaliy, and I built formatmath: a free file converter with no limits.

Here's the idea behind it. Almost every online converter works the same way: you upload your photo or document to their server, they convert it there, and you download the result. That means your private files sit on someone else's computer, and to pay for those servers most sites add file size caps, daily limits, watermarks or a sign-up wall.

formatmath works differently. Every tool on the site runs inside your browser, using code that loads with the page. When you drop a file, it's read and converted on your own device, and the result is saved straight back to it. Nothing is uploaded, so your files never leave your phone or computer, and our server never sees them. Once the page has loaded, it even works offline.

Because there's no server doing the heavy lifting, there's also no reason to limit you:
• Free, no account, no watermarks, no daily quota
• Batch mode: drop a whole folder and download everything as one ZIP
• iPhone HEIC, camera RAW (Canon, Nikon, Sony, Fujifilm and more), WebP, AVIF, PSD, TIFF and 50+ formats
• PDF tools: merge, split, rotate, compress, PDF ↔ images
• Photo privacy: view or remove EXIF and GPS, and check whether an image says it was AI-generated
• Dev tools: JSON ↔ YAML/CSV, Base64, UUID generator, regex tester

The only real limit is your device's memory, so very large files work best on a computer.

It's in English and Ukrainian, and works on phones too. I'd love your feedback: which formats or tools should I add next, and did anything fail to convert for you? I read every comment. 🙏

FormatMath

Free file converter that never uploads your files

Free file converter that never uploads your files