
HandBrake
Shutter Encoder
Format Factory
Freemake Video Converter
File Converter
Avidemux
VidCoder
Open source multimedia suite for conversion, playback, profiling, and streaming.

File Converter
CloudConvert
ConvertifyApp.net
FileConvertLab
Format Factory
My File Tool
Convert HEIC, WebP, PNG, JPG, RAW, PSD, TIFF and PDF files right in your browser. Merge, split and compress PDFs. Free, no upload, no sign-up.
Which is more popular?
Based on our record, FFmpeg seems to be more popular. It has been mentioned 6 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | ffmpeg.org | formatmath.com |
| Company | — | Startup from Ukraine · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of FFmpeg yet.
👋 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...
What each product offers, as listed by its team.


Possible disadvantages
No features have been listed yet.
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of FormatMath yet.
Walkthroughs and reviews on video.
How to use FFMPEG
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing FFmpeg and FormatMath.
FormatMath's answer:
Privacy and no limits. Popular converters like CloudConvert, Convertio, FreeConvert or Zamzar upload your files to their servers and limit free use by file size, number of conversions or waiting time. FormatMath converts locally, so private photos, scans and documents stay on your device, and you can batch-convert hundreds of files and download them as one ZIP for free. It also covers formats many converters skip, such as camera RAW (CR2, CR3, NEF, ARW, DNG and more), PSD, JPEG XL and CBZ.
FormatMath's answer:
Individual users (no accounts required, so we don’t track customers)
FormatMath's answer:
Every tool runs entirely in your browser. When you convert a file, it’s read and processed on your own device and saved straight back to it, so it’s never uploaded and our server never sees it. Because there’s no server-side processing to pay for, there are also no file size caps, no daily limits, no watermarks and no sign-up. It works offline once a page has loaded.
FormatMath's answer:
iPhone users who need HEIC photos as JPG for websites, forms and Windows PCs Photographers who need quick JPG previews from camera RAW files Office workers and students who merge, split, rotate or compress PDFs Privacy-conscious people who don’t want to upload personal files to a server Developers who need quick JSON, YAML, CSV, Base64, UUID or regex tools
FormatMath's answer:
I kept needing to convert iPhone photos and PDFs, and every online converter wanted me to upload private files to an unknown server, then limited me by file size or number of conversions. Modern browsers can decode and encode most formats themselves, so I built FormatMath to do all the work on the user’s device instead. It started with HEIC to JPG and grew into image, RAW, PDF, compression, photo-privacy and developer tools, in English and Ukrainian. I also run fee-math.com, a set of free fee calculators for online sellers built on the same no-upload principle.
FormatMath's answer:
TypeScript and Astro (static site) Cloudflare Workers and D1 (hosting, blog and anonymous usage stats) WebAssembly codecs (libheif for HEIC, jSquash for JPEG XL and WebP) pdf.js and pdf-lib for PDF rendering and editing Canvas and Web Workers for in-browser image processing fflate (ZIP), UTIF (TIFF), ag-psd (Photoshop files), exifr (metadata), yaml
Share your experience with using FFmpeg and FormatMath. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


FFmpeg is the best free video converter software for advanced users or engineers who know a command-line environment. It doesn't come with the GUI. So you can't convert videos by simple clicks as what you're doing...
If you’re not comfortable with using a command line to operate your software, then you may want to stop reading right now. FFmpeg is incredibly powerful, available for all major platforms, and best of all, it’s free –...
FFmpeg is an open source project that develops libraries and programs for handling multimedia data. FFmpeg is the home to libavcodec, a codec library used by a large spectrum of programs, and libavformat, a mux and...
We have no reviews of FormatMath yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


With over 100 codecs supported, that same seven-stop pipeline is how ffmpeg decodes, encodes, transcodes, filters, and plays basically any multimedia file that exists. Source: ffmpeg.org/about.html. - Source: dev.to / about 2 months ago
The combination of Node.js and FFmpeg represents the most flexible and customizable approach to video streaming. This setup gives you complete control over the video streaming process. - Source: dev.to / over 1 year ago
The fact that Handbrake doesn't expose the same features as the ffmpeg CLI tool is frankly irrelevant. It's not just relevant, it's the whole thing. They asked for an ffmpeg GUI and someone recommended a GUI that doesn't use... - Source: Hacker News / over 2 years ago
Tracking FormatMath since Nov 2026.
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Format Factory is software that allows the user to convert media into various file formats. The software is a product of PC Free Time, a Chinese software development company. Read more about Format Factory.
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