I built ConvertFast, a desktop tool for file conversion and utilities that works entirely offline.
The motivation came from being frustrated with online converters — they upload files to unknown servers, have unclear privacy policies, impose file size limits, and are slow when handling multiple files. I wanted something private, fast, and unlimited.
What it does:
Converts files locally, no uploads or internet required
Supports 2,500+ formats (PDFs, images, audio, video, etc.)
Batch processing: convert dozens or hundreds of files at once
PDF toolkit: merge, split, compress, extract pages
Image tools: batch editing, watermarks, EXIF management
Audio/video utilities: trimming, speed control, audio extraction
It’s cross-platform and works on Windows, macOS, and Linux.
I’d love feedback on the idea, the implementation, and features that might be missing. Thanks for taking a look!
amsaleque•4mo ago
My name is Ahmed. The idea for ConvertFast came from being frustrated with online converters. Uploading sensitive files like bank statements or personal photos to random servers always felt risky, and many services are slow, limited in size, or unclear about privacy.
On top of that, how many times have you searched for “how to convert PDF,” “how to merge PDF,” or “how to extract audio from video”? That constant hopping between websites inspired building a single, local solution.
ConvertFast is a desktop app that handles all conversions locally and fully offline — no uploads, no cloud, no limits. It supports almost every format you might need in daily or professional life, and there are no file size restrictions.
It’s not just a file converter:
PDF toolkit: merge, split, compress, extract pages
Image tools: batch edits, watermarks, EXIF management
Audio & video utilities: trimming, speed control, audio extraction
The goal was to put all these tools in one place so you don’t have to waste time online or worry about privacy. Everything happens on your computer, fast, secure, and unlimited.
Happy to answer questions about formats, features, or why certain workflows were included!