EasyConvert

A native macOS file conversion utility. Drag files in, pick a format, convert. Images, video, and audio, with GPU-accelerated image processing (Metal via Core Image) and hardware video encoding (VideoToolbox via AVFoundation) where the platform supports it, falling back to a bundled ffmpeg for everything else.

Screenshots

Images: drag and drop, target-size compression	Video: hardware and ffmpeg-backed formats side by side
Audio: bitrate and format picker	Benchmark: scored results table

Features

• Images: PNG, JPEG, HEIC, TIFF, BMP, GIF, JPEG 2000, AVIF, ICO, TGA, WebP, PSD, ICNS, DDS, OpenEXR, Radiance HDR, PNM, QOI, JPEG XL, and camera RAW (CR2, CR3, NEF, ARW, DNG, and most others Apple's built-in RAW pipeline supports). Also rasterizes SVG and PDF (one image per page).
• Video: MP4/MOV (H.264, HEVC, ProRes 422) via hardware encode, plus MKV, WebM, AVI, FLV, MPEG, TS/MTS/M2TS, 3GP, ASF/WMV, MXF, VOB, DV, NUT, AV1, DNxHD, and DNxHR via ffmpeg.
• Audio: MP3, AAC, M4A, WAV, FLAC, ALAC, AIFF, OGG, Opus, WMA, AC3, E-AC3, CAF.
• Compression to a target size: set a size like 25MB and the app searches for a quality/bitrate/resolution that fits, instead of just applying a fixed setting.
• Resize: set an output width; aspect ratio is preserved.
• Benchmark tab: times real conversions on your machine and scores them 0-100 against a calibrated baseline, so results are comparable across runs and machines rather than just "fastest thing in this run wins."

Building

Requires Xcode (for a full build) or the Swift toolchain from Command Line Tools (for swift build / swift run during development). No external dependencies to install, since the ffmpeg, cwebp/dwebp, and cjxl/djxl binaries this app needs are vendored under Vendor/ and get bundled into the app automatically.

./build_app.sh
open ./EasyConvert.app

swift build / swift run also work directly for iterating on the app without packaging it.

Why vendored binaries instead of just Core Image / AVFoundation everywhere?

Apple's frameworks cover a lot: RAW decoding, HEIC/AVIF, hardware H.264/HEVC/ProRes. But they don't touch MKV, WebM, most legacy codecs, or most audio formats. For those, this app shells out to a bundled, self-contained copy of ffmpeg (and the WebP and JPEG XL reference tools, since this particular ffmpeg build wasn't compiled with encoders for those). Everything under Vendor/ was relinked with dylibbundler so it runs standalone, with no Homebrew or system ffmpeg install required on the machine running the app.

License

The app's own code (everything outside Vendor/) is licensed under GPL-3.0; see LICENSE.

The vendored ffmpeg binary in Vendor/ffmpeg/ is itself GPL-licensed (it's built with --enable-gpl for libx264/libx265). See Vendor/ffmpeg/LICENSE_NOTICE.md for details and for what to do if you need a non-GPL build instead. The WebP tools (Vendor/webp/) and JPEG XL tools (Vendor/jxl/) are both BSD-licensed.