Konvert 0.8.0

Konvert 0.8.0

New

• Intel Macs. Konvert now runs on macOS 11+ with Intel processors too
  (Konvert_0.8.0_macOS_Intel.zip), next to Apple Silicon, Windows and Linux.
  Thanks to @TheLastOxygen for the port.
• Hardware video encoding. Where the graphics chip can encode H.264 or AV1, it does:
  at the same bit rate, faster, and without loading the processor.
  • Windows and Linux: NVIDIA NVENC, Intel Quick Sync, AMD AMF; Linux also VA-API.
  • Konvert tries each encoder once at start with a tiny encode of a generated picture
    and uses only those that work on your computer.
  • If the graphics chip fails during a conversion, the processor finishes the file
    and Konvert tells you.
  • On by default; turn it off in Settings → Hardware acceleration.
  • The plan shows when a video will be encoded by the graphics chip.
  • CLI: --no-hardware forces the software encoders.

Notes

• On macOS, hardware encoding (VideoToolbox) is not active yet: the bundled FFmpeg
  builds do not include it, so Macs keep using the software encoders. It will come with
  the next FFmpeg build for macOS.
• As before, everything happens on your computer: hardware encoders talk to the
  graphics driver only, and Konvert makes no network connection.

Downloads

Platform	File
Windows 10/11 (64-bit)	Konvert_0.8.0_Windows_x64.zip
macOS, Apple Silicon	Konvert_0.8.0_macOS_arm.zip
macOS, Intel	Konvert_0.8.0_macOS_Intel.zip
Debian, Ubuntu, Mint… (x64 / arm64)	Konvert_0.8.0_Linux_x64_deb.zip / Konvert_0.8.0_Linux_arm_deb.zip
Fedora, openSUSE… (x64 / arm64)	Konvert_0.8.0_Linux_x64_rpm.zip / Konvert_0.8.0_Linux_arm_rpm.zip
Any Linux (x64 / arm64)	Konvert_0.8.0_Linux_x64_AppImage.zip / Konvert_0.8.0_Linux_arm_AppImage.zip

Each zip holds the package and its .sha256. See "Installation" in the README for
Gatekeeper on macOS and for checking the hash.

Konvert 0.7.0

Konvert 0.7.0

Everything still runs on your computer: no network, no telemetry.

Audio and video tools

• Tracks: choose which video, audio and subtitle tracks to keep, in which order, with their language, title and default track.
• Trim: keep a part of a file, picked on a frame of the video or on the waveform of the audio. Fast copies the streams; Precise cuts exactly.
• Extract tracks: save audio, subtitles (SRT, WebVTT, ASS) or the video on its own as separate files.
• Audio from another file: add a song, a dubbing or a voice-over to a video, or replace its sound, moved earlier or later by milliseconds.
• Volume: normalize to −16 LUFS (EBU R128, two passes), or make it louder or quieter by up to 20 dB with a limiter. Works for several files at once, each on its own.
• Join: put several audio or video files one after the other. Alike files are copied without re-encoding; different ones are fitted to the first one's size and frame rate.
• Edit now works for audio and video too: a copy in the file's own format (name-mod.ext), streams copied whenever possible.

Pictures

• Resize by percentage, pixels or long side, turn, mirror and crop (free or with fixed proportions), when converting or as an edited copy in the same format.

PDF

• Searchable PDFs and text from scans and photos with built-in OCR (PaddleOCR PP-OCRv5, Latin script), also into TXT and Word.
• Passwords: open protected PDFs, and protect new ones with AES-256 and print/copy limits.
• Watermarks and page numbers (text in any script, or a picture), previewed on the thumbnails.
• Bookmarks and fillable forms are kept when pages are moved, taken out or split.
• PDFs and photos combined into one PDF share one page editor.
• Compress also makes embedded fonts smaller.

Installation

Platform	File
Windows 10/11 (64-bit)	Konvert_0.7.0_Windows_x64.zip
macOS 11+ (Apple Silicon)	Konvert_0.7.0_macOS_arm.zip
Linux x86_64	Konvert_0.7.0_Linux_x64_deb.zip, …_rpm.zip, …_AppImage.zip
Linux arm64	Konvert_0.7.0_Linux_arm_deb.zip, …_rpm.zip, …_AppImage.zip

Each zip holds the package and its .sha256 file.
Windows installer SHA-256: 310d43f0742331ed3db0bda13d8fda4a43d6690ad7c003ae28a5ba6c7cb77ffd

The macOS app is not notarized: the first time, open it from System Settings → Privacy & Security → Open Anyway (see the README).

OCR models: PaddleOCR PP-OCRv5 (oar-ocr v0.1.0)

Mirror of the OCR models bundled with Konvert, used to read scanned pages and photos of documents (searchable PDFs, text extraction). Konvert downloads them only at build time (npm run setup:ocr) and verifies their SHA-256 hashes; the installed app never downloads anything.

These files are an unmodified copy of the ONNX models published in the oar-ocr v0.1.0 release (https://github.com/GreatV/oar-ocr/releases/tag/v0.1.0), converted from the PaddleOCR PP-OCRv5 models (https://github.com/PaddlePaddle/PaddleOCR).

File	Content	SHA-256
ppocrv5_mobile_det.onnx	PP-OCRv5 mobile text detection	409fc0f60a5540afd69c5a5177543b826c1c1e858c30e799dea4e38d6dfff131
latin_ppocrv5_mobile_rec.onnx	PP-OCRv5 mobile recognition of Latin script	773fa0a8db8b9e463a05d79b4fd6b06cd6f6216eb24ab2e243b0d51a6ec0d7b8
ppocrv5_latin_dict.txt	Characters of the recognition model	3c0a8a79b612653c25f765271714f71281e4e955962c153e272b7b8c1d2b13ff

License: Apache License 2.0 (PaddleOCR models; oar-ocr conversion). The hashes are also pinned in scripts/ocr-manifest.json.

Konvert 0.6.0

Konvert 0.6.0

New: Compress

Choose Compress, above the formats, to make a smaller copy of a file in its own format: for example a PDF that is too large for an upload form.

• Light, Strong (recommended) or Maximum: from hardly visible changes to the smallest file that is still readable.
• Stay under a size: type a limit in MB (a common upload limit is suggested) and Konvert compresses more until the file fits. If it cannot get there, it keeps the smallest result and tells you.
• PDF: pictures are scaled to the resolution they actually have on the page and stored again (photos as JPEG, screenshots and charts sharp, with 256 colors at most), and unused objects, duplicates, metadata and page thumbnails go. Text, drawings, links, bookmarks and forms stay as they are. Only if you turn it on, pages may become pictures when nothing else is small enough (their text can then no longer be selected).
• Photos, videos, sound and Word documents get smaller too: lower quality or bit rate, smaller pictures or video at the stronger levels, 256-color PNGs, mono sound at Maximum.
• Several files at once, even of different kinds: each keeps its own format.
• The copy is saved as name-compressed.pdf (name-compresso.pdf in Italian) and is never larger than the original: if nothing can be gained, no file is written. The end screen shows how much smaller it got.

New: Word documents

• DOCX → PDF, without Word or any other program: text and its formatting, styles, numbered and bulleted lists, tables with merged cells and shading, pictures, headers and footers with page numbers, footnotes, page size, margins and columns. The document is laid out by the Typst typesetting engine, built into Konvert, with the fonts installed on your computer; the PDF has selectable text. Line and page breaks may differ slightly from Word's; text boxes, charts, equations and embedded objects are left out (Konvert tells you).
• PDF → DOCX: the text and pictures of each page become a Word document to edit, with headings, bold and italic, colors, superscripts and subscripts, list items, table rows, colored title bars and two-column pages read in order. Drawings and exact positions are not kept. Scanned pages without text stay pictures (no OCR).
• A Word document can also join pictures and PDFs in one PDF.
• .docx files open with Open with → Konvert and from the file picker.

Privacy

Unchanged: Konvert makes no network connections, has no telemetry and needs no account. Word documents are read, laid out and written on your computer; pictures linked from outside a document, fields and macros are never fetched or run. PDFs and Word documents made by Konvert carry no author, dates, file names or paths.

Downloads

Platform	File
Windows 10/11 (64-bit)	Konvert_0.6.0_Windows_x64.zip
macOS 11+ (Apple Silicon)	Konvert_0.6.0_macOS_arm.zip
Linux x86_64	Konvert_0.6.0_Linux_x64_deb.zip, …_rpm.zip, …_AppImage.zip
Linux arm64	Konvert_0.6.0_Linux_arm_deb.zip, …_rpm.zip, …_AppImage.zip

Each zip holds the package and its .sha256 checksum. On macOS the app is not notarized yet: the first time, open it from System Settings → Privacy & Security → Open Anyway (see the README).

Full changelog: v0.5.0...v0.6.0

Konvert 0.5.0

Konvert 0.5.0

New: PDF page tools

Choose PDF for a single PDF to edit its pages:

• See every page as a thumbnail, drawn on your computer.
• Move pages by dragging them, turn them left or right, take pages out (and put them back), or keep only some pages by typing a range such as 1-3, 5, 8-.
• Use the keyboard: arrow keys to choose a page, Ctrl + arrow keys to move it, R to turn it, Delete to take it out, S to split after it.
• Split a PDF: a new PDF at every page, every 2, 3, 4, 5, 10 or 20 pages, or exactly where you click the scissors between two pages. The new PDFs are saved in a folder named after the document (Report/Report-pages-01-03.pdf, …).
• Edit and split together: take out, turn and move pages, then split the result.

The original PDF is never changed. Pages are copied as they are, without re-compression, and only with what they use: a few pages taken from a large document make a small file. Links to pages that were left out are removed; the other internal links keep working. Bookmarks and fillable form fields are not carried over, and Konvert tells you when a PDF has them. Like every PDF made by Konvert, the new files carry no author, dates, file names or paths.

Fixes

• Drop-down lists (for example Language and Appearance in Settings) are readable again in the dark theme. Before, their choices showed light text on a light background.

Privacy

Unchanged: Konvert makes no network connections, has no telemetry and needs no account. Page thumbnails are drawn locally; a network monitor of the running app saw no connection while editing pages.

Downloads

Platform	File
Windows 10/11 (64-bit)	Konvert_0.5.0_Windows_x64.zip
macOS 11+ (Apple Silicon)	Konvert_0.5.0_macOS_arm.zip
Linux x86_64	Konvert_0.5.0_Linux_x64_deb.zip, …_rpm.zip, …_AppImage.zip
Linux arm64	Konvert_0.5.0_Linux_arm_deb.zip, …_rpm.zip, …_AppImage.zip

Each zip holds the package and its .sha256 checksum. On macOS the app is not notarized yet: the first time, open it from System Settings → Privacy & Security → Open Anyway (see the README).

Full changelog: v0.4.0...v0.5.0

Konvert 0.4.0

Konvert 0.4.0

Many more formats, pictures from videos, photo metadata and PDF documents. As always,
everything happens on your computer: no network connections, no telemetry, no account.

PDF documents

• Pictures → PDF: one picture per page, on A4 or Letter paper or on a page shaped like
  the photo, with a choice of orientation and margins. Several photos go into one PDF
  (or one PDF each).
• PDF → pictures: every page or only some (1-3, 5, 8-), as PNG, JPG or WebP from 72 to
  600 dpi.
• Combine PDFs and pictures into a single PDF, in the order you choose.
• PDFs created by Konvert contain no author, dates, file names or paths.

More formats

• Audio: ALAC (M4A), AAC, AC3, E-AC3, MP2, CAF, MKA.
• Video: TS, MPG (MPEG-2), 3GP, FLV, animated WebP, APNG.
• Pictures: BMP, TIFF, GIF, multi-size Windows icons (ICO), JPEG XL (Windows and Linux).
• New inputs: SVG drawings, PDF, JPEG XL, ICO, APNG, CAF, E-AC3, MP2.
• Less common formats wait behind More formats, so the usual choices stay in front.

Pictures from videos

• One frame at the moment you choose, or a series (one picture every 0.5 s to 1 min,
  or every frame) saved in a new folder named after the video.

Photos and metadata

• EXIF data (camera, date, location) is now kept in JPG, PNG, WebP and AVIF, also from
  HEIC photos.
• Remove the location: a switch to leave GPS data out of converted photos and videos
  (off by default).
• Cover art is kept in AIFF, OGG and Opus too; Konvert tells you when a format cannot hold
  tags.

Fixes

• Videos recorded with the phone upright are no longer stretched when resized.

Good to know

• JPEG XL is not available on macOS (the macOS FFmpeg build has no libjxl).
• Password-protected PDFs are not supported. When combining PDFs, bookmarks, form fields
  and attachments are not kept.
• Camera RAW files (DNG, CR2, NEF…) are not supported.
• The Windows installer is not code-signed (SmartScreen may warn) and the macOS app is not
  notarized (allow it once in Gatekeeper): see the README.

Downloads

System	File
Windows 10/11 (64-bit)	Konvert_0.4.0_Windows_x64.zip
macOS 11+ (Apple Silicon)	Konvert_0.4.0_macOS_arm.zip
Linux x86_64	Konvert_0.4.0_Linux_x64_deb.zip, _rpm.zip or _AppImage.zip
Linux arm64	Konvert_0.4.0_Linux_arm_deb.zip, _rpm.zip or _AppImage.zip

Each zip contains the package and its .sha256: check it before opening the package
(instructions in the README). Windows installer SHA-256:
b7b2e6c60037f225b2f15af4b31c599bb67e6c1f77e3e578c69c0636a157352a

Konvert 0.3.0

Konvert is now available for macOS (Apple Silicon) and Linux (x86_64), in addition to Windows.

New

• macOS 11 or later on Apple Silicon (M1 and later): .dmg disk image. Konvert appears in Finder's Open With menu for the supported formats without becoming the default app, and ⌘Q asks for confirmation while a conversion is running.
• Linux x86_64: .deb (Debian, Ubuntu, Mint…), .rpm (Fedora, openSUSE…) and a portable AppImage. The .deb and .rpm packages add Konvert to the applications menu and to the Open with menu of the supported formats.
• On macOS, FFmpeg is built without any network protocol at all.

Fixed

• On macOS and Linux, converted files can be saved to exFAT/FAT drives and network shares.

macOS: first launch

Konvert for macOS is not notarized by Apple yet, so the first time macOS says that it cannot verify the app. Open Konvert once, then go to System Settings → Privacy & Security and click Open Anyway. Later launches open normally. Alternatively, in Terminal: xattr -dr com.apple.quarantine /Applications/Konvert.app.

Downloads

System	File
Windows 10/11 (64-bit)	Konvert_0.3.0_x64-setup.exe
macOS, Apple Silicon	Konvert_0.3.0_aarch64.dmg
Debian/Ubuntu (x86_64)	Konvert_0.3.0_amd64.deb
Fedora/openSUSE (x86_64)	Konvert-0.3.0-1.x86_64.rpm
Any Linux distribution (x86_64)	Konvert_0.3.0_amd64.AppImage

Linux arm64 packages are coming in a later release.

Verify the checksum before opening a file: each one has a .sha256 file next to it (see "Verifying the SHA-256 checksum" in the README).

Konvert works entirely on your computer: no network connections, no telemetry, no account.

Konvert 0.2.0

Konvert 0.2.0: photos

Konvert now converts pictures too, still entirely on your computer: no network
connections, no telemetry, no account.

New

• Picture conversion: open JPG/JPEG, PNG, WebP, AVIF, HEIC/HEIF, BMP and TIFF
  files and convert them to JPG, PNG, WebP or AVIF.
• HEIC photos from iPhone are supported, including photos stored as a grid of tiles.
• Photos are turned the right way up automatically (EXIF orientation and HEIC rotation).
• Quality presets (Best quality, Balanced, Small file) for every picture format.
  From a lossless source such as PNG, "Best quality" WebP is lossless.
• Advanced options for pictures: picture quality and maximum size (longest side).
  Pictures are never enlarged.
• Transparency is kept in PNG, WebP and AVIF. In JPG, transparent areas become white,
  and Konvert warns you before converting.
• EXIF data (camera, date, location) is kept when a JPEG, PNG or WebP picture becomes
  a PNG. The other conversions cannot keep it, and Konvert tells you so beforehand.
• Estimated size and clear warnings before every picture conversion.
• Open with → Konvert now also appears for picture files. Your default apps are
  never changed.

Fixed

• "Open with" was missing for .aifc, .alac, .qt and .wave files, which the file
  picker already accepted.

Known issue

• Videos recorded with the phone held upright come out stretched when Konvert resizes
  them (GIF, or Maximum resolution under Advanced). A fix is planned for an
  upcoming update.

Install or update

1. Download Konvert_0.2.0_x64-setup.exe and Konvert_0.2.0_x64-setup.exe.sha256.
2. Verify the checksum:
   (Get-FileHash .\Konvert_0.2.0_x64-setup.exe -Algorithm SHA256).Hash
   It must match
   5cce9fe6ebf043392bc54c41cb4dac2cb56352b298ae9b578b69cebe7e614b67.
3. Run the installer. It installs over 0.1.0, and your preferences are kept. If it offers
   to uninstall the previous version first, leave "Delete the application data" unchecked.

The installer is not code-signed yet, so Windows SmartScreen may show "Windows protected
your PC". After checking the checksum, choose More info → Run anyway.

FFmpeg is unchanged (LGPL build n9.0.2-36). Its sources are in the
ffmpeg-n9.0.2-36 pre-release.

Konvert 0.1.0

First public release of Konvert: an audio and video converter for Windows that works entirely on your computer. No network connections, no telemetry, no account.

Highlights

• Drag and drop files, use Choose files…, or right-click a file → Open with → Konvert
• Offers only the formats that make sense for your files
  • Audio: MP3, M4A (AAC), WAV, FLAC, OGG, OPUS, WMA, AIFF
  • Video: MP4, MKV, MOV, WebM, AVI, GIF, or audio only
• Three quality presets with a size estimate, plus advanced settings (bitrate, sample rate, channels, resolution, frame rate, codec)
• Copies streams without re-encoding when they are already compatible: instant and lossless
• Clear warnings about quality loss and about dropped cover art, subtitles or tracks
• Converts several files at once, with per-file and overall progress, and you can cancel at any time
• Never overwrites existing files
• English and Italian interface, light and dark theme, Mica effect on Windows 11

Install

1. Download Konvert_0.1.0_x64-setup.exe and Konvert_0.1.0_x64-setup.exe.sha256.
2. Verify the checksum in PowerShell:
   (Get-FileHash .\Konvert_0.1.0_x64-setup.exe -Algorithm SHA256).Hash
   It must match:
   15a7b649e41f28e9d53b92c25c2060c10967244fbed1dbcabad001a747c6a2df
3. Run the installer. It installs for your user only (no admin rights) and never downloads anything.

SmartScreen: the installer is not code-signed yet, so Windows may show "Windows protected your PC". After verifying the checksum, choose More info → Run anyway.

Requirements: Windows 10/11, 64-bit, and the Microsoft Edge WebView2 Runtime (already included in Windows 11 and in an up-to-date Windows 10).

Privacy

Konvert makes no network connections at all. FFmpeg runs restricted to local files, and there are no updates or telemetry. See the Privacy section for how to verify this yourself.

Licenses

Konvert is released under the MIT license. It bundles FFmpeg under the LGPL-3.0-or-later (corresponding source: FFmpeg n9.0.2-36 mirror). H.264 patents are not covered by the BSD license of OpenH264. Full list: THIRD_PARTY_LICENSES.

Known limitations

• Windows only for now: Linux and macOS are planned.
• Image files (JPG, PNG, WebP, AVIF) are not supported yet.
• No hardware video encoding yet.

Corresponding source (attached): FFmpeg-6882969ce9….zip is FFmpeg at the exact commit used for this build; FFmpeg-Builds-autobuild-2026-10-25-13-00.zip is the build recipe with every library version and configure flag.

Componente di sviluppo: FFmpeg n9.0.2 (non è una versione di Konvert)

Mirror of the FFmpeg builds bundled with Konvert. This is not a Konvert release: to install Konvert, see the latest release.

It exists so that the exact FFmpeg builds stay available even if the upstream autobuilds are removed, and to make the corresponding source code available as required by the LGPL.

Builds (FFmpeg n9.0.2-36-g6882969ce9, source commit FFmpeg/FFmpeg@6882969ce9)

• Windows x64: BtbN FFmpeg-Builds, variant win64-lgpl-shared
• Linux x64 / arm64: BtbN FFmpeg-Builds, variants linux64-lgpl and linuxarm64-lgpl
  • Upstream release: https://github.com/BtbN/FFmpeg-Builds/releases/tag/autobuild-2026-10-25-13-00
  • Build recipe (library versions and configure flags): https://github.com/BtbN/FFmpeg-Builds/tree/autobuild-2026-10-25-13-00 (also attached as FFmpeg-Builds-autobuild-2026-10-25-13-00.zip)
• macOS arm64 (Apple Silicon) and x86_64 (Intel): built by scripts/build-ffmpeg-macos.sh of the Konvert repository, on a Mac with that processor, with the same library commits as the BtbN builds, statically linked against macOS system libraries only, configured with --disable-network. The complete corresponding source code (FFmpeg, every library and the build script) is in ffmpeg-n9.0.2-36-g6882969ce9-macos-arm64-lgpl-sources.tar.xz and ffmpeg-n9.0.2-36-g6882969ce9-macos-x86_64-lgpl-sources.tar.xz.

License: LGPL-3.0-or-later. Configured without --enable-gpl and without --enable-nonfree.

SHA-256

File	SHA-256
ffmpeg-n9.0.2-36-g6882969ce9-win64-lgpl-shared-9.0.zip	72e3fbaf17f8d5162c3010f9e58872fcb93ba2b03731fd0fff1ca9aabb616ea6
ffmpeg-n9.0.2-36-g6882969ce9-linux64-lgpl-9.0.tar.xz	e3164231897b2e503686acd5829c4dab945d9ee02bdc98ef69793ecc72fc0546
ffmpeg-n9.0.2-36-g6882969ce9-linuxarm64-lgpl-9.0.tar.xz	9918a774293c51ecb8c01cde73efaab9d6e34e32f639808f818a0c4535fd8641
ffmpeg-n9.0.2-36-g6882969ce9-macos-arm64-lgpl.tar.xz	826c17e369074a1e5006428acfbcf6e63b56328de1d6b634f5fca89669acf4c0
ffmpeg-n9.0.2-36-g6882969ce9-macos-arm64-lgpl-sources.tar.xz	f6798fb19f0625664cd18aad2bbf537422432b1fbad251674133da99989c1f2a
ffmpeg-n9.0.2-36-g6882969ce9-macos-x86_64-lgpl.tar.xz	562760b479412116577c2b982685e89bca6bd2bea9b94bc64b92e732b81d0ac5
ffmpeg-n9.0.2-36-g6882969ce9-macos-x86_64-lgpl-sources.tar.xz	a877fd152141df8f73a693bfd3153f2bbdb44da45d218fc1068f208fed065f33

The archives and their hashes are pinned in scripts/ffmpeg-manifest.json; scripts/setup-ffmpeg.ps1 and scripts/setup-ffmpeg.sh verify the hash before using an archive.