openconvert
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Convert any file on your machine.

Images, audio, video, documents; 260 routes across 50 formats, using locally run AI models where useful.

Download OpenConvert

Image · Remove backgroundImage · UpscaleImage · Invert coloursImage · Black and whiteImage · CompressImage · Colour pickerImage · Read text in imagePDF · Extract textPDF · CompressPDF · PasswordPDF · SplitPDF · Merge documentsPDF · Modify pagesPDF · SignAudio · Remove background noiseAudio · Transcribe to text
Open an image fileOpen an image fileOpen an image fileOpen an image fileOpen an image fileOpen an image fileOpen an image fileOpen a pdf fileOpen a pdf fileOpen a pdf fileOpen a pdf fileOpen a pdf fileOpen a pdf fileOpen a pdf fileOpen an audio fileOpen an audio file

Runs on your machine in the desktop app See what it does →

Settings

Sandbox

Worker reuse Untrusted files always get their own
Sandbox everything possible Confines the in-process routes too

Output

Where outputs go
Naming template {name}.{ext}
Keep original metadata GPS and camera serial are dropped either way

History

Write a receipt for every job
Receipts stored 0 stored · 0 MB

Local AI models

Remove image backgrounds 10.7 MB on disk · MIT
Clean up noisy audio 8.3 MB on disk · MIT
Transcribe speech 77.6 MB on disk · MIT
Enlarge images 63.9 MB on disk · BSD-3-Clause

Appearance

Theme

Advanced

Weekly engine revocation list The only network call in the program
Panic stop Ctrl+Shift+.

A real sample: the conversions and tools your browser can do run here, on your machine. What it cannot do is greyed out and says why. Download the desktop app for every feature.

Built to be the last converter you install.

Local AI models for advanced conversions

Optional, off by default. No data is sent anywhere; the model runs on your computer. That is what makes state-of-the-art conversions free.

Remove background Audio transcript Upscaling Text extraction Audio denoising

Open source

Apache-2.0, engines included. No feature is held back for a paid tier, because there is no paid tier to hold it in.

Every licence →

260 routes

Pick a file, pick a target. The router finds the way.

50 formats, both directions where the route exists.

Completely offline

Every conversion runs with no network capability at all. The only connection the app makes is downloading an AI model from Hugging Face, if you ask for one.

Drop in as many as you like

One target filetype for everything, or a different one per row. No practical limit on how many files go in at once.

A batch of five files queued in OpenConvert, each with its own source format and target. A batch of five files queued in OpenConvert, each with its own source format and target.

Every file opens in a cage

Convert files knowing your computer stays safe. Parsers are where the exploits live, so each one runs confined by the OS with file descriptors instead of paths. A hostile file has nothing to reach.

How the confinement works →

How it compares to other solutions.

Measured against the most common options.

OpenConvert compared with iLovePDF, CloudConvert and other desktop converters
Feature iLovePDF cloud CloudConvert cloud Other desktop converters desktop OpenConvert this app
Free & open source no €60/yr desktop no yes yes Apache-2.0
Local AI models Background removal, transcription, upscaling, text extraction, all on your computer no no no yes
Completely offline no Uploads no Uploads yes yes
No conversion limits Files per day, file size, minutes of processing no no partly Varies yes
All in one tool Documents, images, audio and video in the same window partly PDF yes partly Varies yes

The only app you need to manage files.

  • Remove background: on-device matting, nothing uploaded, different AI models available
  • Upscale x2 or x4 without the usual blur using a local AI model
  • Invert colours, black and white
  • Compress to the quality you pick, without changing the format
  • Read the text out of a screenshot or a scan
  • Colour picker, sampled from the image itself
  • Convert between HEIC, JPEG, PNG, WebP, AVIF, TIFF, JPEG XL, SVG and camera raw
  • Merge documents into one file while keeping hyperlinks, or split one into many
  • Keep, drop, reorder, rotate or crop pages
  • Add a password, or remove one you know
  • Compress without touching a single image
  • Sign, with the signature kept on your machine
  • Render any page to an image
  • Read a scan into searchable text
  • PDF to Markdown, HTML, DOCX or ODT
  • Transcribe speech into text you can search
  • Remove background noise from a recording
  • Convert between FLAC, WAV, MP3, OGG and M4A
  • Pull the audio out of a video without re-encoding it
The OpenConvert image workspace with a subject cut out of its background onto transparency. The OpenConvert image workspace with a subject cut out of its background onto transparency.
The same workspace enlarging an image four times on device. The same workspace enlarging an image four times on device.
The colour picker sampling a value straight out of the image. The colour picker sampling a value straight out of the image.
Two PDFs loaded in OpenConvert, ready to merge into one file. Two PDFs loaded in OpenConvert, ready to merge into one file.
A document’s pages listed so they can be moved or dropped before the file is written. A document’s pages listed so they can be moved or dropped before the file is written.
A recording and the transcript OpenConvert produced from it locally. A recording and the transcript OpenConvert produced from it locally.
The same recording with its background noise removed on this machine. The same recording with its background noise removed on this machine.

Missing a feature? We'll build it.

You get to decide what we build next. Put your idea on the board, vote on everyone else's, and the ones people actually want move up the list.

Add an idea See the whole board →

Nobody has asked for anything yet.

The board is open and empty. Whatever you were about to install a second tool for — put it here.

Open the first idea →

Get OpenConvert

Apache-2.0, and every feature is in the free build.

Questions people actually ask.

Yes, and there is no paid tier holding a feature back. OpenConvert is Apache-2.0, so open source and community driven. Support contracts and enterprise licensing fund the work — talk to us about that if you are one.

Your files never leave your computer. Two things reach the network: downloading the AI models you chose and their updates.

You still have the original. Every write in the program is exclusive and there is no truncating open anywhere in it, so a conversion cannot replace a file you already had unless you specifically want it to. The receipt beside the output names the engine, its version, the parameters and the operation class, so a wrong result can be traced. If this ever happens, send us the receipt on Discord or GitHub.

No. Conversion works in full without a single model on disk, and none is installed unless you ask for one. Some features are driven by these models, so those are the ones you lose without them.

A website converter has your file. That is the entire difference, and it is the reason the FBI issued an advisory about free online converters in March 2025. OpenConvert reads the bytes on your own machine, inside an OS sandbox that has no network capability at all.

I am Fabrizio, an aerospace engineering student who writes software in his spare time. I made OpenConvert because I needed it, and thought of sharing it with everyone else. The licence answers the second half: Apache-2.0 with the whole engine layer in the repository means the software outlives whoever is maintaining it.