Supported Formats
DuckConvert supports a wide variety of file formats for entirely private, browser-based conversion. Browse our encyclopedia below to learn more about each format.
Audio Video Interleave
AVI is a multimedia container format introduced by Microsoft in 1992. It can contain both audio and video data in a file container that allows synchronous audio-with-video playback.
Archiving legacy video files and maintaining compatibility with older media players and Windows software.
AV1 Image File Format
AVIF is an ultra-modern, open-source image format based on the AV1 video codec. It offers significant file size reduction over JPEG and WebP while maintaining excellent visual quality and supporting advanced features like HDR.
Cutting-edge web development, delivering ultra-high-quality images at the lowest possible bandwidth.
Base64 Encoding
Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format. While not strictly a 'file', it's a common way to transmit files as text.
Embedding images in HTML/CSS, sending email attachments, and API data payloads.
Bitmap Image File
BMP is a raster graphics image file format used to store bitmap digital images, independently of the display device. It stores color data for each pixel without compression.
Archiving simple images where no quality loss is desired, though file sizes are usually large.
Comma-Separated Values
A CSV file is a delimited text file that uses a comma to separate values. Each line of the file is a data record. It is one of the most common formats for moving tabular data.
Exporting spreadsheet data, database backups, and data analysis pipelines.
Microsoft Word Open XML Document
DOCX is an XML-based file format developed by Microsoft for Word processing documents. It is a modern, open standard that has replaced the older binary .doc format.
Creating professional reports, writing essays, resumes, and sharing editable documents across organizations.
Electronic Publication
EPUB is an e-book file format that uses the ".epub" file extension. The term is short for electronic publication and is sometimes styled ePub. EPUB is supported by many e-readers, and compatible software is available for most smartphones, tablets, and computers.
Reading digital books, archiving texts, and sharing long-form documents.
Free Lossless Audio Codec
FLAC is an audio coding format for lossless compression of digital audio. While file sizes are larger than MP3, it preserves exactly the original audio data.
Audiophile music listening, high-fidelity archiving, and CD backups.
GeoJSON
GeoJSON is an open standard format designed for representing simple geographical features, along with their non-spatial attributes. It is based on JSON.
Web mapping applications, GIS software, and spatial data transfer APIs.
Graphics Interchange Format
GIF is a bitmap image format that supports up to 8 bits per pixel. It is well-known for its ability to support simple animations, making it ubiquitous on the internet for short, looping video clips.
Simple web animations, memes, and graphics with limited color palettes.
GPS Exchange Format
GPX is an XML schema designed as a common GPS data format for software applications. It can be used to describe waypoints, tracks, and routes.
Sharing hiking routes, biking trails, and transferring GPS data between devices.
High-Efficiency Image Container
HEIC is the file format name Apple has chosen for the new HEIF standard. It uses advanced compression algorithms to store images at half the file size of a JPEG while retaining better visual quality.
Default photo format on modern iPhones, excellent for saving storage space.
HyperText Markup Language
HTML is the standard markup language for documents designed to be displayed in a web browser. It defines the meaning and structure of web content.
Building web pages, rich email templates, and online documentation.
Windows Icon
The ICO file format is an image file format for computer icons in Microsoft Windows. ICO files contain one or more small images at multiple sizes and color depths, such that they may be scaled appropriately.
Creating favicons for websites or application icons for Windows software.
Joint Photographic Experts Group
JPG (or JPEG) is a widely used compressed image format for containing digital images. It uses lossy compression, which means some image quality is lost to achieve significantly smaller file sizes.
Best for complex photographs and realistic images where a slight loss in quality is unnoticeable.
JavaScript Object Notation
JSON is an open standard file format and data interchange format that uses human-readable text to store and transmit data objects consisting of attribute-value pairs and arrays.
Web APIs, configuration files, and modern web application data storage.
Keyhole Markup Language
KML is an XML notation for expressing geographic annotation and visualization within two-dimensional maps and three-dimensional Earth browsers like Google Earth.
Displaying geographic data, custom maps, and sharing locations or routes.
MPEG-4 Audio
M4A is an audio-only file compressed using MPEG-4 technology. It provides better sound quality and smaller file sizes compared to MP3. Apple uses it heavily for DRM-free iTunes music.
High-quality audio streaming, Apple Music playback, and efficient music storage.
Markdown
Markdown is a lightweight markup language for creating formatted text using a plain-text editor. It is widely used for blogging, documentation, and formatting read-me files.
GitHub repositories, developer documentation, and static site generators.
Matroska Video
MKV is a free, open-source container format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. It is widely used for high-definition video.
Archiving high-quality movies, anime distributions, and videos requiring multiple subtitle/audio tracks.
Apple QuickTime Movie
MOV is a multimedia container file format developed by Apple. It is compatible with both Macintosh and Windows platforms and can contain multiple tracks storing different types of media data.
Professional video editing, Apple ecosystem media sharing.
MPEG-1 Audio Layer III
MP3 is a digital audio encoding format. It uses a form of lossy data compression to reduce file sizes significantly while sounding like a faithful reproduction of the uncompressed original audio to most listeners.
Music distribution, podcasts, and general audio playback across all devices.
MPEG-4 Part 14
MP4 is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store other data such as subtitles and still images. It allows streaming over the internet.
Universal video sharing, YouTube uploads, and mobile device video playback.
Ogg Vorbis Audio
OGG is a free, open-standard container format maintained by the Xiph.Org Foundation. It frequently uses the Vorbis audio codec, which offers superior sound quality and smaller file sizes than MP3.
Game audio, independent music distribution, and streaming audio.
Portable Document Format
PDF is a file format developed by Adobe to present documents independently of application software, hardware, and operating systems. Each PDF file encapsulates a complete description of a fixed-layout flat document.
Sharing official documents, printing, e-books, and forms that must look identical on any device.
Portable Network Graphics
PNG is a popular raster graphics file format that supports lossless data compression. It was designed as an improved, non-patented replacement for Graphics Interchange Format (GIF). PNG files are notable for their ability to handle transparent backgrounds. Often processed with a PNG minifier to optimize file size for web use.
Ideal for web graphics, logos, icons, and images requiring transparency or crisp lines. Excellent candidate for a PNG minifier.
Scalable Vector Graphics
SVG is an XML-based vector image format for two-dimensional graphics. Unlike raster formats (like JPEG or PNG) which use pixels, SVGs use mathematical equations to draw shapes, allowing them to scale infinitely without losing quality.
Logos, icons, charts, and scalable illustrations for responsive web design.
Tag Image File Format
TIFF is a computer file format for storing raster graphics images, popular among graphic artists, the publishing industry, and photographers.
High-quality photography, publishing, and document scanning.
Plain Text File
A TXT file is a standard text document that contains unformatted text. It is recognized by any text editing or word processing program and can also be processed by most other software programs.
Notes, readmes, raw data storage, and scripting.
Waveform Audio File Format
WAV is an audio file format standard developed by Microsoft and IBM. It is the main format used on Windows systems for uncompressed, lossless audio.
Professional audio production, mastering, and archiving high-fidelity sound.
WebM Video Format
WebM is an audiovisual media file format primarily intended to offer a royalty-free alternative to use in the HTML5 video tag. It is sponsored by Google and heavily used on the modern web.
High-quality web video streaming, HTML5 backgrounds, and browser-based video.
Web Picture format
WebP is a modern image format developed by Google that provides superior lossless and lossy compression for images on the web. WebP lossless images are 26% smaller in size compared to PNGs.
Excellent for web publishing to reduce page load times without sacrificing image quality.
Microsoft Excel Open XML Spreadsheet
XLSX is an XML-based file format used by Microsoft Excel to store spreadsheet data, charts, macros, and formatting.
Financial modeling, data analysis, accounting, and general tabular data management.
eXtensible Markup Language
XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable.
Legacy system integration, enterprise data exchange, and RSS feeds.
YAML Ain't Markup Language
YAML is a human-readable data-serialization language. It is commonly used for configuration files and in applications where data is being stored or transmitted.
Docker configurations, CI/CD pipelines, and application settings.