Report 2025
Every year, Online-Umwandeln.de processes millions of files. In 2025, we once again successfully reduced, converted, and edited more than 7,000,000 files. The following evaluation shows trends and statistics on the results of our conversions. Statistics on PDF reduction: In 2025, PDF reduction was once again one of the most popular tasks at Online-Umwandeln.de. More than […]
Read MoreQT to MP3
QT stands for QuickTime and refers to Apple's container format for audio and video files. QT files with the file extension .MOV are better known, but .qt is also used, and both formats use exactly the same QuickTime container. To my knowledge, the file extension .qt has never been officially documented by Apple. Source [1], […]
Read MoreFLAC
Worth knowing about the FLAC format FLAC is the abbreviation of "Free Lossless Audio Codec" and unlike the MP3 format it means lossless data compression, which can be superior to the CD even in the case of a 24-bit resolution, but requires only about half of the data volume of a WAV file. So FLAC […]
Read MoreWMA
WMA is the abbreviation of Windows Media Audio. The lossy Microsoft-developed audio format is similar in compression to MP3 format, but optimized for Windows Media Player. The compression method filters out certain frequency ranges that are not perceptible to the ear, so that the file size can be greatly reduced. A document in WMA format […]
Read MorePrivacy Policy
Your files will: be stored up to 3 hours after conversion on our servers inactive files (before clicking conversion) will be stored up to 24 hours be deleted after this time automatically not be analyzed or opened by us not be sold, shown or made available to anyone but you are transferred with 256-bit encryption […]
Read MoreCR2
The CR2 format is one of the so-called RAW formats and is used by digital cameras to allow the greatest possible freedom when editing images on a computer. RAW formats store a vast amount of data, ensuring that digital images match the complexity of analogue photographs. CR2 (Canon Raw 2) is a rather uncommon format […]
Read MoreJFIF to JPG
The file extension .JFIF is not commonly encountered, yet it was frequently used: Due to a setting change by Microsoft (see technical explanation below), the settings were changed so that JPG images were saved as .JFIF. This meant that images from Google searches in Edge, images received in WhatsApp Web and attachments in webmail applications […]
Read More3GPP to MP4
3GPP was THE standard format on mobile phones in the early 2000s. The files were small, efficient, and thus perfectly suited to the network, display, and storage technology of the time. Today, the format is no longer used for new files. While most players can still play the format, 3GPP is unsuitable for sharing via […]
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