An open file format has a publicly available specification that anyone can use to read and write files, often maintained by a standards body, while a proprietary format is defined and controlled by a single vendor and may be undocumented or restricted.
Why it matters
The format decides who can open your files in ten years. Open formats such as PDF, PNG, ODF, CSV and plain text are readable by many tools and are easier to preserve. Proprietary formats can offer rich features but risk vendor lock-in: if the software is discontinued or too expensive, converting your data may be hard or lossy. Some formats are in between, such as .docx, which is standardised but heavily shaped by one product.
Example
A design saved as .psd is best handled in Adobe software, though other tools import it partially. Exporting the same artwork as .png or .svg yields formats with public specifications, which any browser or editor can open.
Common misconceptions
- "Open format" does not mean "open source software". They are separate ideas.
- Free to download does not mean open; a format can be free of charge yet controlled.
- Proprietary does not mean bad, only less portable.
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यह पेज सामान्य जानकारी है, जिसे हमारी संपादकीय टीम ने लिखा है और दस्तावेज़ीकरण बदलने पर अपडेट किया जाता है। सर्वर और प्रदाता अलग-अलग होते हैं, इसलिए बदलाव पहले सुरक्षित तरीके से जाँचें। देखें: संपादकीय नीति और अस्वीकरण.