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Supports: ODG
.odg drawings and each converts with the same settings.ODG (OpenDocument Graphics) is the vector drawing format of the OpenDocument Format, the open office-document standard developed by OASIS (approved May 2005) and published as ISO/IEC 26300. It is the native "Draw" format of LibreOffice Draw and Apache OpenOffice Draw, used for diagrams, flowcharts, technical illustrations, and page layouts — the open-source counterpart to a Visio drawing. Under the hood an .odg file is a ZIP archive of XML that describes the shapes, text, and styles on the canvas.
That openness is also its limitation: outside of LibreOffice and OpenOffice, very little software opens an .odg directly. Microsoft Office, Google Drive's preview, most image viewers, phones, and design tools either can't render it or render it poorly. Converting it produces a file the recipient can actually open:
| Format | Type | Scales without blur | Transparency | Opens everywhere | Best for |
|---|---|---|---|---|---|
| ODG | Vector (editable) | Yes | Yes | No — LibreOffice / OpenOffice only | Editing the original drawing |
| Fixed-layout (vector inside) | Yes | Limited | Yes | Sharing a finished drawing or diagram | |
| SVG | Vector (markup) | Yes | Yes | Browsers and design tools | Scalable web graphics, CSS-styled diagrams |
| PNG | Raster | No | Yes | Yes | Slides, docs, transparent previews |
| JPG | Raster | No | No | Yes | Small previews, photos-with-gradients |
| TIFF | Raster | No | Optional | Most editors and viewers | High-DPI print and archival |
ODG is the native drawing format of LibreOffice Draw and Apache OpenOffice Draw, both free and available on Windows, macOS, and Linux — so the simplest way to open one is to install either suite. The catch is that almost nothing else reads .odg: Microsoft Office, Google Drive preview, and standard image viewers won't open it. Converting to PDF, PNG, or SVG is the reliable way to hand the drawing to someone who doesn't have LibreOffice.
It depends on whether you need to scale the result. ODG is vector — shapes defined by math — so converting to SVG keeps it vector: it stays razor-sharp at any size and can be styled with CSS, which makes it the better choice for web diagrams and anything that might be printed large. Converting to PNG or JPG rasterizes the drawing into a fixed grid of pixels, which is fine for a slide or a chat preview but blurs if you scale it up. Rule of thumb: SVG (or PDF) to preserve scalability, PNG/JPG for a quick flat image.
Yes — PDF is the closest match to the original. The shapes, text, and colors are rendered as fixed-layout vector content, so a PDF of an ODG looks the same on every device and prints crisply because the geometry stays vector rather than being flattened to pixels. Multi-page ODG drawings carry over as multiple PDF pages.
Because ODG is vector with no inherent pixel size, the DPI you choose sets how detailed the rasterized image is. For on-screen use — a slide, a web preview, a chat — 72 to 96 DPI is plenty and keeps the file small. For anything that will be printed, pick 300 DPI (the default) or higher; 600 DPI suits fine line work and archival. Higher DPI means a sharper but larger image and a slightly longer conversion.
In our testing, a single-page A4 ODG flowchart converted to PNG at the default 300 DPI produced a roughly 2480 × 3508 px image of about 250 KB, while the same drawing exported to PDF stayed under 60 KB because the geometry remains vector rather than rasterized. Exact sizes depend on how much detail and color the drawing contains, but vector targets (PDF, SVG) are consistently smaller than high-DPI raster output for line-art diagrams.
Files are uploaded over an encrypted (TLS) connection, processed on our servers, and deleted automatically after a few hours — there is no sign-up, no watermark, and your drawing is never shared or made public. The only practical limit on a very large file is upload size and your connection speed, not your device.