ODG to PNG Converter

ODG to PNG: A Draw Document Rendered Losslessly

PNG is the right target for most LibreOffice Draw files. It is lossless, it carries a real 8-bit alpha channel, and it encodes flat fills and hard-edged strokes — the substance of almost every .odg — without the ringing a lossy codec leaves along an edge. The conversion is not an image decode: a .odg is a page-layout document, so LibreOffice opens it as a Draw document, exports it through Draw's own PDF filter, and the resulting page is rendered and written as PNG. That route is what keeps shape positions, text placement and the drawing's own page size faithful.

How to Convert ODG to PNG

1. Upload Your ODG File: Drag the .odg onto the page or click "+ Add Files". Documents from LibreOffice Draw and Apache OpenOffice Draw are both accepted, and several can be queued at once.
2. Set the Quality Preset: Under Image Compression, Quality Preset opens on "Very High (Recommended)", which runs the output through a palette quantizer — smaller files, alpha preserved, and usually indistinguishable on flat artwork. Choose Highest when you want a true-colour, unquantized PNG for an archival master.
3. Choose the Image Resolution: Image resolution starts on "Keep original", which hands back the page exactly as rendered. Switch to a Resolution Percentage, a height preset, or an explicit Width, Height or Width x Height when the destination expects a specific raster.
4. Convert and Download: Click "Convert" and take the PNGs — one per drawing page, individually or as a ZIP. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours. No sign-up, no watermark.

What Actually Happens to the Drawing

A .odg is a ZIP package of XML: content.xml holds the shapes, connectors and text frames, styles.xml holds how they look. Nothing in there is a picture, which is why the conversion needs a real OpenDocument reader rather than an image library.

Two controls further down the panel matter only when size does. Colors can reduce the palette with dithering instead of keeping the drawing's full colour set, and Compression level trades encoding time for a smaller file without touching a single pixel — it is a lossless DEFLATE setting, not a quality one.

PNG at a Glance

Frequently Asked Questions

Will the PNG keep a transparent background?

PNG is written with its alpha channel intact — the renderer only substitutes a solid colour when the target format cannot store transparency, and PNG can. What actually lands in those pixels depends on the drawing: an area with no page fill and nothing drawn on it stays transparent, while a page you gave a background colour in Draw arrives with that colour baked in. If you need a guaranteed opaque result, add an explicit background rectangle in Draw so the colour is your decision.

What pixel size will I get, and how do I change it?

The page is rendered at 300 DPI, so its physical size sets the pixel count: an A4 Draw page comes back at roughly 2480 x 3508 and a US Letter page at about 2550 x 3300. That is deliberately generous — it is a print-grade render. When you need something specific, set it under Image resolution rather than resizing afterwards, because scaling down from the full render is sharper than enlarging a small one.

Is the default PNG lossless?

Not quite, and the distinction is worth knowing. At "Very High" and below, the PNG is palette-quantized: colours are reduced and alpha is kept, which is usually invisible on a flowchart and makes the file substantially smaller. Only the Highest preset skips quantization entirely and writes a true-colour PNG. For a diagram headed to a web page the default is the better trade; for an archival master, pick Highest.

What happens to a multi-page Draw document?

Every page becomes its own PNG, numbered in page order, and a multi-page drawing therefore returns several files — downloadable individually or as a single ZIP. PNG holds exactly one image per file, so there is no version of this where four pages fit in one PNG. If you want the pages kept together in one document, ODG to PDF is the target that does that.

My PNG is bigger than I expected — what should I change?

Three levers, in order of effect. Lower the Image resolution: a 300 DPI A4 render is far more pixels than a web page needs, and halving the dimensions quarters the pixel count. Then drop the Quality Preset a step, which tightens the palette quantizer. Compression level is the last one — it only changes how hard the encoder works, never what the image looks like. There is also a Specific file size mode if you have a hard byte budget to hit.

PNG or PDF for handing someone the drawing?

PDF when the recipient will print it, zoom into it, or needs every page in one file, because PDF keeps the geometry as vectors and the text as text. PNG when the destination expects an image — a web page, a chat message, a slide, an upload form that accepts pictures but not documents. The two are not competing here so much as answering different questions.

Does the drawing stay editable after conversion?

No. Rasterizing turns shapes, connectors and text into a fixed grid of pixels: no object list, no live text, no enlarging without softening. That is the nature of any raster target, not a limitation of this one. Keep the .odg as your editable master and treat the PNG as an output — or use ODG to SVG, which keeps the paths intact and reopens in a vector editor.

How are my uploaded files handled?

Your drawing travels over an encrypted connection, is processed on our servers, and is deleted automatically a few hours later along with every image it produced. Nothing is shared, published or reused, no account is required, and no watermark is applied. The ODG converter hub lists the other targets for this source, and PNG converter covers what to do once you have the image in hand.