ODG to AVIF Converter

ODG to AVIF — and Whether a Diagram Belongs in It

AVIF wraps AV1-coded images in the HEIF container structure: royalty-free, extremely efficient on photographic content, and now supported by every current major browser. An .odg is an OpenDocument Graphics drawing — the shapes, connectors and text frames LibreOffice Draw and Apache OpenOffice Draw store as XML inside a ZIP. This converter renders the Draw document page by page and encodes each render as an AVIF. Before you do that, it is worth knowing that AVIF's strengths and a flowchart's content are close to opposites, so this page leads with the comparison rather than the button.

AVIF Against the Alternatives for Line Art

AVIF's advantage is largest on photographs and gradients. On a flat flowchart, lossless WebP will often be both smaller and exact, and PNG beats everything on compatibility. Pick AVIF when the destination asks for it, or when the drawing embeds photographic content that a lossless format would make enormous.

How to Convert ODG to AVIF

1. Upload Your ODG File: Drag the .odg onto the page or click "+ Add Files". The whole Draw document is read, so a multi-page file needs no splitting.
2. Pick a Quality Preset: "Quality Preset" runs Highest, Very High (Recommended), High, Medium, Low, Very Low and Lowest, opening on Very High. Line art needs the top of that ladder — AVIF is lossy by default and its artefacts show first exactly where a diagram lives, along crisp strokes and small type. "Specific file size" is there if you have a hard byte ceiling.
3. Set the Image resolution: "Image resolution" opens on "Keep original" and also takes a Resolution Percentage, a preset height, or an explicit Width x Height. Reducing dimensions degrades a diagram far more gracefully than reducing quality does.
4. Convert and Download: Click "Convert" and save the image. Files travel over an encrypted connection, are processed on our servers, and are deleted automatically after a few hours along with anything they produce. No sign-up, no watermark.

What Happens Between Upload and Download

A .odg is a page-layout document rather than a picture, so it does not go through an image converter directly:

At 300 DPI a US Letter page renders near 2550 × 3300 px and A4 near 2481 × 3507 px, which is generous for screen use — "Image resolution" is how you bring that down.

Frequently Asked Questions

Is AVIF a good format for a diagram?

Sometimes. Its strength is compressing continuous tone, so a drawing full of photographs or gradients genuinely benefits. A flat flowchart is the opposite case: lossless WebP usually beats it on both size and fidelity, and PNG beats it on compatibility. Use AVIF when the destination specifically wants it, and keep the quality rung high when you do.

How is AVIF related to HEIC and HEIF?

They share a container lineage. HEIF is the container standard, ISO/IEC 23008-12; HEIC is the common name for HEIF files whose images are HEVC-coded; AVIF holds AV1-coded images in the same family of boxes. The practical differences are the codec, the licensing situation and the software support — AVIF is royalty-free where HEVC is not, which is a large part of why browsers adopted it and not HEIC. Our ODG to HEIC and ODG to HEIF pages cover the other two.

Does AVIF keep transparency?

Yes — the format carries an alpha channel and current browsers composite it correctly. Whether your drawing has transparency to keep is a separate question: if the Draw page has a background fill set under Page ▸ Page Properties ▸ Background, an area that looks empty is an opaque fill and will render that way. Older desktop applications may also ignore the alpha channel, so if the transparent background is essential and the recipient's software is unknown, PNG remains the safer hand-off.

My Draw document has several pages — do they share one AVIF?

No. AVIF's container supports image sequences, but that is an animation concept rather than a document one, and this route does not produce them. Each page becomes its own .avif, numbered in page order and delivered together. For all the pages in one openable file, ODG to PDF is the target designed for it.

Will the text stay selectable in the output?

No. Every raster target turns type into pixels, so nothing in an AVIF is selectable or searchable. Keep the .odg as your editable master, and use ODG to PDF or ODG to SVG when the text has to stay live.

Which quality rung should I use for a drawing with fine labels?

Very High or Highest. AVIF at lower rungs smooths the high-contrast boundaries that make small type legible, and once smoothed it cannot be recovered. If the file is too large at Very High, reduce the pixel dimensions rather than the quality — a diagram survives downscaling far better than it survives aggressive quantisation.

Will an .avif open in the software my colleague uses?

In a browser, almost certainly: 94.65% of browsers support it, covering Chrome 85 and later, Firefox 93 and later, Safari 16.4 and later, and Edge 121 and later. Outside the browser it is less certain — many desktop image viewers, older design tools and some content-management systems still do not read AVIF. If you do not know what the recipient runs, PNG is the format that never needs explaining.

Does the AVIF carry any of the drawing's metadata?

Not in a useful form. AVIF can hold Exif and XMP blocks, but the document properties an ODG stores — author, title, the object model itself — are not mapped into them by this conversion. Treat the image as a picture of the drawing and keep the .odg as the record.

How are my uploaded files handled?

They travel over an encrypted connection, are processed on our servers, and are deleted automatically a few hours later along with any output. Nothing is shared, published or reused, no account is required, and no watermark is applied. The ODG converter hub lists every other target for this source.