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Need help?Convert ODT to APNG
An ODT is an OpenDocument Text file — the native document format of LibreOffice Writer and Apache OpenOffice Writer. APNG is Animated PNG, a still-image format extended with optional frames. Converting one to the other renders each page of the document at the resolution you choose and writes it out under the .apng extension.
Read the next section before you convert, because the honest answer surprises most people who arrive here: the result is not an animation. A document source cannot produce animated frames on this page, so what you receive is one still image per page. If you wanted the pages to play as a self-advancing flip-through, that is a different conversion and it is linked below.
What You Actually Get
| Question | Answer |
|---|---|
| Is the output animated? | No. Each file holds one still page |
| How many files? | One per page of the rendered document — a five-page ODT gives five images |
| What is inside the file? | A standard PNG datastream: header, pixel data, end marker |
| Are the APNG animation chunks present? | No. There is no acTL control chunk and no frame chunks, which is what makes a PNG animated |
| Will it open as an ordinary image? | Yes, everywhere PNG opens — the bytes are a valid PNG |
| Colour | 8-bit-per-channel RGB, fully opaque |
| Transparency | Not available here; the page is flattened onto the background colour you choose |
Renaming it to .png |
Safe, and usually the more useful filename |
The reason is structural rather than a setting you missed. Assembling several rendered pages into one animated file is only wired up for GIF output, and the "Combine?" control that chooses between a single animation and individual files does not apply to document sources at all. There is no animation option on this page to switch on — which is also why you will not find frame delay, loop count, or frame-rate controls in Advanced Options.
APNG at a Glance
| Property | Value |
|---|---|
| Full name | Animated Portable Network Graphics |
| Specification | Folded into the core PNG Specification (Third Edition), a W3C Recommendation since 24 June 2025 |
| Media types | image/apng for animated files, image/png for still ones |
| Origin | Proposed at Mozilla in 2004 as a lighter alternative to MNG; long a de facto extension before the 2025 standardisation |
| Colour depth | Up to 16 bits per channel, with a full alpha channel — the same pixel model as PNG |
| Compression | Lossless DEFLATE, identical to PNG |
| Animation data | Optional acTL, fcTL, and fdAT chunks. A file without them is simply a PNG |
| Browser support | 95.94% globally per caniuse — Chrome 59+, Firefox 3+, Safari 8+, Edge 79+, Opera 46+ |
| Fallback behaviour | Decoders that do not understand APNG display the first frame, so nothing breaks |
| Not supported by | Internet Explorer, Opera Mini |
How to Convert ODT to APNG
- Upload Your ODT File: Drag and drop the
.odtonto the page or click "Add Files" to browse. Several documents can be queued and converted in one batch. - Pick a Conversion Quality (Render DPI): This is the resolution each page is drawn at, from 72 DPI up to 1200 DPI, with 300 DPI preselected. A US Letter page at 300 DPI becomes a 2550 × 3300 pixel image; 150 DPI gives a quarter of the pixels and a much smaller file.
- Choose the Image Transparency Colour and Image Resolution: White is preselected as the page background; pick another colour to tint it. Under Image resolution, "Keep original" is preselected, and you can scale the rendered page by percentage, to a preset height, or to exact dimensions.
- Convert and Download: Click Convert and save the images, one numbered file per page. No sign-up, no watermark; files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours.
Frequently Asked Questions
Why is my APNG not animating?
Because no animation was ever created. Every file this page produces contains a single still page and none of the chunks that make a PNG animate — in our testing, a rendered page written out through this path contained only the standard PNG header, pixel data, and end marker, with no animation control chunk anywhere in the file. That is the expected result for a document source, not a fault with your file or your viewer.
How do I get one animated file that flips through all my pages?
Convert to GIF instead. ODT to GIF is the one target that assembles the rendered pages into a single self-playing file, so a five-page document becomes a five-frame animation rather than five separate images. The trade is GIF's 256-colour palette per frame, which is fine for text but can band a page with photographs or gradients on it.
Should I just use PNG instead?
Almost certainly, yes. ODT to PNG produces the same per-page still images with the .png extension that every application, upload form, and image viewer expects, and it exposes quality and file-size controls that this page does not. Choose APNG only when a specific downstream tool insists on files named .apng.
Can I open these files without special software?
Yes. Because the bytes are a valid PNG datastream, any image viewer, browser, or editor that reads PNG will display them — and renaming the file to .png is safe if a program refuses to open it based on the extension alone. Some upload forms filter by extension rather than by content, which is the most common reason a .apng file gets rejected.
Why are there no quality or file-size controls on this page?
Because the image-compression group does not apply to APNG output, so quality presets, target file size, and colour-reduction controls are not shown. The two levers you do have are the Conversion Quality DPI, which decides how many pixels each page is drawn with, and Image resolution, which scales the rendered page afterwards. Dropping from 300 DPI to 150 DPI is by far the biggest size saving available here.
Can the page background be transparent?
Not on this page. The Image Transparency control offers solid colours only, with White preselected, so every page is flattened onto an opaque background. If you need a page rendered with a genuine alpha channel — text and graphics only, no white rectangle — use ODT to PNG and set Image Transparency to "Unchanged", which is offered there.
How many images will my document produce?
One per rendered page, and the page count comes from the document's own layout: paper size, margins, font size, and any manual page breaks. That is often more pages than you expect from a long document, since the export reflows nothing — it renders exactly what LibreOffice Writer would print.
Do headings, tables, images, and fonts survive the render?
Visually, yes. Each page is rendered from a faithful PDF export of the document, so headings, tables, embedded images, and font substitutions appear exactly as they would on paper, and the fonts are resolved before rasterisation. What does not survive is anything structural: text stops being text, so there is no selecting, searching, copying, or reflowing. Convert to ODT to PDF if those matter.
What happens to my document after the conversion?
It is uploaded over an encrypted connection, rendered on our servers, and deleted automatically after a few hours along with the images produced from it. There is no sign-up, no watermark, and nothing is shared or made public. On a long document, upload time is the real constraint rather than processing.