APNG to PDF Converter
Convert APNG to PDF in your browser. APNG files usually come from animated stickers (LINE and Discord among others), UI animations and Firefox-era web graphics; PDF is the better fit for sharing, printing and submitting documents. You get a one-page PDF with the image embedded as a JPEG. Nothing is uploaded.
- Processed locally
- No upload, no wait
- No sign-up
- No watermark
Drop images here
or choose files · paste with Ctrl/⌘ V
APNG expected · other image formats also work
How to use APNG to PDF
- 1
Add your APNG files: drop them here, choose them, or paste from the clipboard.
- 2
Pick the colour that replaces transparent areas, since PDF has none.
- 3
Click Convert. Each file is decoded and encoded in a background thread on this device.
- 4
Download the .pdf files one at a time or together as a ZIP.
Why use Aback Images for apng to pdf
Where the PDF goes next
PDF opens in every browser, operating system and office suite.
PDF next to APNG
A lossy PDF usually comes out far smaller than the APNG, which stores lossless DEFLATE per frame, like PNG.
The first lossy pass
The APNG holds 8 bits per channel with nothing discarded yet. This conversion is the first lossy encode these pixels see, and hard edges and flat colour show it first.
Processed on your device
Your images are decoded, edited and encoded inside this browser tab by Web Workers. Nothing is uploaded to a server.
APNG vs PDF
What changes from APNG to PDF
Encoding: the APNG uses lossless DEFLATE per frame, like PNG; PDF uses per object: images inside are usually JPEG or Flate-compressed, and the download is a one-page PDF with the image embedded as a JPEG.
Bit depth: 8 bits per channel in the APNG; PDF allows whatever the embedded images use, and the PDF written here has 8 bits per channel.
Colour: RGB or an indexed palette in the APNG; PDF supports RGB, CMYK, greyscale or spot colours, written here as 8-bit sRGB.
Transparency: the APNG stores it as full alpha on every frame; the PDF has none, so transparent areas are filled with the colour you choose.
Animation: fcTL frame-control chunks with fdAT frame data after the first image; the PDF holds one image, so only the first frame is converted.
Metadata: the APNG can carry the same text and ICC chunks as PNG; PDF can carry document info and XMP, but nothing is copied across.
About APNG
APNG extends PNG with animation frames. Unlike GIF it keeps full 24-bit colour and smooth 8-bit transparency, at the cost of larger files.
An APNG is a valid PNG with an acTL chunk announcing the frame count and loop count; each later frame is an fcTL chunk (size, offset, delay, blend and dispose rules) followed by fdAT data. Software that does not know APNG simply shows the first frame.
APNG files usually come from animated stickers (LINE and Discord among others), UI animations and Firefox-era web graphics.
About PDF
PDF is the standard for documents that look identical everywhere. Images placed in a PDF can be printed, emailed and combined into multi-page documents.
When converting APNG to PDF makes sense
PDF is the better choice for sharing, printing and submitting documents, while APNG suits high quality animated stickers and UI animations.
PDF strengths: Opens identically on every device; Multiple pages in one file; Print-ready page sizes. Drawbacks to weigh: Not an image format: harder to edit or embed.
Limitations
- APNG frames are full colour, so a GIF target has to reduce each frame to 256 colours.
- The page matches the image size unless you choose a paper size, and the image is embedded as a JPEG.
- To put several images into one multi-page PDF, use Image to PDF.
More conversions
Related tools
Convert any image (HEIC, PNG, WebP, AVIF, RAW, PSD, SVG and 26 more) to PDF in bulk, right in your browser.
Convert JPG to PDF in your browser, one PDF page per image. Batch, private, no uploads.
Shrink JPG, PNG, WebP, AVIF and GIF files with MozJPEG, OxiPNG and modern codecs, with a live before/after preview.
Resize to exact pixels, a percentage or a longest side, with Lanczos3 and Magic Kernel resampling. Batch ready.
Strip EXIF, GPS, XMP, IPTC and comments losslessly. Pixels are never re-encoded for JPG, PNG and WebP.
Convert between 34 image formats in bulk: HEIC, WebP, AVIF, JPEG XL, PNG, JPG, GIF, TIFF, SVG, ICO, PSD, RAW and more.
Frequently asked questions
Does converting APNG to PDF lose quality?
PDF is lossy, so detail the eye barely notices is discarded to save space.
What happens to transparency when converting APNG to PDF?
APNG stores transparency as full alpha on every frame. PDF has no alpha channel, so transparent pixels are composited onto a solid colour, white unless you pick another. To keep transparency, convert to PNG, WebP or AVIF instead.
Will my animated APNG stay animated?
No. PDF holds a single image, so only the first frame is kept. Convert to animated WebP, APNG or GIF to keep the motion, or export every frame with the GIF Frame Extractor.
Can I put several images in one PDF?
This converter creates one PDF per image. To combine many images into one multi-page PDF with page size and margins, use Image to PDF.
Which apps open PDF files?
Every browser, operating system and office suite.
Are my images uploaded anywhere?
No. Processing happens inside your browser with WebAssembly and Web Workers. The site only downloads the app code and codecs; your files never leave your device. You can confirm this with the live upload counter on the tool, or in your browser's network panel.
Can I process many files at once?
Yes. Drop a whole selection or folder. Files are processed in parallel on several worker threads, each result can be downloaded on its own, and everything can be saved as one ZIP.
Is it free? Is there a file limit or watermark?
It is free with no account, no watermark and no daily limit. The only limit is your device's memory: very large images (over roughly 100 megapixels) may be refused to keep the tab from crashing.