Merge APNG to PDF Online
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Supports: APNG, PNG
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Need help?Merge APNG to PDF Online
Combine several APNG (animated PNG) images into one paginated PDF document — each file becomes a page, in the order you arrange them. PDF is a static format, so the animation does not play: every APNG contributes its first frame as a still image, which is exactly the frame that already renders in any standard PNG viewer. Useful for bundling exported sprite frames, sticker sets, or UI-motion previews into a single shareable, printable file instead of a folder of loose images.
How to Merge APNG to PDF
- Upload Your APNG Files: Drag and drop, or click "Upload" to add multiple APNG files at once. Drag the file tiles to reorder them — the top tile becomes page 1, the next becomes page 2, and so on.
- Pick Combine Mode and Paper Size: Leave "Combine?" on "Single PDF" to fuse every APNG into one multi-page document; switch to "Individual PDFs" for one PDF per file. Paper size defaults to A4 — pick Letter, Legal, A3, Tabloid, or "Original" (a page sized to each image's pixels) when A4 doesn't fit.
- Set Placement, Layout, and Margin (Optional): Page layout is Portrait (default) or Landscape. Image placement defaults to "Contained" (the whole frame stays visible, letterboxed); "Cover" fills the page edge-to-edge and crops the overflow. Image alignment is Top / Center / Bottom, and Margin presets run from No margin (0") to Large (2x1").
- Tune Quality, Then Merge: Quality Percentage defaults to 75 — raise toward 95-100 for archival sharpness, drop to 40-60 for an email-sized PDF. Image Transparency keeps APNG's alpha "Unchanged" or flattens it ("Removed") to a white background for print. Click Merge. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared.
What Happens to APNG Animation in the PDF
| Behavior | Result in the merged PDF |
|---|---|
| Animation playback | Not preserved — PDF has no APNG animation model; the first frame becomes a still page |
| Which frame is kept | The first frame (APNG stores it as a standard PNG stream, so it is the universally readable image) |
| Alpha transparency | Preserved when Image Transparency is "Unchanged"; flattened to white when "Removed" |
| Page order | Set by the order of the file tiles — drag to rearrange before merging |
| Frame count | Extra frames (the acTL / fcTL / fdAT animation chunks) are discarded |
If keeping the motion matters more than a printable document, convert each file with APNG to MP4 instead — a separate video plays everywhere, whereas most PDF viewers won't autoplay embedded media. To merge a single APNG, see APNG to PDF; to combine APNGs with JPGs and PNGs in the same document, use Merge image to PDF.
Frequently Asked Questions
Does the APNG animation play in the merged PDF?
No. The PDF format has no native model for animated raster images, so each APNG is reduced to a single still page. The frame you get is the first frame, which APNG deliberately stores as a normal PNG stream so that any PNG decoder — and therefore any PDF renderer — can display it. The remaining frames live in APNG-specific chunks (acTL, fcTL, fdAT) that PDF tooling ignores. If you need motion, export to video with APNG to MP4.
How do I control which APNG becomes which page?
Page order follows the order of the file tiles after upload. Drag a tile up or down to move it — the top tile is page 1. If you uploaded the files in the wrong sequence, you don't need to re-upload; just rearrange the tiles, then click Merge. Each APNG occupies exactly one page in "Single PDF" mode.
Does APNG transparency survive the merge?
Yes, when Image Transparency is left on "Unchanged" (the default). APNG carries a full 8-bit alpha channel, so semi-transparent and anti-aliased edges are preserved, and transparent regions show whatever sits behind the page in your PDF viewer. Switch to "Removed" to bake in a white background — recommended for printing and for PDF/A archival workflows, where a flat opaque page is expected.
Can I keep each APNG at its original dimensions instead of fitting A4?
Yes. Open the Paper size dropdown and choose "Original" (labeled "Same as image size"). Each page is then sized to the source APNG's exact pixel dimensions instead of A4, which avoids upscaling small sprite frames or shrinking large ones. Combine it with "No margin" and "Cover" placement for a full-bleed, frame-perfect result.
How many APNG files can I merge into one PDF, and is it private?
There is no fixed per-file count cap on the number of APNGs you combine; the real constraint is total upload size and time, so very large batches of high-resolution frames take longer to upload than a handful of small icons. In our testing, two dozen sprite-sheet APNGs (under 300 KB each) merged into a single A4 PDF in a few seconds. Every file is sent over a TLS-encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, and files are never shared or made public.