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Supports: AVIF
AVIF is superb at making a photo small, and awkward at getting that photo to another person. Native decoding only arrived in Chrome 85, Firefox 93, Safari 16.4 (iOS 16.0) and Edge 121, so an AVIF attachment still breaks in plenty of mail clients, ticketing systems, print shops and document portals. A PDF sidesteps all of it: fixed page geometry, an opaque page, and a viewer on every desktop and phone. Drop in one AVIF for a single-page document, or a dozen for a multi-page one. 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 or made public.
.avif files onto the page or click "+ Add Files". Upload order is page order, so add them in the sequence you want them bound.The most-used presets in the Paper size dropdown, with the page each one produces. Dimensions are in inches; the converter lays the decoded image inside that rectangle, minus the margin you pick.
| Paper size preset | Page size (in) | Typical use |
|---|---|---|
| Original | Matches the image | Borderless pages, screenshots, artwork proofs |
| A4 (default) | 8.27 × 11.69 | The ISO office/print default outside North America |
| Letter | 8.5 × 11 | The North American office/print default |
| Legal | 8.5 × 14 | Contracts and long-form forms |
| Executive | 7.25 × 10.5 | Compact business documents |
| A3 | 11.69 × 16.53 | Posters, plots, double-page spreads |
| Tabloid / Ledger | 11 × 17 / 17 × 11 | Large portrait / large landscape sheets |
| Arch A / Arch B | 9 × 12 / 12 × 18 | US architectural drawing sizes |
| ISO B5 / ISO B4 | 6.93 × 9.85 / 9.85 × 13.9 | Books, booklets, European stationery |
The Margin presets are No margin (0"), Narrow (0.5" all round), Moderate (0.75" sides, 1" top and bottom), Normal (1" all round) and Large (2" sides, 1" top and bottom).
| If you want… | Set this |
|---|---|
| A print-ready page with room for a binder or staple | Paper size A4 or Letter, Margin Normal (1") |
| The page to follow the photo's own shape, no white border | Paper size Original, Margin No margin (0") |
| The image to fill the whole sheet, edges allowed to crop | Image placement Cover |
| The whole image visible with white space around it | Image placement Contained (default) |
| A wide landscape photo on a full sheet | Page layout Landscape |
| The image pinned to the top of the page, caption space below | Image alignment Top |
| One combined document from a folder of AVIFs | Combine Single PDF |
| The smallest PDF you can email | Image Quality 40-60%, Margin Narrow |
A little, by default. A PDF page cannot hold an AVIF-coded image, so the converter decodes your file and re-encodes it as a JPEG at the Image Quality (%) value — 75 unless you change it — before placing it on the page. At 90-100% the difference is invisible for ordinary photos; below about 60% you will start to see JPEG artefacts in flat gradients and around hard edges. Page geometry (paper size, margins, alignment) never touches the pixels; it only decides where they sit.
No — transparent areas come out white. AVIF can carry an alpha channel, but the intermediate JPEG cannot, so alpha is matted onto a white background before the image reaches the page. The Image Transparency control on the page (Unchanged / Removed) only changes behaviour for PNG sources, so for an AVIF the result is the same either way. If you need the alpha channel to survive, convert to AVIF to PNG instead and place that file yourself.
Yes. Add as many .avif files as you like, leave Combine? on Single PDF, and each image becomes one page in upload order. Switch to Individual PDFs to get a separate document per image instead. If you are starting from a mixed folder of image types rather than AVIF alone, Merge Image to PDF accepts JPG, PNG, TIFF, HEIC, RAW and more in the same job.
Choose a fixed size — A4 or Letter — when the PDF will be printed or filed, because printers and document systems expect a standard sheet. Choose Original when the PDF is only going to be read on screen and you do not want white bands around a photo: the page is built to the image's own proportions, so nothing is letterboxed.
Contained scales the image until the whole thing fits inside the printable area, leaving white space on the two sides where the aspect ratios disagree — nothing is cut off. Cover scales it until the printable area is completely filled, which means the overhanging edges are cropped away. Contained is the default and the safe choice for documents; Cover is for full-bleed, poster-style pages where losing a strip of sky does not matter.
Because AVIF's AV1 encoder is far more efficient than the JPEG encoding a PDF page uses, and because the PDF adds its own structure on top. A 300 KB AVIF can easily land in a PDF of a megabyte or more. Lowering Image Quality (%) is the first lever; scaling the image down before conversion is the second. If the finished document is still too big to send, run it through Compress PDF.
You can extract the embedded JPEG with most PDF tools, but it will be the re-encoded copy, not your original AVIF — a PDF is a delivery format, not an archive of the source file. Keep the .avif if you may need to re-edit later, or make an editing master first with AVIF to TIFF and set its Compression Type to LZW or Deflate so nothing is re-compressed lossily.
There is no fixed page count, and AVIF files are usually tiny, so a long batch is normally limited by how long the upload takes rather than by the images themselves. Very high-resolution scans over a slow connection are the case to watch. Everything is processed on our servers and removed automatically after a few hours, with no sign-up and no watermark.