Convert PEF to APNG Online

Convert PEF to APNG: What This Tutorial Covers

This walks you through turning one or more Pentax PEF RAW photos into a single animated APNG, where each PEF becomes a frame played in upload order — useful for timelapses, bracketed sequences, or a short loop built from a burst. PEF is Pentax's proprietary RAW format, so each file is demosaiced and rendered to a standard 8-bit sRGB frame before it is assembled into the animation.

How to Convert PEF to APNG

1. Upload Your PEF Files: Drag and drop or click "Upload" to add your .pef images. Add them in the order you want them animated — the sequence on the page is the playback order. Upload a single PEF and you will get a one-frame APNG (effectively a static PNG).
2. Set the Framerate: Open the options and pick a value under Framerate. The default is 10 FPS (Recommended); raise it for smoother motion, or drop to 2-5 FPS for a slideshow feel.
3. Tune Image quality (%) and Colors: Adjust Image quality (%) to balance sharpness against file size, optionally reduce Colors to shrink the output, and scale every frame to one size with Image resolution (preset, percentage, or keep original).
4. Convert and Download: Click Convert, then download your APNG. Files upload over an encrypted connection, are processed on our servers, and are deleted automatically after a few hours — no sign-up, no watermark.

Walk-through: Turning PEF RAW Shots Into Frames

PEF is not a finished picture — it is unprocessed sensor data based on the TIFF container, holding the raw red/green/blue values straight off a Pentax sensor. Before anything can animate, each PEF is demosaiced (the color-filter mosaic is interpolated into full RGB) and rendered to an 8-bit sRGB frame. That rendered frame is what lands in the APNG, so the animation is a faithful preview of your shots rather than the editable RAW itself.

Order matters more than any other setting. The converter reads your PEFs top-to-bottom as they appear in the upload list, so a reversed or shuffled list produces a reversed or shuffled animation. A few patterns that come up often:

• For a smooth timelapse, keep every frame and raise the Framerate (15-30 FPS); for a stop-motion or slideshow look, lower it to 2-5 FPS instead of duplicating frames.
• If the output looks too large, reduce Colors (APNG supports full 24-bit color, but trimming to 64-128 helps flat or graphic frames) and lower Image quality (%) before touching resolution.
• If frames are different sizes, set one Image resolution preset so every PEF is scaled to the same canvas — APNG plays best when all frames share one dimension.
• If you only need one still, convert the single PEF with PEF to PNG or PEF to JPG instead of building a one-frame animation.

Common Errors and How to Fix Them

• "Animation only shows one image" — A browser without APNG support displays just the first frame as a static PNG. The file is fine; view it in Chrome 59+, Firefox 3+, Safari 8+, or Edge 79+ to see the motion.
• "Colors look flat or different from my RAW edit" — PEF carries unedited sensor data; the converter applies a neutral default render, not your camera or Lightroom adjustments. Edit the PEFs in RAW software and export to PNG/TIFF first if you need a specific look.
• "Output file is too large to share" — RAW frames are detailed and high-resolution, so many large frames balloon the APNG. Lower Colors, drop Image quality (%), reduce the Image resolution preset, or use fewer frames at a slower Framerate.
• "My PEF won't open or convert" — PEF varies by camera model and some files from newer bodies need updated decoders. Re-export the shot to DNG or TIFF from your Pentax software, then convert that instead.
• "Frames are in the wrong order" — Re-upload the PEFs in the intended sequence; the page order is the playback order.

When This Doesn't Work

A single PEF produces a single-frame APNG — there is nothing to animate, so use a still-image converter such as PEF to PNG instead. Corrupted or partially-written RAW files may fail to decode and should be re-exported from your Pentax application or a RAW editor. And if you need the absolute widest playback across very old software, an animated GIF still has broader legacy reach than APNG; in that case convert PEF to GIF and accept GIF's 256-color limit.

Frequently Asked Questions

Can I combine multiple PEF files into one animated APNG?

Yes — that is the core of this tool. Upload several PEF photos and they are stitched into a single APNG, each file becoming one frame in the order you arranged them. It is ideal for a timelapse, a bracketed set, or a burst sequence. A single PEF simply yields a one-frame (static) APNG.

Will the APNG match the quality of my PEF RAW?

The APNG holds a rendered 8-bit sRGB version of each PEF, not the raw sensor data, so it cannot carry the full editing latitude of RAW. That said, APNG uses lossless PNG-style compression with full 24-bit color and 8-bit alpha. In our testing, keeping Image quality (%) high and leaving the original color palette produced frames visually indistinguishable from a standard JPEG export of the same PEF, at a much smaller, web-ready size than the RAW originals.

Why do my converted frames look flatter than in my RAW editor?

PEF stores unprocessed sensor data, so the converter applies a neutral default demosaic and render rather than your camera profile or Lightroom edits. If you need a specific look — contrast, white balance, highlight recovery — edit the PEFs in RAW software, export to PNG or TIFF, and build the animation from those.

Does APNG keep transparency, and will my PEF have any?

APNG preserves 8-bit (256-level) transparency, far smoother than GIF's single on/off transparent color. Camera RAW files like PEF are fully opaque photographs, so there is no alpha to keep; transparency matters here only if you later swap in frames that have an alpha channel.

What happens in a browser that doesn't support APNG?

It falls back to the first frame, shown as an ordinary static PNG, because an APNG's first frame is a valid PNG stream. Roughly 94.7% of browsers in use today render the full animation, including current Chrome, Firefox, Safari, and Edge.

Should I use APNG or GIF for a sequence of Pentax photos?

Choose APNG for photographic frames — it keeps full 24-bit color and lossless detail, which matters for the gradients and skin tones in real photos that GIF's 256-color palette would band. Choose GIF only when you need the widest compatibility with very old software; for that route, convert PEF to GIF.