Convert FLV to APNG Online
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Supports: FLV
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Need help?Convert FLV to APNG Online
Pull a short clip out of a legacy FLV (Flash Video) file and turn it into an animated PNG that plays in any modern browser. APNG keeps full 24-bit color and 8-bit alpha transparency — so logos, UI captures, and detailed motion stay sharp with no 256-color banding the way a GIF would force. You choose the frame rate, image quality, and output size; the file is uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours. No sign-up, no watermark.
How to Convert FLV to APNG
- Upload Your FLV File: Drag and drop the .flv onto the page or click "Add Files" to pick it. You can queue several FLV files and convert them in one batch.
- Set the Framerate: Open the FRAMERATE dropdown and choose your frames per second — 10 FPS (Recommended) is a good balance of smoothness and file size; raise it for fast motion, lower it to shrink the result.
- Tune Image Quality, Resolution, and Colors (Optional): Use Image quality (%) to trade size against fidelity, set a Resolution Percentage or preset width/height to scale down (aspect ratio is kept), and leave Colors on ORIGINAL for full color or switch to By Color Reduction + Dither for a smaller palette.
- Convert and Download: Click Convert and save the finished .apng. No sign-up, no watermark.
APNG vs GIF vs WebP for Animation
| Property | APNG | GIF | Animated WebP |
|---|---|---|---|
| Color depth | 24-bit (millions) | 256 colors max | 24-bit (millions) |
| Transparency | Full 8-bit alpha | 1-bit (on/off only) | Full alpha |
| Compression | Lossless | Lossless, 256-color | Lossy or lossless |
| Typical file size | Larger than GIF | Largest at equal quality | Smallest of the three |
| Standardized | W3C PNG 3.0 (June 2025) | W3C / CompuServe | Google (VP8/VP8L) |
| Browser support | ~95% (no IE) | Universal | ~96% (no IE) |
| Best for | Lossless logos, gradients, alpha | Maximum reach, simple loops | Smallest web download |
Frequently Asked Questions
Why convert an FLV file at all in 2026?
Adobe ended support for Flash Player on December 31, 2020, and browsers blocked Flash content the following month. FLV is a Flash-era container, so old clips are stranded in a format modern browsers, phones, and editors no longer open cleanly. Pulling the motion out into APNG (or GIF/MP4) gives you a file that plays everywhere without a Flash plugin.
Will the APNG be larger than the original FLV?
Often yes for longer clips. APNG is lossless and stores every frame as full-color pixel data, while FLV used inter-frame video compression (typically H.263/Sorenson or VP6). APNG suits short loops — a few seconds of a logo, icon, or UI animation — not minute-long video. For longer footage, convert to MP4 instead and keep APNG for short, lossless animations.
Should I use APNG or GIF for this clip?
Choose APNG when the clip has smooth gradients, semi-transparent edges, or fine color detail that GIF's 256-color palette and on/off transparency would wreck. Choose GIF when you need the broadest possible compatibility — including older chat apps and email clients — and the source is already simple and low-color, where the size penalty of GIF is small.
Will APNG actually animate, or just show one frame?
It animates in roughly 95% of browsers in use — Chrome 59+, Firefox 3+, Safari 8+, Edge 79+, and Opera 46+. APNG was formally standardized in the W3C PNG 3.0 specification in June 2025. In a browser or viewer that doesn't support it (notably Internet Explorer), an APNG cleanly falls back to displaying its first frame as a normal static PNG, so nothing breaks.
What do the framerate and quality settings actually change?
FRAMERATE controls how many frames per second are sampled from the FLV — higher looks smoother but adds frames and bytes. Image quality (%) and the Colors option control per-frame data: ORIGINAL colors keep full fidelity, while By Color Reduction + Dither shrinks the palette to cut size. In our testing, a 5-second 480p clip at 10 FPS with ORIGINAL colors produces a noticeably smaller APNG than the same clip at 30 FPS, because frame count is usually the biggest lever on APNG size.
How small can I make the APNG without it looking bad?
The cheapest savings come from lowering the framerate and scaling the resolution down with Resolution Percentage before you touch colors. Our pipeline finishes every APNG with apngopt and Zopfli compression, so the output is already byte-optimized for whatever settings you pick. If it's still too large, drop to 8 or 10 FPS, halve the resolution, or trim the clip to the few seconds you actually need. You can also re-run a finished file through compress APNG.
Is my file kept private?
Yes. Your FLV is uploaded over a TLS-encrypted connection, converted on our servers, and deleted automatically after a few hours. Files are never shared, made public, or used for anything but your conversion, and there's no sign-up or watermark.