animation

Check whether a file is a valid PNG, whether it's animated, and report its frame count, loop count, and timing.

Combine several same-size PNG frames into a real Animated PNG (APNG), entirely in your browser.

Decode an Animated PNG into its individual frames, each downloadable as its own still PNG.

Change how many times an Animated PNG repeats (or make it loop forever) without re-encoding a single frame.

Play back an Animated PNG frame-by-frame in your browser, honoring its real timing and loop count.

Flip an Animated PNG's frame order so it plays backward, keeping each frame's original delay.

Speed up or slow down an Animated PNG's playback by any multiplier from 0.1x to 10x.

Plays an APNG's frames on a canvas and records them into a real video file — since no browser can encode true AVI, this honestly downloads WebM instead.

Play back an APNG's frames on a canvas and record them into an MP4 (or WebM fallback) video, entirely in your browser.

Plays an APNG's frames on a canvas and records them into a real video file — since no browser can encode true WMV, this honestly downloads WebM instead.

Attempts to sample frames from an uploaded AVI and stitch them into an APNG — most browsers have no built-in AVI decoder, so this will honestly fail for most files.

Turn an uploaded PNG into a real animated APNG where it dissolves away pixel by pixel.

Sample evenly-spaced frames from an MP4 video and stitch them into a real Animated PNG (APNG), right in your browser.

Turn an uploaded PNG into a real animated APNG that fades in from transparent to fully visible.

Turn an uploaded PNG into a real animated APNG that fades out from fully visible to transparent.

Combine multiple uploaded PNGs into a single looping animated APNG slideshow.

Turn an uploaded PNG into a real animated APNG that scrolls horizontally or vertically and loops seamlessly.

Attempts to sample frames from an uploaded WMV and stitch them into an APNG — no mainstream browser has a built-in WMV decoder, so this will almost always fail honestly.