If a GIF moves before conversion but the downloaded copy stays still, check whether the conversion preserved an animation or exported one picture. A different file extension and a successful download do not establish that its frames and timing survived.
Keep the original GIF. This guide uses the Image Format Converter to inspect a still-image export, then separates that task from preserving a moving sequence.
Check the original before changing export settings
Open the original in a viewer that plays animated GIFs. Watch long enough to see its intended changes, and check whether it repeats. If one viewer shows only a picture, inspect the file in an animation editor before deciding that the source has no animation.
For a controlled comparison, use a simple two-frame practice file: a blue frame followed by an orange frame, both 160 × 100 pixels, held for 700 milliseconds each and set to repeat. That makes a missing second frame easier to notice than a subtle blink in a large photograph.
Record what you need to retain: both colors, their order, the timing and the repeat behavior. Dimensions alone are insufficient because a single 160 × 100 image can have exactly the same dimensions as the moving source.
Understand why this conversion produces a still
The current converter loads an image, draws it once onto a browser canvas and exports that canvas. It does not offer frame selection, a timeline, frame delays or an animation export control.
The HTML standard for canvas image sources specifies the default image of an animated image element, or its first frame when the format has no default image, as the source for 2D canvas drawing. This differs from recording the sequence over time.
MDN describes canvas toBlob export as a file representing the image contained in the canvas. In this tool, raising a quality slider changes an encoding setting for supported lossy outputs; it does not add the missing frames or their durations.
Compare PNG and WebP copies in the on-site tool
- Open the converter and select the original GIF under Choose an image to convert. The current file limit is 20 MB.
- Check the loaded source format and dimensions. For the practice file, expect GIF and 160 × 100 pixels.
- Choose PNG under Convert to, rather than leaving an automatically selected target unchanged.
- Select Convert image. Inspect New format and the result preview, then select Download converted.
- Open the saved PNG separately. Compare its visible content with the first source frame and confirm that it is a still.
- If WebP encoding is available, select WebP, leave quality at 85, convert again and download a separate copy. Check its reported format and playback too.
For a GIF source, the converter displays a note that only its first frame is converted. Its preview is useful for checking that picture, not for approving preservation of the original sequence.
WebP can store animations, as explained in MDN’s image format guide. That format capability does not make this converter an animated WebP encoder. Its single canvas export still has no frame sequence. Likewise, choosing PNG here does not request an APNG animation.
Choose between a moving asset and a poster image
If the movement conveys instructions or a change of state, return to the original animation. Use an editor or encoder that explicitly imports and exports animated frames. Check its exported frame order, duration, repeat behavior and any transparent areas before accepting the result.
If you only need a poster image, a still export can be intentional. Check whether the default or first frame is useful on its own. This converter does not let you select a later frame; choose the desired frame in an animation editor before using a still-image workflow.
Converting a still PNG back into a GIF cannot restore the missing sequence. The same source-information principle applies to our guide on why JPEG-to-PNG conversion does not recover lost detail.
Check the file delivered on the website
Keep animation-preserving exports and poster images under distinct filenames. After uploading, open the actual image URL and compare its playback with the original. Then inspect the image in its final page placement.
If the direct asset moves but the page displays a still, check which source file the page actually uses and whether the CMS produced a different derivative. If the downloaded asset is already a still, return to the conversion step instead of changing a playback setting on the page.
For still assets that also need fewer bytes, follow the website image compression workflow. Judge animation preservation separately from dimensions, file size and visual quality so a smaller download does not conceal lost instructions.