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.webp

WebP Image

Images

WebP supports lossy/lossless coding, alpha and animation. A .webp file may be animated; inspect frames before choosing an export format.

What it is used for
Web still images, transparency and animation
What the file contains
Binary data
All sections, questions and sources

Content reviewed： · Editor：Kai

First: choose for your purpose

WebP supports lossy/lossless coding, alpha and animation. Before making PNG/JPEG for a recipient rejecting WebP, identify whether the source is static or animated.

Opening steps

Choose your environment or purpose to see its steps.

Windows / macOS: view in a browser

Browser display does not imply support in other apps.

  1. Open the saved WebP in an updated browser.
  2. Inspect alpha, animation and dimensions and check recipient format rules.
  3. Use a properly exported copy for an unsupported app; renaming is not conversion.
Desktop: convert using GIMP

Inspect alpha/animation first.

  1. Open a copy in GIMP and inspect layers/background.
  2. Choose PNG for alpha or JPEG for a static photo; select frames deliberately for animated sources.
  3. Export separately and compare background, text and source details.
Mobile: inspect after saving/sharing

Photo-library handling varies by environment.

  1. Save the original and open in a supporting viewer/browser.
  2. Do not infer corruption from absence in Photos; inspect it as a file.
  3. Export the recipient’s required format and inspect the received image.

Menu labels and support vary by app, OS and version. Preserve the original before making changes.

Troubleshooting by symptom

  • If an older app rejects it, inspect it in a supported browser before converting.
  • Only the first frame after PNG export indicates an animated source; choose a workflow that handles all frames.
  • Cannot insert into Office: check version/format support and export a static PNG/JPEG copy.
  • Motion stops after conversion: a still export may include only one frame; decide whether animation is required.
  • Background turns white/black: JPEG may flatten alpha; inspect PNG export/background settings.

WebP → PNG / JPEG

  1. In GIMP, use File → Open and inspect alpha and layers/frames.
  2. Use File → Export As, choose PNG or JPEG, then inspect the exported background and intended frame.
  3. Compare motion/static content, background, dimensions, text edges and size.

JPEG loses alpha; a still PNG loses animation. PNG does not restore detail lost in lossy WebP.

Lossless, lossy and animated WebP

The suffix does not establish lossless coding. GIMP WebP export offers lossless, quality and animation options.

Lossless output does not restore earlier JPEG/lossy-WebP losses; retain the editing master.

Source for these steps：GIMP · Export Image as WebP / Google · WebP Container Specification

Preparing web images for submission

Check format, size, dimensions and background requirements and whether a still image suffices.

Inspect fine text/logos at 100% and review reuse rights and metadata before sharing.

Related-format differences

Related-format differences
Format / choicePurpose and preserved information
WebPLossless/lossy/alpha/animation; inspect the actual variant.
JPEGStatic photo copy without alpha/motion.
PNGStill alpha/text delivery, not recovery of prior losses.

Handling and security

A saved web filename does not prove the contents. Use an updated editor.

Questions and answers

Is WebP video?

It is an image format that can also contain animation.

Can I rename it to .jpg?

No. The data remains WebP; export JPEG through a compatible editor.

What output preserves transparent WebP?

For stills choose an alpha-capable format such as PNG; handle animation separately.

Does renaming WebP to JPG make it usable in Office?

No pixel encoding change occurs; export JPEG properly.

Is all WebP animated?

No; inspect the content in a browser/editor.

Format facts: name, steward and MIME type
Formal name
WebP
Steward / specification
Google
MIME type
image/webp

Primary and official sources

  • Official documentationWebP Container Specification

    Defines the WebP container, alpha and animation.

    Google · Link checked：
  • Software documentationExport File

    Documents choosing an output format through File → Export As in GIMP.

    GIMP · Link checked：
  • Software documentationExport Image as WebP

    Documents WebP alpha, animation and metadata export options.

    GIMP · Link checked：